Cited by 5Neuroendocrine Tumor Research AdvancesPancreatic function and diabetesDiabetes and associated disorders

An Uncommon Cause of Recurrent Presyncope, Dizziness, and Tachycardia: A Case Report of Diffuse, Adult-Onset Nesidioblastosis/Non-Insulinoma Pancreatogenous Hypoglycemia Syndrome (NIPHS)

Open access
Dieterle, Martin Philipp, Husari, Ayman, Prozmann, Sophie Nicole, Wiethoff, Hendrik, Stenzinger, Albrecht, Röhrich, Manuel, Pfeiffer, Uwe, Kießling, Wolfgang Rüdiger +6 more·2023·Biomedicines

Abstract

Neurovegetative and autonomic symptoms are common presentations of various diseases, ranging from psychosomatic to severe organic disorders. A 23-year-old man presented with a history of recurrent presyncope, dizziness, and tachycardia. Repeated diagnostic work-up in various clinical settings could not identify any definite cause for approximately eight years. However, the incidental detection of postprandial and exercise-induced hypoglycemia was suggestive of an insulin-related disorder. A 72 h plasma glucose fasting test revealed endogenous hyperinsulinism. Upon imaging studies, no tumor mass potentially indicating insulinoma could be detected. 68Ga-DOTA-Exendin-4 PET/CT showed diffuse tracer enrichment throughout the whole pancreas. A subtotal pancreatectomy was performed, and the diagnosis of diffuse, adult-onset nesidioblastosis was established histopathologically. This corresponds to the clinical findings of a functional β-cell disorder, also known as non-insulinoma pancreatogenous hypoglycemia syndrome (NIPHS). After nine months, the symptoms recurred, making complete pancreatectomy necessary. Postoperative laboratory evaluation exhibited no residual endogenous C-peptide production. This case illustrates the diagnostic challenges in patients presenting with unspecific, neurovegetative and autonomic symptoms with a severe and rare underlying cause.

AI snapshot

Written from the paper’s full text.

TL;DR

A 23-year-old man with an eight-year history of recurrent presyncope, dizziness, and supraventricular tachycardia was ultimately diagnosed with diffuse, adult-onset nesidioblastosis/NIPHS after incidental self-measured postprandial and exercise-induced hypoglycemia prompted endocrine work-up. Subtotal pancreatectomy provided only temporary relief, and complete pancreatectomy was required nine months later.

Key findings

  • The patient's symptoms began eight years before diagnosis with severe supraventricular tachycardia several times daily, accompanied by presyncope, dizziness, blurred vision, nausea, and other symptoms; repeated work-up across multiple specialties was inconspicuous except for inappropriate sinus tachycardia and other minor findings.
  • Self-measured postprandial glucose was reproducibly 40–70 mg/dL (HbA1c 5.1%, 32.2 mmol/mol); a 4 h OGTT showed symptomatic declines at 60 min (78 mg/dL) and 210 min (50 mg/dL), and a 72 h fasting test showed persistent C-peptide >0.2 nmol/L and insulin >21 pmol/L with glucose 48–57 mg/dL.
  • 68Ga-DOTA-Exendin-4 PET/CT showed diffuse tracer enrichment throughout the whole pancreas with no focal lesion; after subtotal pancreatectomy, recurrence at nine months showed residual pancreatic head uptake with SUVmax 10.26.
  • Histopathology after both surgeries confirmed diffuse adult-onset nesidioblastosis (enlarged islets, hyperchromatic nuclei, physiological distribution of insulin/glucagon/somatostatin cells, Ki-67 <1%); two years postoperatively C-peptide was <0.1 ng/mL, confirming complete removal of endocrine pancreatic tissue.

Methods

Single case report of one 23-year-old male patient, with clinical history, laboratory testing (4 h OGTT, 72 h fasting plasma glucose test, autoantibody and hormonal screening), imaging (contrast-enhanced MRI, 68Ga-DOTA-Exendin-4 PET/CT), surgical intervention (subtotal left-sided spleen-preserving pancreatectomy, then complete pancreatectomy via classical Whipple procedure), and histopathological/immunohistochemical examination of surgical specimens. The paper also proposes a diagnostic algorithm for spontaneous hypoglycemia in adults and reviews treatment options; a companion literature review is described as submitted separately.

Limitations

The paper states no formal limitations section; it notes that mechanistic data on adult-onset NIPHS is scarce, that there is no established hypothesis to explain morphological differences between patients or to correlate morphology with clinical presentation, and that the extent of pancreatic resection in NIPHS remains controversial. Evident from the text: this is a single case (n=1), so findings are not generalizable; some OGTT values were not determined, and the significance of the patient's childhood glucose of 36 mg/dL was unclear because the preanalytical process could not be reconstructed; SACS was not performed.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.3390/biomedicines11061741

Cites

74 of 74 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

46 of 88 cited sources checked · 15 supported · 0 flagged · accuracy not yet measured

  • Interpretationreasoning
    § 1. Introduction · p. 2

    This symptom finally led to the correct diagnosis of a functional β-cell disorder, also known as diffuse adult-onset nesidioblastosis or NIPHS.

    “This symptom finally led to the correct diagnosis of a functional β -cell disorder, also known as diffuse adult-onset nesidioblastosis or non-insulinoma pancreatogenous hypoglycemia syndrome (NIPHS) [4-6].”
    Quote in the paperSubstantial claim1 of 3 sources checked
    • cites [4] Geraghty, 2008, Hypoglycaemia in an Adult Male: A Surprising Finding in Pursuit of Insulinoma, Surgeon source
    • cites [5] Qintar, 2012, Hypoglycemia Due to an Adult-Onset Nesidioblastosis, a Diagnostic and Management Dilemma, Avicenna J. Med. source
    • cites [6] Jabri, 2004, Nesidioblastosis Associated with Hyperinsulinemic Hypoglycemia in Adults: Review of the Literature, Eur. J. Intern. Med. source
  • Premisecitation
    § 1. Introduction · p. 2

    If clinical findings are suggestive of insulinoma but no tumor can be localized upon conventional imaging, rarer causes of recurrent spontaneous hypoglycemia in the adult patient must be considered: insulin autoimmune syndrome, also known as Hirata's disease, as well as functional β-cell disorders.

    “If clinical findings are suggestive of insulinoma but no tumor can be localized upon conventional imaging, rarer causes of recurrent spontaneous hypoglycemia in the adult patient must be considered: insulin autoimmune syndrome, also known as Hirata's disease, as well as functional β -cell disorders [14,15].”
    Quote in the paperSubstantial claim2 of 2 sources checked
    • cites [14] Cappellani, 2020, Insulin Autoimmune Syndrome (Hirata Disease): A Comprehensive Review Fifty Years after Its First Description, Diabetes, Metab. Syndr. Obes. Targets Ther. source
    • cites [15] Tsujino, 2005, Noninsulinoma Pancreatogenous Hypoglycemia Syndrome: A Rare Case of Adult-Onset Nesidioblastosis, Intern. Med. source

      Split into 2 atoms — 1 confirmed, 1 partially supported, 0 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

      Experimental — accuracy not yet measured
  • Interpretationcitation
    § 2. The Case · p. 4

    These findings are compatible with NIPHS/nesidioblastosis according to the diagnostic criteria described above.

    “In conclusion, these findings are compatible with NIPHS/nesidioblastosis according to the diagnostic criteria described above (Figure 1) [14,15].”
    Quote in the paperSubstantial claim2 of 2 sources checked
    • cites [14] Cappellani, 2020, Insulin Autoimmune Syndrome (Hirata Disease): A Comprehensive Review Fifty Years after Its First Description, Diabetes, Metab. Syndr. Obes. Targets Ther. source
    • cites [15] Tsujino, 2005, Noninsulinoma Pancreatogenous Hypoglycemia Syndrome: A Rare Case of Adult-Onset Nesidioblastosis, Intern. Med. source
  • Premisecitation
    § Diagnostic Algorithm in Hypoglycemia · p. 10

    Surgical procedures on the pancreas, especially total pancreatectomy, are associated with a considerable risk of morbidity and mortality.

    “Of note, surgical procedures on the pancreas, especially total pancreatectomy, are associated with a considerable risk of morbidity and mortality [33,66-68].”
    • Also stated in: § References · p. 11 · plain
      “This is, however, accompanied by a considerable risk of morbidity and mortality, as illustrated by the presented case.”
    Quote in the paperSubstantial claim4 of 4 sources checked
    • cites [33] Barbier, 2013, Impact of Total Pancreatectomy: Short- and Long-Term Assessment, Hpb source

      The Post-operative course section reports 45% morbidity and 3.6% postoperative mortality among 56 patients who underwent total pancreatectomy, supporting the claim for that procedure. The study does not establish the risk for pancreatic surgical procedures more broadly. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
    • cites [66] Suzuki, 2017, The Clinical Outcomes after Total Pancreatectomy, Dig. Surg. source
    • cites [67] Karagianni, 2012, Nutritional Status and Nutritional Support Before and After Pancreatectomy for Pancreatic Cancer and Chronic Pancreatitis, Indian J. Surg. Oncol. source

      The Surgical Treatment of Chronic Pancreatitis section describes postoperative complications and operative morbidity, while the Enteral Nutrition section reports morbidity and mortality outcomes in patients undergoing upper gastrointestinal cancer surgery. The paper also describes serious consequences of total pancreatectomy, but the passages do not establish that its surgical morbidity or mortality risk is especially high relative to other pancreatic procedures. Page numbers were not available in our copy. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
    • cites [68] Furbetta, N., Comandatore, A., Gianardi, D., Palmeri, M., Di Franco, G., Guadagni, S., Caprili, G., Bianchini, M., Fatucchi, L.M., and Picchi, M. (2021). Perioperative Nutritional Aspects in Total Pancreatectomy: A Comprehensive Review of the Literature. Nutrients, 13. source

      The Introduction describes total pancreatectomy as highly invasive, and Section 4.3 explicitly associates it with postoperative morbidity. The passages found do not establish a considerable risk of mortality from the procedure; the broader claim about pancreatic surgery is also less directly addressed. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
  • Premisecitation
    § 3. Discussion 3. Discussion · p. 8

    Because somatostatin analogues also inhibit glucagon secretion, symptoms of hypoglycemia may occur even more frequently in a subset of NIPHS patients.

    “Since these substances also inhibit the secretion of glucagon, symptoms of hypoglycemia may occur even more frequently in a subset of patients [52,61,62].”
    Quote in the paperNot a substantial claim3 of 3 sources checked
    • cites [52] Koneshamoorthy, 2022, Case Report: Hypoglycemia Due to a Novel Activating Glucokinase Variant in an Adult—A Molecular Approach, Front. Endocrinol. source

      The Clinical Case section reports that octreotide did not improve one patient’s hypoglycemia, while pasireotide improved it. Searches for glucagon inhibition and worsening hypoglycemia found no passage linking somatostatin analogues to more frequent hypoglycemia in a subset of patients. The copy also does not identify the patient as having NIPHS. (LLM, conf=0.76)

      Experimental — accuracy not yet measured
    • cites [61] Dauriz, 2018, A Case Report of Insulinoma Relapse on Background Nesidioblastosis: A Rare Cause of Adult Hypoglycemia, J. Clin. Endocrinol. Metab. source

      The Discussion says octreotide and lanreotide inhibit glucagon secretion, potentially impairing the response to hypoglycemia. It also says they may worsen the frequency of hypoglycemic episodes in insulinomas lacking SSTR2. That finding concerns a subset of insulinoma patients, not specifically a subset of patients with NIPHS. (LLM, conf=0.86)

      Experimental — accuracy not yet measured
    • cites [62] Schwetz, 2016, Successful Medical Treatment of Adult Nesidioblastosis with Pasireotide over 3 Years, Medicine source

      The Discussion (page unavailable) states that glucagon inhibition is mediated mainly by somatostatin receptor 2, supporting the claim that somatostatin analogues can inhibit glucagon secretion. It does not report more frequent hypoglycemic symptoms in a subset of NIPHS patients; instead, it describes avoidance of severe hypoglycemia with pasireotide. (LLM, conf=0.86)

      Experimental — accuracy not yet measured
  • Classified as probably not a substantial claim. 47
  • May combine two claims. 41
  • Classified as probably not a substantial claim.

    Premisecitation
    § 1. Introduction · p. 2

    Functional β-cell disorders are also known as adult-onset nesidioblastosis or non-insulinoma pancreatogenous hypoglycemia syndrome (NIPHS).

    “The latter are a group of diseases also known as adult-onset nesidioblastosis or non-insulinoma pancreatogenous hypoglycemia syndrome (NIPHS) [5,16-20].”
    Quote in the paperSubstantial claim3 of 6 sources checked
    • cites [5] Qintar, 2012, Hypoglycemia Due to an Adult-Onset Nesidioblastosis, a Diagnostic and Management Dilemma, Avicenna J. Med. source
    • cites [16] Pathak, 2014, An Unusual Cause of Hypoglycemia in a Middle-Aged Female after Bariatric Surgery, J. Community Hosp. Intern. Med. Perspect. source

      The Discussion describes NIPHS as hypoglycemia caused by pancreatic beta-cell hyperplasia, and the Abstract says the patient diagnosed with NIPHS had histology suggestive of nesidioblastosis. These passages connect the terms, but the paper does not say that functional β-cell disorders as a group are also known as adult-onset nesidioblastosis or NIPHS. (LLM, conf=0.81)

      Experimental — accuracy not yet measured
    • cites [17] Pia, 2017, The Treatment of Hyperinsulinemic Hypoglycaemia in Adults: An Update, J. Endocrinol. Investig. source
    • cites [18] Hannon, 2015, Amlodipine for the Medical Treatment of Adult-Onset Diffuse Nesidioblastosis, Pancreas source
    • cites [19] Martignoni, 2003, Nesidioblastosis with Glucagon-Reactive Islet Cell Hyperplasia: A Case Report, Pancreas source
    • cites [20] Gussinyer, 2002, Pancreatectomy Extension in Persistent Hyperinsulinaemic Hypoglycaemia: A New Strategy, Eur. J. Pediatr. Surg. source
  • Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing).

    Premisecitation
    § 1. Introduction · p. 2

    Genuine endocrine diseases, like pituitary or adrenal insufficiency, should also be considered especially if patients present with other symptoms suggestive of these diseases.

    “Genuine endocrine diseases, like pituitary or adrenal insufficiency, should also be considered especially if patients present with other symptoms suggestive of these diseases [11,12].”
    Quote in the paperNot a substantial claim2 of 2 sources checked
    • cites [11] Rizwan, 2023, Hypopituitarism Presenting as Recurrent Episodes of Hypoglycemia : Houssay Phenomenon, Cureus source
    • cites [12] Sakurai, 2023, Hypoglycemic Hemiplegia Associated with Reversible Narrowing of the Contralateral Middle Cerebral Artery in a Patient with Adrenal Insufficiency, Intern. Med. source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation
    § 1. Introduction · p. 2

    Apart from severe diseases like liver, kidney or heart failure, the intake of alcohol, insulin, or insulin secretagogues needs to be ruled out.

    “Apart from severe diseases like liver, kidney or heart failure, the intake of alcohol, insulin, or insulin secretagogues needs to be ruled out [7,9,10].”
    Quote in the paperNot a substantial claim2 of 3 sources checked
    • cites [7] Cryer, 2009, Evaluation and Management of Adult Hypoglycemic Disorders: An Endocrine Society Clinical Practice Guideline, J. Clin. Endocrinol. Metab. source
    • cites [9] Kittah, 2017, Pathogenesis and Management of Hypoglycemia, Eur. J. Endocrinol. source
    • cites [10] Oueslati, 2022, Prevalence and Characteristics of Factitious Hypoglycaemia in Non-Diabetic Patients in a Department of Endocrinology, Endocrinol. Diabetes Metab. source

      The Introduction (page unavailable) identifies intentional insulin use and oral hypoglycaemic agents as causes of factitious hypoglycaemia; the Discussion describes testing to distinguish insulin use from sulfonylurea ingestion. The Results also list alcohol intoxication as a cause of hypoglycaemia. The paper does not specify liver, kidney or heart failure, or state the full rule-out recommendation as written. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
  • Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing).

    Premisecitation
    § 1. Introduction · p. 2

    The differential diagnosis of hypoglycemia in adult patients can be challenging.

    “The differential diagnosis of hypoglycemia in adult patients can be challenging [7,8].”
    Quote in the paperNot a substantial claim2 of 2 sources checked
    • cites [7] Cryer, 2009, Evaluation and Management of Adult Hypoglycemic Disorders: An Endocrine Society Clinical Practice Guideline, J. Clin. Endocrinol. Metab. source
    • cites [8] Douillard, 2020, Rare Causes of Hypoglycemia in Adults, Ann. Endocrinol. source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation
    § 1. Introduction · p. 2

    The differential diagnosis of patients presenting with unspecific, neurovegetative and autonomic symptoms is complex and involves a variety of diseases, including psychosomatic, neurologic, cardiologic, and endocrine disorders.

    “The differential diagnosis of patients presenting with unspecific, neurovegetative and autonomic symptoms is complex and involves a variety of diseases, including psychosomatic, neurologic, cardiologic, and endocrine disorders [1,2].”
    Quote in the paperNot a substantial claim1 of 2 sources checked
    • cites [1] 2020, Syncope and Palpitations: A Review, Pediatr. Clin. N. Am. source
    • cites [2] Spiegel, 2017, Dizziness in the Emergency Department: An Update on Diagnosis, Swiss Med. Wkly. source

      The Aetiology section describes a diverse differential diagnosis for dizziness, including psychosomatic, central vascular, circulatory and hypoglycaemic causes. The paper addresses patients presenting with dizziness, however, not patients presenting with unspecific neurovegetative or autonomic symptoms generally; it also does not identify endocrine disorders as a broad diagnostic category. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation
    § 2. The Case · p. 5

    Diabetes type 3c is mainly characterized by an extraordinary insulin sensitivity, which can be explained in terms of the missing counterregulatory glucagon.

    “Diabetes type 3c is mainly characterized by an extraordinary insulin sensitivity, which can be explained in terms of the missing counterregulatory glucagon [32-36].”
    Quote in the paperNot a substantial claim2 of 5 sources checked
    • cites [32] Woodcock, 2019, Diabetes Care after Pancreatic Surgery, J. Diabetes Nurs.

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites [33] Barbier, 2013, Impact of Total Pancreatectomy: Short- and Long-Term Assessment, Hpb source

      The Discussion (page not available) says pancreatic diabetes involves a complete lack of endogenous insulin and glucagon, leading to frequent, severe hypoglycaemia. The Endocrine function section reports frequent hypoglycaemic episodes after total pancreatectomy. Neither passage describes extraordinary insulin sensitivity or establishes that missing counterregulatory glucagon explains such sensitivity. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
    • cites [34] Cavallo, 2019, Management of Total Pancreatectomy-Induced Diabetes Mellitus : A Mini-Review, Austin Pancreat Disord

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites [35] Zhao, 2023, Diabetes Management in Patients Undergoing Total Pancreatectomy: A Single Center Cohort Study, Front. Endocrinol. source

      The Discussion (page not available) reports lower insulin needs after total pancreatectomy than in comparable patients with type 1 diabetes and says these may reflect increased peripheral insulin sensitivity and deficient pancreatic-glucagon counterregulation. It also names malabsorption as a possible contributor. The source therefore supports the proposed link, but not the claim that extraordinary insulin sensitivity chiefly characterizes all type 3c diabetes or that missing glucagon alone explains it. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
    • cites [36] Suto, 2021, Diabetic Control and Nutritional Status up to 1 Year after Total Pancreatectomy: A Nationwide Multicentre Prospective Study, Br. J. Surg. source
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation
    § 3. Discussion 3. Discussion · p. 8

    SACS was the gold standard in the past to detect an insulin gradient in the vessels supplying the pancreas, and this invasive method might be almost completely replaced by PET imaging in the future, e.g., with 68Ga DOTA-Exendin-4 PET/CT.

    “While SACS was the gold standard in the past to detect an insulin gradient in the vessels supplying the pancreas, this invasive method might be almost completely replaced by PET imaging in the future, e.g., with 68 Ga DOTA-Exendin-4 PET/CT [38-41].”
    Quote in the paperNot a substantial claim2 of 4 sources checked
    • cites [38] Thompson, 2015, Selective Arterial Calcium Stimulation with Hepatic Venous Sampling Differentiates Insulinoma from Nesidioblastosis, J. Clin. Endocrinol. Metab. source

      The Discussion describes SACST as an invasive technique that measures an insulin rise after stimulation of pancreatic arterial distributions and reports high sensitivity for localizing occult insulinoma. It does not call SACST a past gold standard or predict its near-complete replacement by PET. Instead, the Discussion says emerging imaging techniques show promising early results but cannot yet distinguish occult insulinoma from diffuse nesidioblastosis. (LLM, conf=0.85)

      Experimental — accuracy not yet measured
    • cites [39] Rao, 2014, Successful Management of Refractory Noninsulinoma Pancreatogenous Hypoglycemia Syndrome With Gastric Bypass Reversal: A Case Report, Am. J. Gastroenterol. source
    • cites [40] Christ, 2020, Innovative Imaging of Insulinoma: The End of Sampling? A Review, Endocr. Relat. Cancer source

      The Introduction (page unavailable) describes SACST as an invasive test recommended when conventional imaging cannot localize an insulinoma; it samples hepatic venous blood for insulin to identify an arterial territory. The Conclusion (page unavailable) predicts that GLP-1R imaging could end the need for SACST. The review does not call SACST a past gold standard, and its recommendation is limited to cases not localized by conventional imaging. (LLM, conf=0.82)

      Experimental — accuracy not yet measured
    • cites [41] Antwi, 2018, Comparison of Glucagon-like Peptide-1 Receptor (GLP-1R) PET/CT, SPECT/CT and 3T MRI for the Localisation of Occult Insulinomas: Evaluation of Diagnostic Accuracy in a Prospective Crossover Imaging Study, Eur. J. Nucl. Med. Mol. Imaging source
  • May combine two claims.

    Premisecitation
    § 1. Introduction · p. 2

    Not all cases with histologically proven nesidioblastosis exhibit the same clinical pattern; some patients have a positive fasting test and also suffer from fasting or exercise-induced hypoglycemia.

    “However, not all cases with histologically proven nesidioblastosis exhibit the same clinical pattern. Some patients, e.g., have a positive fasting test and also suffer from fasting or exercise-induced hypoglycemia [18,28,29].”
    Quote in the paperSubstantial claim1 of 3 sources checked
    • cites [18] Hannon, 2015, Amlodipine for the Medical Treatment of Adult-Onset Diffuse Nesidioblastosis, Pancreas source
    • cites [28] Kaczirek, 2003, Nesidioblastosis in Adults: A Challenging Cause of Organic Hyperinsulinism, Eur. J. Clin. Investig. source
    • cites [29] Kim, 2016, Difficult Diagnosis and Localization of Focal Nesidioblastosis: Clinical Implications of 68Gallium-DOTAD-Phe1-Tyr3-Octreotide PET Scanning, Ann. Surg. Treat. Res. source
  • May combine two claims.

    Premisecitation
    § 3. Discussion 3. Discussion · p. 8

    Insulin secretion is reduced by somatostatin receptor type 2 and 5 signaling, while glucagon secretion is mainly inhibited by receptor type 2 signaling.

    “Insulin secretion is reduced by somatostatin receptor type 2 and 5 signaling, while glucagon secretion is mainly inhibited by receptor type 2 signaling.”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites [62] Schwetz, 2016, Successful Medical Treatment of Adult Nesidioblastosis with Pasireotide over 3 Years, Medicine source
  • May combine two claims.

    Premisecitation
    § 3. Discussion 3. Discussion · p. 8

    Exercise-induced or postprandial hyperinsulinemic hypoglycemia is not a defining feature of NIPHS, since some insulinoma patients also suffer from these symptoms.

    “Above all, exercise-induced or postprandial hyperinsulinemic hypoglycemia is not a defining feature of NIPHS, since some insulinoma patients also suffer from these symptoms”
    Quote in the paperNot a substantial claim1 of 3 sources checked
    • cites [55] Maher, 2022, Metastatic Insulinoma Presenting With Postprandial Hypoglycemia, AACE Clin. Case Rep. source

      The Discussion (page unavailable) reports that insulinoma can present with postprandial hypoglycemia, supporting the point that this symptom is not exclusive to NIPHS. It does not address exercise-induced hypoglycemia or directly discuss which features define NIPHS. (LLM, conf=0.85)

      Experimental — accuracy not yet measured
    • cites [56] Samos, 2020, Insulinoma Presenting with Postprandial Hypoglycemia and a Low Body Mass Index: A Case Report, World J. Surg.

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites [57] Kalman, 2007, Diffuse Nesidioblastosis as a Cause of Hyperinsulinemic Hypoglycemia in Adults: A Diagnostic and Therapeutic Challenge, Surgery source
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation
    § 3. Discussion 3. Discussion · p. 8

    Experimental evidence suggests that higher basal insulin secretion and changes in the resting membrane potential of β-cells might contribute to the biochemical and clinical findings of adult NIPHS.

    “Some experimental evidence suggests that a higher basal insulin secretion, as well as changes in the resting membrane potential of β -cells, might contribute to the biochemical and clinical findings of the disease [50-52].”
    Quote in the paperNot a substantial claim1 of 3 sources checked
    • cites [50] Conget, 1997, β-Cell Function Abnormalities in Islets from an Adult Subject with Nesidioblastosis and Autoantibodies against the Islet Cells, Pancreas source
    • cites [51] Berglund, 2010, Electrical Short-Circuit in β-Cells from a Patient with Non-Insulinoma Pancreatogenous Hypoglycemic Syndrome (NIPHS): A Case Report, J. Med. Case Rep.

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites [52] Koneshamoorthy, 2022, Case Report: Hypoglycemia Due to a Novel Activating Glucokinase Variant in an Adult—A Molecular Approach, Front. Endocrinol. source

      The Results (Pancreatic Islet Analysis; page unavailable) report higher glucose-stimulated insulin secretion in the patient’s islets, and the Discussion links altered β-cell function to a lower threshold for insulin release. The copy does not establish higher basal insulin secretion or report changes in resting membrane potential; its basal calcium measurement showed no significant difference. The evidence comes from one adult with an activating glucokinase variant, not adult NIPHS generally. (LLM, conf=0.83)

      Experimental — accuracy not yet measured
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation
    § 3. Discussion 3. Discussion · p. 8

    The most frequent underlying cause of hyperinsulinemic hypoglycemia in the adult patient is (benign) insulinoma.

    “The most frequent underlying cause of hyperinsulinemic hypoglycemia in the adult patient is (benign) insulinoma [44].”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites [44] Chadli, 2019, Hypoglycemia Controlled by Prednisone in an Occult Insulinoma or a Nesidioblastosis, Open J. Endocr. Metab. Dis. source

      The Introduction identifies insulinoma as a tumor that causes hypoglycemia, and the Discussion says nesidioblastosis accounts for less than 5% of adult endogenous hyperinsulinism cases. Neither passage establishes that insulinoma is the most frequent cause of adult hyperinsulinemic hypoglycemia or that the insulinomas in question are benign. The indexed passages provide no page number for these sections. (LLM, conf=0.82)

      Experimental — accuracy not yet measured
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation
    § 3. Discussion 3. Discussion · p. 8

    It is estimated that about 1 in 10,000,000 people are diagnosed with idiopathic/sporadic adult-onset nesidioblastosis annually.

    “It is estimated that about 1 in 10,000,000 people are diagnosed with this disease annually [45-48].”
    Quote in the paperNot a substantial claim3 of 4 sources checked
    • cites [45] Yamada, 2020, Nationwide Survey of Endogenous Hyperinsulinemic Hypoglycemia in Japan (2017–2018): Congenital Hyperinsulinism, Insulinoma, Non-Insulinoma Pancreatogenous Hypoglycemia Syndrome and Insulin Autoimmune Syndrome (Hirata’s Disease), J. Diabetes Investig. source

      The Results (Non-insulinoma pancreatogenous hypoglycemia syndrome; page unavailable) report 10 patients with adult-onset nesidioblastosis, and the Discussion describes NIPHS as rare. Neither passage estimates one diagnosis per 10,000,000 people annually; the reported prevalence of 0.09 per 100,000 is for the broader NIPHS category, not annual diagnoses of nesidioblastosis. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
    • cites [46] Walmsley, 1995, Nesidioblastosis in an Elderly Patient, Diabet. Med. source
    • cites [47] Mathur, 2009, Insulinoma, Surg. Clin. N. Am. source

      The opening Insulinoma section gives an annual incidence of 4 per million for insulinoma, not idiopathic or sporadic adult-onset nesidioblastosis. Searches for nesidioblastosis and the claimed 1-in-10-million annual figure found no passage addressing that disease’s incidence in our copy. (LLM, conf=0.76)

      Experimental — accuracy not yet measured
    • cites [48] Woo, 2015, Clinical Features and Causes of Endogenous Hyperinsulinemic Hypoglycemia in Korea, Diabetes Metab. J. source

      The Discussion (page not available) says adult nesidioblastosis is very rare, accounting for approximately 0.5% of endogenous hyperinsulinemic hypoglycemia cases. It does not give an annual population diagnosis rate of 1 in 10,000,000 or an estimate specific to idiopathic or sporadic adult-onset disease. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation
    § 3. Discussion 3. Discussion · p. 8

    The potassium channel activator diazoxide has been shown to alleviate symptoms in some cases of NIPHS.

    “While a low carbohydrate diet or α -glucosidase inhibitors are not effective in most patients, the potassium channel activator diazoxide has been shown to alleviate symptoms in some cases [58,59].”
    Quote in the paperNot a substantial claim1 of 2 sources checked
    • cites [58] Leibowitz, 1995, Hyperinsulinemic Hypoglycemia of Infancy (Nesidioblastosis) in Clinical Remission: High Incidence of Diabetes Mellitus and Persistent Beta-Cell Dysfunction at Long-Term Follow-Up, J. Clin. Endocrinol. Metab. source
    • cites [59] Dardano, 2020, Nesidioblastosis and Insulinoma: A Rare Coexistence and a Therapeutic Challenge, Front. Endocrinol. source

      The Discussion (page unavailable) lists diazoxide among treatments reported in isolated nesidioblastosis case reports, supporting its use in some cases. It does not say that diazoxide alleviated symptoms in those cases; in the paper’s own Case Report, it was withdrawn because of adverse effects. (LLM, conf=0.82)

      Experimental — accuracy not yet measured
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation
    § 3. Discussion 3. Discussion · p. 8

    Stimulation of somatostatin receptors by octreotide, lanreotide, or pasireotide has repeatedly been described in the literature in the context of NIPHS.

    “The stimulation of somatostatin receptors by octreotide, lanreotide, or pasireotide has also repeatedly been described in the literature in the context of NIPHS.”
    Quote in the paperNot a substantial claim3 of 3 sources checked
    • cites [52] Koneshamoorthy, 2022, Case Report: Hypoglycemia Due to a Novel Activating Glucokinase Variant in an Adult—A Molecular Approach, Front. Endocrinol. source

      The Introduction’s Clinical Case section (page unavailable) describes octreotide and pasireotide as somatostatin analogues that activate specified somatostatin receptors. It reports their use in one patient with hypoglycemia due to a glucokinase variant, but does not mention lanreotide or establish that receptor stimulation by these drugs has repeatedly been described in NIPHS. (LLM, conf=0.87)

      Experimental — accuracy not yet measured
    • cites [61] Dauriz, 2018, A Case Report of Insulinoma Relapse on Background Nesidioblastosis: A Rare Cause of Adult Hypoglycemia, J. Clin. Endocrinol. Metab. source

      The paper describes octreotide and lanreotide as somatostatin-receptor ligands used for refractory nesidioblastosis (Abstract), and discusses pasireotide as a multi-receptor ligand used in this case (Discussion; Conclusions). But it identifies only at least one earlier case of pasireotide use in adult nesidioblastosis (Abstract), so it does not establish that use of all three drugs in this context has repeatedly been described in the literature. (LLM, conf=0.82)

      Experimental — accuracy not yet measured
    • cites [62] Schwetz, 2016, Successful Medical Treatment of Adult Nesidioblastosis with Pasireotide over 3 Years, Medicine source

      The Introduction and Clinical Case (page not available) report pasireotide treatment for adult nesidioblastosis and an unsuccessful trial of octreotide. The Discussion also compares pasireotide with octreotide in a reported post-bypass hypoglycemia case. Our copy does not mention lanreotide or establish that all three drugs have repeatedly been described in the NIPHS literature. (LLM, conf=0.87)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation
    § 3. Discussion 3. Discussion · p. 8

    Mechanistic data on adult-onset NIPHS is scarce, whereas the pathophysiology of persistent hyperinsulinemic hypoglycemia in childhood and infancy is well understood genetically and functionally.

    “While the pathophysiology of persistent hyperinsulinemic hypoglycemia in childhood and infancy, which is morphologically similar to NIPHS, is well understood from a genetic and functional point of view, mechanistic data on adult-onset NIPHS is scarce [49].”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites [49] Stanley, 2016, Perspective on the Genetics and Diagnosis of Congenital Hyperinsulinism Disorders, J. Clin. Endocrinol. Metab. source

      The Abstract (page unavailable) describes genetic causes of congenital hyperinsulinism and advances in understanding pancreatic β-cell insulin secretion, supporting the childhood and infancy portion of the claim. The copy does not address whether mechanistic data on adult-onset NIPHS are scarce or establish the asserted morphological similarity; searches for NIPHS and adult nesidioblastosis found no such discussion. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation
    § 3. Discussion 3. Discussion · p. 8

    68Ga DOTA-Exendin-4 PET/CT is especially helpful in distinguishing occult or ectopic insulinoma from NIPHS and to separate focal and diffuse nesidioblastosis.

    “The latter is especially helpful in distinguishing occult or ectopic insulinoma from NIPHS and to separate focal and diffuse nesidioblastosis [29].”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites [29] Kim, 2016, Difficult Diagnosis and Localization of Focal Nesidioblastosis: Clinical Implications of 68Gallium-DOTAD-Phe1-Tyr3-Octreotide PET Scanning, Ann. Surg. Treat. Res. source

      The Case Report and Discussion describe 68Ga-DOTATOC PET localizing a lesion in one patient with focal nesidioblastosis, not 68Ga DOTA-Exendin-4 PET/CT. The Discussion mentions NIPHS and the focal and diffuse forms of nesidioblastosis, but does not report that the claimed scan distinguishes insulinoma from NIPHS or separates the two forms (pages unavailable in our copy). (LLM, conf=0.76)

      Experimental — accuracy not yet measured
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation
    § Diagnostic Algorithm in Hypoglycemia · p. 10

    Boss and colleagues presented cell culture and mouse in vivo data on selective destruction of GLP-1-expressing cells via targeted photodynamic therapy.

    “Boss and colleagues presented cell culture and mouse in vivo data on selective destruction of GLP-1-expressing cells via targeted photodynamic therapy.”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites [70] Boss, 2020, Receptor-Targeted Photodynamic Therapy of Glucagon-like Peptide 1 Receptor-Positive Lesions, J. Nucl. Med. source

      The Results sections report selective cell death in GLP-1R–positive cell cultures and cellular damage in GLP-1R–positive tumors in mice. The claim calls the targets “GLP-1-expressing cells,” but the paper identifies them as cells expressing the GLP-1 receptor (GLP-1R), not GLP-1 itself. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation
    § Diagnostic Algorithm in Hypoglycemia · p. 10

    In the pre-CGM era, total loss of glycemic control was associated with severe complications in patients undergoing total pancreatectomy.

    “In the pre-CGM era, the total loss of glycemic control was associated with severe complications in patients undergoing total pancreatectomy [35,66,69].”
    Quote in the paperNot a substantial claim3 of 3 sources checked
    • cites [35] Zhao, 2023, Diabetes Management in Patients Undergoing Total Pancreatectomy: A Single Center Cohort Study, Front. Endocrinol. source

      The Introduction (page unavailable) reports that early postoperative fasting glucose was an independent risk factor for complications after total pancreatectomy. It does not place that association in a pre-CGM era, describe a total loss of glycemic control, or specify that the complications were severe. (LLM, conf=0.83)

      Experimental — accuracy not yet measured
    • cites [66] Suzuki, 2017, The Clinical Outcomes after Total Pancreatectomy, Dig. Surg. source

      The Endocrine and Exocrine Replacement after TP section says patients were considered at high risk of hypoglycemia in the past, and the Long-Term Survival Rates after TP section reports deaths from post-TP hypoglycemia. The paper does not describe a total loss of glycemic control or specifically establish these complications as occurring in a pre-CGM era. (LLM, conf=0.86)

      Experimental — accuracy not yet measured
    • cites [69] Zakaria, 2016, Total Pancreatectomy: Short- and Long-Term Outcomes at a High-Volume Pancreas Center, World J. Gastrointest. Surg. source

      The Discussion (page not provided) says diabetes after total pancreatectomy can be difficult to control and cites reported deaths from hypoglycemia, though none occurred in this study. The Methods define major glycemic events as complications or readmissions related to severe hyperglycemia or hypoglycemia. The paper does not characterize these outcomes as a total loss of glycemic control or specifically place them in a pre-CGM era. (LLM, conf=0.83)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Interpretationcitation
    § 3. Discussion 3. Discussion · p. 8

    A positive fasting test neither confirms insulinoma nor excludes NIPHS.

    “As can be seen from our case and other reports in the literature, a positive fasting test neither confirms insulinoma nor excludes NIPHS [53,54].”
    Quote in the paperSubstantial claim1 of 2 sources checked
    • cites [53] Kaczirek, 2004, Nesidioblastosis: An Old Term and a New Understanding, World J. Surg. source
    • cites [54] Maguire, 2015, Lesson of the Month 2: An Unusual Presentation of Hyperinsulinaemic Hypoglycaemia with Possible Underlying Diagnosis of Glucose-Sensitive Insulinoma or Islet Cell Hyperplasia, Clin. Med. source
    • Rests on an assumption: In some cases, fasting hypoglycemia has been reported in patients with NIPHS.
  • May combine two claims.

    Findingown data
    § An Uncommon Cause of Recurrent Presyncope, Dizziness, and Tachycardia: A Case Report of Diffuse, Adult-Onset Nesidioblastosis/Non-Insulinoma Pancreatogenous Hypoglycemia Syndrome (NIPHS) · p. 1

    A subtotal pancreatectomy was performed, and the diagnosis of diffuse, adult-onset nesidioblastosis was established histopathologically.

    “A subtotal pancreatectomy was performed, and the diagnosis of diffuse, adult-onset nesidioblastosis was established histopathologically.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingnone given
    § An Uncommon Cause of Recurrent Presyncope, Dizziness, and Tachycardia: A Case Report of Diffuse, Adult-Onset Nesidioblastosis/Non-Insulinoma Pancreatogenous Hypoglycemia Syndrome (NIPHS) · p. 1

    After nine months, the symptoms recurred, making complete pancreatectomy necessary.

    “After nine months, the symptoms recurred, making complete pancreatectomy necessary.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingnone given
    § 2. The Case · p. 3

    These episodes occurred several times a day and were accompanied by presyncope, dizziness, blurred vision, nausea, urgent urination, shortness of breath, joint pain, muscle pain, and muscle weakness.

    “These episodes occurred several times a day and were accompanied by presyncope, dizziness, blurred vision, nausea, urgent urination, shortness of breath, joint pain, muscle pain, and muscle weakness.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Findingnone given
    § 2. The Case · p. 5

    Diabetic control was further complicated by early dumping syndrome and severe nausea.

    “Diabetic control was further complicated by early dumping syndrome and severe nausea.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data
    § 2. The Case · p. 5

    A complete pancreatectomy (classical Whipple procedure) was performed, and histopathological examination again confirmed a pattern typical of diffuse, adult nesidioblastosis.

    “A complete pancreatectomy (classical Whipple procedure) was performed, and histopathological examination again confirmed a pattern typical of diffuse, adult nesidioblastosis.”
    Quote in the paperSubstantial claim
  • Classified as probably not a substantial claim.

    Findingreasoning
    § 2. The Case · p. 4

    Since conservative treatment was unsuccessful, the patient underwent a subtotal, left-sided, spleen-preserving pancreatectomy.

    “Since conservative treatment was unsuccessful, the patient underwent a subtotal, left-sided, spleen-preserving pancreatectomy.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data
    § 2. The Case · p. 4

    Immunohistochemistry demonstrated a physiological distribution of insulin-, glucagon-, and somatostatin-producing cells within the islets, with a proliferation rate <1% (Ki-67).

    “Immunohistochemistry demonstrated a physiological distribution of insulin-, glucagon-, and somatostatin-producing cells within the islets, with a proliferation rate &lt; 1% (Ki-67).”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingown data
    § 2. The Case · p. 3

    The 23-year-old patient presented with a history of unspecific, neurovegetative symptoms in the Department of Endocrinology at the Heidelberg University Hospital.

    “The 23-year-old patient presented with a history of unspecific, neurovegetative symptoms in the Department of Endocrinology at the Heidelberg University Hospital.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingown data
    § 2. The Case · p. 5

    In the case of total pancreatectomy, 1 IU of insulin can lead to a decrease in blood glucose of 50-70 mg/dL depending on the time of day, compared to 30-40 mg/dL in type 1 diabetes.

    “In the case of total pancreatectomy, which leads to a total loss of glycemic control, 1 IU of insulin can lead to a decrease in blood glucose of 50-70 mg/dL (personal experience; insulin correction factor [see above]; this is compared to 30-40 mg/dL in type 1 diabetes) depending on the time of day, which makes the management of type 3c diabetes challenging.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingnone given
    § 2. The Case · p. 3

    The symptom onset could be traced back to episodes of severe supraventricular tachycardia starting eight years prior.

    “The symptom onset could be traced back to episodes of severe supraventricular tachycardia starting eight years prior.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Findingown data
    § 2. The Case · p. 3

    The HbA1c at that time was 5.1% (32.2 mmol/mol), corresponding to an average blood glucose of 84 mg/dL.

    “The HbA1c at that time was 5.1% (32.2 mmol/mol), corresponding to an average blood glucose of 84 mg/dL.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingnone given
    § 2. The Case · p. 5

    On the 11th postoperative day, the patient developed a severe hemorrhagic shock due to the Forrest Ib bleeding of an ulcer in the gastroenterostomy.

    “On the 11th postoperative day, the patient developed a severe hemorrhagic shock due to the Forrest Ib bleeding of an ulcer in the gastroenterostomy.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingown data
    § 2. The Case · p. 3

    During one acute episode, slight hypokalemia (3.37 mmol/L) was documented.

    “When presenting at the emergency department of a local hospital during one acute episode, slight hypokalemia (3.37 mmol/L) was documented.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingreasoning
    § 2. The Case · p. 5

    Due to cachexia, partial parenteral nutrition is still needed (950 kcal/day).

    “Due to cachexia, partial parenteral nutrition is still needed (950 kcal/day).”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingown data
    § 2. The Case · p. 3

    Values in the same range were reported when the patient went for a walk within the first 2-3 h after food intake.

    “Values in the same range were reported when the patient went for a walk within the first 2-3 h after food intake.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: The patient's self-reported symptoms and self-measured blood glucose values are reliable.
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Findingnone given
    § 2. The Case · p. 4

    The postoperative course was complicated by pancreatic fistula, which was treated conservatively, and delayed gastric emptying due to postoperative pyloric stenosis.

    “The postoperative course was complicated by pancreatic fistula, which was treated conservatively, and delayed gastric emptying due to postoperative pyloric stenosis.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data
    § 2. The Case · p. 4

    68Ga-DOTA-Exendin-4 PET/CT did not reveal a focal enrichment, but a diffuse tracer enrichment throughout the whole pancreas.

    “68 Ga-DOTA-Exendin-4 PET/CT, which targets glucagon-like peptide 1 (GLP-1)-expressing cells, did also not reveal a focal enrichment, but a diffuse tracer enrichment throughout the whole pancreas.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingnone given
    § 2. The Case · p. 5

    After nine months, symptomatic hypoglycemia reappeared, which also became apparent since the patient used a continuous glucose monitoring (CGM) system.

    “After nine months, symptomatic hypoglycemia reappeared, which also became apparent since the patient used a continuous glucose monitoring (CGM) system.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingnone given
    § 2. The Case · p. 5

    The type 3c diabetes is well controlled with a combination of regular and NPH insulin.

    “The type 3c diabetes is well controlled with a combination of regular (insulin correction factor: 50 mg/dL, insulin-to-carb ratio: 1:10) and NPH insulin (three times daily; 4 IU [6 a.m.], 3-4 IU [2 p.m.], 3-4 IU [10 p.m.]).”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data
    § 2. The Case · p. 5

    Extra-pancreatic insulin production was ruled out with 68Ga-DOTA-Exendin-4 PET/CT, which only revealed diffuse tracer enrichment in the residual pancreatic head with a maximum standardized uptake value (SUVmax) of 10.26.

    “Extra-pancreatic insulin production was ruled out with 68 Ga-DOTA-Exendin-4 PET/CT, which only revealed diffuse tracer enrichment in the residual pancreatic head with a maximum standardized uptake value (SUVmax) of 10.26 (Figure 2).”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingnone given
    § 2. The Case · p. 5

    Since hospital discharge, no severe hypoglycemic events have been reported.

    “Since hospital discharge, no severe hypoglycemic events have been reported.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingnone given
    § 2. The Case · p. 3

    Screening for hepatic, renal, adrenal, and pituitary insufficiency, severe inflammation, insulin-like growth factor overproduction, or insulin/insulin receptor autoantibodies was negative.

    “Screening for hepatic, renal, adrenal, and pituitary insufficiency, severe inflammation, insulin-like growth factor overproduction, or insulin/insulin receptor autoantibodies was negative.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Findingown data
    § 2. The Case · p. 5

    Currently, the HbA1c of the patient is 6.6% [59.6 mmol/mol], corresponding to an average blood glucose of 143 mg/dL with a time in range (70-180 mg/dL) of approximately 70%, as documented by the CGM device.

    “Currently, the HbA1c of our patient is 6.6% [59.6 mmol/mol], corresponding to an average blood glucose of 143 mg/dL with a time in range (70-180 mg/dL) of approximately 70%, as documented by the CGM device.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingnone given
    § 2. The Case · p. 4

    Upon diazoxide treatment, the patient became hypotonic, tachycardic, and developed angina pectoris, resulting in a non-ST-segment elevation myocardial infarction (NSTEMI).

    “Upon diazoxide treatment, the patient became hypotonic, tachycardic, and developed angina pectoris, resulting in a non-ST-segment elevation myocardial infarction (NSTEMI).”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingreasoning
    § 3. Discussion 3. Discussion · p. 8

    The clinical and laboratory findings in the presented patient were neither exclusively suggestive of insulinoma nor of a functional β-cell disorder.

    “Taken together, the clinical and laboratory findings in our patient were neither exclusively suggestive of insulinoma nor of a functional β -cell disorder.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation
    § 1. Introduction · p. 2

    Clinically, adult-onset nesidioblastosis presents with neuroglycopenic as well as adrenergic symptoms related to hypoglycemia, including impaired consciousness, visual, sensorimotor and speech abnormalities, headaches, seizures, anxiety, tremors, tachycardia, sweating, and many more.

    “Clinically, adult-onset nesidioblastosis presents with neuroglycopenic as well as adrenergic symptoms related to hypoglycemia. These include impaired consciousness, visual, sensorimotor and speechabnormalities, headaches, seizures, anxiety, tremors, tachycardia, sweating, and many more [25].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [25] Luca, 2018, Clinical Presentation of 54 Patients with Endogenous Hyperinsulinaemic Hypoglycaemia: A Neurological Chameleon (Observational Study), Swiss Med. Wkly.

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation
    § 1. Introduction · p. 2

    Historically, nesidioblastosis represents a histopathological finding, which describes the budding or neoformation of endocrine islets cells from the exocrine ducts of the pancreas.

    “Historically, nesidioblastosis represents a histopathological finding, which describes the budding or neoformation of endocrine islets cells from the exocrine ducts of the pancreas [21].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [21] Laidlaw, 1938, Nesidioblastoma, the Islet Tumor of the Pancreas, Am. J. Pathol.
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation
    § 1. Introduction · p. 2

    Minor criteria for adult-onset nesidioblastosis comprise islet hypertrophy, islet hyperplasia, lobulated islets, and macronucleoli within the β-cells.

    “Apart from that, minor criteria comprise islet hypertrophy, islet hyperplasia, lobulated islets, and macronucleoli within the β -cells [22-24].”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites [22] Anlauf, 2005, Persistent Hyperinsulinemic Hypoglycemia in 15 Adults with Diffuse Nesidioblastosis: Diagnostic Criteria, Incidence, and Characterization of β-Cell Changes, Am. J. Surg. Pathol. source
    • cites [23] Anlauf, 2006, Microadenomatosis of the Endocrine Pancreas in Patients with and without the Multiple Endocrine Neoplasia Type 1 Syndrome, Am. J. Surg. Pathol. source
    • cites [24] Anlauf, 2008, Adult Diffuse Nesidioblastosis: Genetically or Environmentally Induced?, Hum. Pathol. source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation
    § 1. Introduction · p. 2

    The gold standard for diagnosing insulinomas is the proof of hyperinsulinemic hypoglycemia in a prolonged 72 h fasting test.

    “The gold standard for diagnosing insulinomas is the proof of hyperinsulinemic hypoglycemia in a prolonged 72 h fasting test [13].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [13] Stamatakos, 2009, Insulinoma: A Rare Neuroendocrine Pancreatic Tumor, Chirurgia
  • Probably not a substantial claim: may not pass S2 (checkable).

    Interpretationreasoning
    § An Uncommon Cause of Recurrent Presyncope, Dizziness, and Tachycardia: A Case Report of Diffuse, Adult-Onset Nesidioblastosis/Non-Insulinoma Pancreatogenous Hypoglycemia Syndrome (NIPHS) · p. 1

    This case illustrates the diagnostic challenges in patients presenting with unspecific, neurovegetative and autonomic symptoms with a severe and rare underlying cause.

    “This case illustrates the diagnostic challenges in patients presenting with unspecific, neurovegetative and autonomic symptoms with a severe and rare underlying cause.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing), S4 (based).

    Premisenone given
    § 3. Discussion 3. Discussion · p. 7

    Rare diseases should be considered in patients if they present with progressive and/or additional symptoms.

    “Rare diseases should be considered in patients if they present with progressive and/or additional symptoms.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Premisenone given
    § 3. Discussion 3. Discussion · p. 7

    If hyperinsulinemic hypoglycemia is suspected, a prolonged (4-6 h) oral glucose tolerance test (OGTT) and a 72 h fasting test should be performed.

    “If hyperinsulinemic hypoglycemia is suspected, a prolonged (4-6 h) oral glucose tolerance test (OGTT) and a 72 h fasting test should be performed.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisereasoning
    § 2. The Case · p. 5

    Patients suffering from type 3c diabetes have a high susceptibility to hypoglycemia since the autonomic symptoms of hypoglycemia can be missing.

    “Patients suffering from this type of diabetes have a high susceptibility to hypoglycemia since the autonomic symptoms of hypoglycemia can be missing.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationown data
    § 2. The Case · p. 3

    Some values in the OGTT were not determined and therefore reactive postprandial hypoglycemia was suspected.

    “Unfortunately, some values were not determined and therefore reactive postprandial hypoglycemia was suspected.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing). May combine two claims.

    Premisenone given
    § 3. Discussion 3. Discussion · p. 7

    The diagnostic work-up of patients presenting with unspecific, autonomic symptoms is very complex, and distinguishing harmless functional disorders from severe organic dysfunctions can be challenging.

    “The diagnostic work-up of patients presenting with unspecific, autonomic symptoms is very complex, and distinguishing harmless functional disorders from severe organic dysfunctions can be challenging.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation
    § 1. Introduction · p. 2

    NIPHS comprises postprandial neuroglycopenic symptoms with documented hyperinsulinemic hypoglycemia, a negative 72 h fasting test, negative conventional imaging studies (MRI, CT), as well as a positive selective arterial calcium stimulation test with hepatic venous sampling (SACS).

    “It comprises postprandial neuroglycopenic symptoms with documented hyperinsulinemic hypoglycemia, a negative 72 h fasting test, negative conventional imaging studies (MRI, CT), as well as a positive selective arterial calcium stimulation test with hepatic venous sampling (SACS) [26,27].”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites [26] Service, 1999, Noninsulinoma Pancreatogenous Hypoglycemia: A Novel Syndrome of Hyperinsulinemic Hypoglycemia in Adults Independent of Mutations in Kir6.2 and SUR1 Genes, J. Clin. Endocrinol. Metab.

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites [27] Mathavan, 2010, Management of Postgastric Bypass Noninsulinoma Pancreatogenous Hypoglycemia, Surg. Endosc. source
  • May combine two claims.

    Interpretationown data
    § 2. The Case · p. 5

    Two years postoperatively, no endogenous insulin production could be detected, as revealed by C-peptide levels below 0.1 ng/mL, which confirms the complete removal of all endocrine pancreatic tissue.

    “Two years postoperatively, no endogenous insulin production could be detected, as revealed by C-peptide levels below 0.1 ng/mL, which confirms the complete removal of all endocrine pancreatic tissue.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisereasoning
    § 2. The Case · p. 5

    Due to the reduction in or loss of functional endocrine pancreatic tissue, type 3c diabetes is pathophysiologically and clinically different from type 1 diabetes.

    “Due to the reduction in or loss of functional endocrine pancreatic tissue, i.e., mainly insulin, glucagon, somatostatin, and pancreatic polypeptide-secreting cells, it is pathophysiologically and clinically different from type 1 diabetes.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationreasoning
    § 2. The Case · p. 4

    The slight increase in blood glucose between 48 h and 70 h was attributed to a residual hepatic and/or renal gluconeogenesis, meaning that the amount of insulin in the blood was not sufficient to fully suppress gluconeogenesis.

    “The slight increase in blood glucose between 48 h and 70 h was attributed to a residual hepatic and/or renal gluconeogenesis, meaning that the amount of insulin in the blood was not sufficient to fully suppress gluconeogenesis.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Premisenone given
    § 3. Discussion 3. Discussion · p. 8

    Conventional sectional imaging of the abdomen helps to differentiate insulinoma from functional β-cell disorders.

    “The conventional sectional imaging of the abdomen helps to differentiate insulinoma from functional β -cell disorders.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationown data
    § 2. The Case · p. 4

    The concomitant increase in insulin and C-peptide levels indicated a persistent and inadequately high secretion of insulin, supporting the finding of hyperinsulinemic hypoglycemia.

    “The concomitant increase in insulin and C-peptide levels, however, indicated a persistent and inadequately high secretion of insulin, supporting the finding of hyperinsulinemic hypoglycemia.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation
    § 1. Introduction · p. 2

    Service et al. described the common findings associated with nesidioblastosis in 1999 and defined the term NIPHS for the clinical syndrome.

    “Service et al. described the common findings associated with nesidioblastosis in 1999, and defined the term NIPHS for the clinical syndrome [26].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [26] Service, 1999, Noninsulinoma Pancreatogenous Hypoglycemia: A Novel Syndrome of Hyperinsulinemic Hypoglycemia in Adults Independent of Mutations in Kir6.2 and SUR1 Genes, J. Clin. Endocrinol. Metab.

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing).

    Premisecitation
    § 3. Discussion 3. Discussion · p. 7

    Hypoglycemia in the non-diabetic adult patient needs a thorough clinical and laboratory work-up.

    “Hypoglycemia in the non-diabetic adult patient needs a thorough clinical and laboratory work-up [4].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [4] Geraghty, 2008, Hypoglycaemia in an Adult Male: A Surprising Finding in Pursuit of Insulinoma, Surgeon source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation
    § 2. The Case · p. 5

    According to the American Diabetes Association (ADA), type 3c diabetes, also known as pancreoprivic diabetes, is defined as a special form of diabetes caused by a global dysfunction of the entire pancreas, as seen in acute or chronic pancreatitis, cystic fibrosis, pancreatic neoplasia, pancreatic trauma, or the partial/total surgical removal of the pancreas.

    “According to the American Diabetes Association (ADA), type 3c diabetes, also known as pancreoprivic diabetes, is defined as a special form of diabetes caused by a global dysfunction of the entire pancreas, as seen in acute or chronic pancreatitis, cystic fibrosis, pancreatic neoplasia, pancreatic trauma, or the partial/total surgical removal of the pancreas (as in this case) [31].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [31] Association, 2021, Classification and Diagnosis of Diabetes: Standards of Medical Care in Diabetes-2021, Diabetes Care source
  • May combine two claims.

    Premisecitation
    § 3. Discussion 3. Discussion · p. 8

    There is currently no established hypothesis to explain the morphological differences between NIPHS patients or to correlate morphological findings with clinical presentations.

    “There is, however, currently no established hypothesis to explain the morphological differences between patients or to correlate the morphological findings with clinical presentations [22,24].”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites [22] Anlauf, 2005, Persistent Hyperinsulinemic Hypoglycemia in 15 Adults with Diffuse Nesidioblastosis: Diagnostic Criteria, Incidence, and Characterization of β-Cell Changes, Am. J. Surg. Pathol. source
    • cites [24] Anlauf, 2008, Adult Diffuse Nesidioblastosis: Genetically or Environmentally Induced?, Hum. Pathol. source
  • May combine two claims.

    Premisenone given
    § Diagnostic Algorithm in Hypoglycemia · p. 10

    In most cases, surgical intervention is the only definitive approach to reduce the frequency and intensity of hypoglycemic events and simultaneously allows for a definitive histological diagnosis.

    “In most cases, surgical intervention is the only definitive approach to reduce the frequency and intensity of hypoglycemic events and simultaneously allows for a definitive histological diagnosis.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation
    § 3. Discussion 3. Discussion · p. 8

    Idiopathic/sporadic adult-onset nesidioblastosis with hyperinsulinemic hypoglycemia is an extremely rare disease that occurs much less frequently.

    “Idiopathic/sporadic adult-onset nesidioblastosis with hyperinsulinemic hypoglycemia is an extremely rare disease that occurs much less frequently.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based). May combine two claims.

    Premisenone given
    § 4. Conclusions · p. 10

    Diffuse adult-onset nesidioblastosis is a rare disorder presenting with hyperinsulinemic hypoglycemia and various clinical symptoms that can easily be misinterpreted as, for example, an anxiety disorder.

    “Diffuse adult-onset nesidioblastosis is a rare disorder presenting with hyperinsulinemic hypoglycemia and various clinical symptoms, which can easily be misinterpreted as, e.g., anxiety disorder.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premiseown data
    § 3. Discussion 3. Discussion · p. 8

    Severe adverse effects of diazoxide treatment have been reported in NIPHS, as also illustrated by the presented case.

    “However, severe adverse effects have been reported in this context, which is also illustrated by the presented case.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationreasoning
    § References · p. 11

    Novel imaging modalities such as 68Ga-DOTA-Exendin-4 PET/CT are helpful in distinguishing occult insulinomas from nesidioblastosis/NIPHS and help to avoid surgical intervention that is unnecessary or too extensive.

    “Novel imaging modalities like 68 Ga-DOTA-Exendin-4 PET/CT are helpful in distinguishing occult insulinomas from nesidioblastosis/NIPHS and help to avoid surgical intervention that is unnecessary or too expansive.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationreasoning
    § 3. Discussion 3. Discussion · p. 8

    Because octreotide and lanreotide mainly bind somatostatin receptor subtype 2, they inhibit both insulin and glucagon secretion, which might precipitate hypoglycemia.

    “Since octreotide and lanreotide mainly bind somatostatin receptor subtype 2, the substances both inhibit insulin and glucagon secretion, which might precipitate hypoglycemia.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisecitation
    § 3. Discussion 3. Discussion · p. 8

    Many patients with NIPHS report postprandial hypoglycemia, while others present with exercise-induced hypoglycemia or a combination of both.

    “While many patients with NIPHS report postprandial hypoglycemia, others present with exercise-induced hypoglycemia or a combination of both [28].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [28] Kaczirek, 2003, Nesidioblastosis in Adults: A Challenging Cause of Organic Hyperinsulinism, Eur. J. Clin. Investig. source
  • May combine two claims.

    Premisecitation
    § Diagnostic Algorithm in Hypoglycemia · p. 10

    Some NIPHS patients are relieved from all symptoms upon left-sided partial/subtotal pancreatectomy, while others need total pancreatectomy for symptom control.

    “While some patients are relieved from all symptoms upon left-sided partial/subtotal pancreatectomy, others need to undergo total pancreatectomy for symptom control [63-65].”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites [63] Cristiano, 2014, Endogenous Hyperinsulinemic Hypoglycemia Syndrome: Surgical Treatment, Cir. Esp.

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites [64] Haghighi, 2016, Synchronous Nesidioblastosis, Endocrine Microadenoma, and Intraductal Papillary Mucinous Neoplasia in a Man Presenting with Hyperinsulinemic Hypoglycemia, Pancreas source
    • cites [65] Clancy, 2006, Post−Gastric Bypass Hyperinsulinism With Nesidioblastosis: Subtotal or Total Pancreatectomy May Be Needed to Prevent Recurrent Hypoglycemia, J. Gastrointest. Surg. source
  • Classified as probably not a substantial claim.

    Interpretationnone given
    § 3. Discussion 3. Discussion · p. 8

    Histopathological confirmation of the diagnosis remains the gold standard in NIPHS/diffuse adult-onset nesidioblastosis.

    “However, the histopathological confirmation of the diagnosis, as beautifully illustrated by Figure 1, still is the gold standard in NIPHS/diffuse adult-onset nesidioblastosis.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationreasoning
    § Diagnostic Algorithm in Hypoglycemia · p. 10

    The rapid onset of new hypoglycemic events after partial pancreatectomy could be correlated with significant tracer uptake on 68Ga-DOTA-Exendin-4 PET/CT imaging.

    “Of note, this could be correlated with significant tracer uptake upon imaging using 68 Ga-DOTA-Exendin-4 PET/CT.”
    Quote in the paperNot a substantial claim
75 of 75
  • The paper relies on this without support.

    The patient's self-reported symptoms and self-measured blood glucose values are reliable.

    “Blood glucose measurements performed by the patient shortly (approximately 30 min) after meals reproducibly yielded unexpectedly low values in the range of 40-70 mg/dL.”
    “Of interest, the patient reported that the above-described episodes occurred more frequently after food intake, physical exercise, or a combination of both.”
  • The paper relies on this without support.

    Factitious or iatrogenic hypoglycemia could be ruled out.

    “As factitious or iatrogenic hypoglycemia could be ruled out, endogenous hyperinsulinemic hypoglycemia was diagnosed.”
  • The paper relies on this without support.

    In some cases, fasting hypoglycemia has been reported in patients with NIPHS.

    “In some cases, fasting hypoglycemia was also reported in NIPHS.”
3 of 3

Cites

Flagged first, then by citations

2 of the 76 references couldn’t be matched to a known paper.

Research works printed but not linked: 3

  1. Woodcock, 2019, Diabetes Care after Pancreatic Surgery, J. Diabetes Nurs., 23, 1
  2. Cavallo, 2019, Management of Total Pancreatectomy-Induced Diabetes Mellitus : A Mini-Review, Austin Pancreat Disord, 3, 1012
  3. Cristiano, 2014, Endogenous Hyperinsulinemic Hypoglycemia Syndrome: Surgical Treatment, Cir. Esp., 92, 547

Cited by

Sorted by citations

Authors
Dieterle, M. P., Husari, A., Prozmann, S. N., Wiethoff, H., Stenzinger, A., Röhrich, M., Pfeiffer, U., Kießling, W. R., Engel, H., Sourij, H., Steinberg, T., Tomakidi, P., Kopf, S., & Szendroedi, J.
Affiliations
  • University of Freiburg (DE)
  • University Hospital Heidelberg (DE)
  • Pfalzklinikum for Psychiatry and Neurology AdÖR, Weinstr. 100, 76889 Klingenmünster, Germany
  • Independent Researcher, 72250 Freudenstadt, Germany
  • German Cancer Research Center (DE)
  • Medical University of Graz (AT)
  • Heidelberg University (DE)
Corresponding author
Dieterle, Martin Philipp
Venue
Biomedicines
Publisher
MDPI AG
Published
2023-06-17
Volume
11
Issue
6
Pages
1741
ISSN
2227-9059 (ISSN-L)
OpenAlex
W4381251859
Cited by
5
References
76
Citations by year
2026: 1 · 2025: 2 · 2024: 1 · 2023: 1
FWCI
0.85
Type
journal article
Language
en
Open access
Locations
  • Biomedicines (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • PubMed Central (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Health Sciences › Medicine › Epidemiology › Neuroendocrine Tumor Research Advances
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Diabetes and associated disorders
Keywords
endogenous hyperinsulinism, postprandial hypoglycemia, exercise-induced hypoglycemia, presyncope, dizziness, tachycardia, subtotal pancreatectomy, C-peptide

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Claims read by deepseek-v4.1-flash under definition version 3 (extract-v3) on 2026-10-14.

Classified by jev-1.13-20260917 (gold-guideline-v0.2) on 2026-10-14.

Cited sources are checked by gpt-6-sol.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review