The DOI matches its Crossref record.
Pre‐clinical Cushing's syndrome: an unexpected frequent cause of poor glycaemic control in obese diabetic patients
Abstract
OBJECTIVE: Autonomous cortisol secretion without clinical stigmata of Cushing's syndrome (CS) has been recently recognized and termed pre-clinical or sub-clinical CS. The common assumption is that CS is an extremely rare cause of uncontrolled diabetes; however, the prevalence of this entity has not been studied. We assessed the prevalence of pre-clinical CS among obese patients with uncontrolled diabetes. PATIENTS AND DESIGN: (1) In a retrospective analysis, the medical records of 63 patients with endogenous CS were reviewed. (2) In a cross-sectional study, 90 obese patients (BMI > 25 kg/m2) followed in a University Hospital and the local Health Fund endocrine and diabetes clinics, with poorly controlled diabetes (glycosylated haemoglobin > 9%), underwent an overnight 1 mg dexamethasone suppression. In patients with non-suppressible cortisol levels (> 140 nmol/l), Liddle's 2 and 8 mg dexamethasone suppression tests and imaging studies were performed. MEASUREMENTS: The prevalence of poorly controlled diabetes, the major presenting symptom of CS, was assessed in the retrospective analysis. The prevalence of "true' CS and the false positive rate in the overnight dexamethasone suppression test were calculated. The endocrine evaluation of the patients with pre-clinical CS and the effects of surgical cure on glycaemic control are described. RESULTS: In the retrospective analysis, 11 (17.5%) had diabetes and 2 (3.2%) lacked the classic physical characteristics of the syndrome. In the cross-sectional study, 4 patients failed to suppress plasma cortisol (< 140 nmol/l). In one patient the diagnosis of CS was not confirmed by a standard Liddle's test and was therefore considered false positive. In the other 3, the diagnosis of CS was confirmed (prevalence of 3.3%, 95% confidence interval 1-9%). In all other patients the overnight cortisol suppression test was normal (cortisol level 47.3 +/- 2.5 nmol/l (mean +/- SEM)). After surgical treatment of CS, glycaemic control was markedly improved in all 5 patients (2 from retrospective and 3 from cross-sectional studies). CONCLUSIONS: The prevalence of pre-clinical Cushing's syndrome in obese patients with poorly controlled diabetes appears to be considerably higher than previously believed. The overnight dexamethasone suppression test proved to be a simple, sensitive and highly specific screening test for Cushing's syndrome despite the presence of obesity and hyperglycaemia.
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“The association between DM and CS has been examined in various studies, which have shown a prevalence of previously unsuspected CS in patients with type DM ranging from % to .% (Table ) (-).”
From Glucose Metabolism Abnormalities in Cushing Syndrome: From Molecular Basis to Clinical Management (2017) · cites this paper as [245]
In the citing paper
“Available data consequently do not support largescale screening for CS in patients with type DM but may suggest a case-finding approach for hypercortisolism in diabetic patients with certain features (i.e., uncontrolled DM despite appropriate treatment, drug-resistant hypertension, Cushingoid appearance, central obesity, osteoporosis, or polycystic ovary syndrome) (, ).”
From Glucose Metabolism Abnormalities in Cushing Syndrome: From Molecular Basis to Clinical Management (2017) · cites this paper as [245]
In the citing paper
“In a cross-sectional study on 90 obese diabetic patients with poor metabolic control, Leibowitz et al. (63) found a 3.3% prevalence of SH due to an adrenal adenoma in one patient and a pituitary adenoma in two patients using 1-mg DST above 5.1 g/dl (140 nmol/liter) as a screening test.”
From Diagnosis and Treatment of Subclinical Hypercortisolism (2011) · cites this paper as [63]
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“In the other 3, the diagnosis of CS was confirmed (3 %) [13].”
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RetractedTRABAJOS ESPECIALES MANEJO DE PACIENTES CON SÍNDROME DE CUSHING.
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Мислення Як Фактор Самотворення Людини: Ситуація Антропоезису
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“However, unsuspected Cushing’s syndrome was found to be more frequent than previously expected in different series of diabetic patients submitted to routine screening (3, 4, 5).”
BackgroundResult
Metadata
- Authors
- Leibowitz, G., Tsur, A., Chayen, S. D., Salameh, M., Raz, I., Cerasi, E., & Gross, D. J.
- Affiliations
- Hebrew University of Jerusalem (IL)
- Corresponding author
- Gross, David J.
- Venue
- Clinical Endocrinology
- Publisher
- Wiley
- Published
- 1996-06
- Volume
- 44
- Issue
- 6
- Pages
- 717-722
- ISSN
- 0300-0664 (ISSN-L)
- 1365-2265
- OpenAlex
- W2019770879
- Cited by
- 180
- References
- 0
- Citations by year
- 2026: 1 · 2025: 2 · 2024: 2 · 2023: 1 · 2022: 3 · 2021: 5 · 2020: 3 · 2019: 4 · 2018: 3 · 2017: 6 · 2016: 7 · 2015: 12 · 2014: 5 · 2013: 4 · 2012: 12
- FWCI
- 1.34
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Clinical Endocrinology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Pituitary Gland Disorders and Treatments
- Health Sciences › Medicine › Surgery › Adrenal and Paraganglionic Tumors
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
- Keywords
- syndromes, uncontrolled diabetes, obesity, glycemic control, dexamethasone suppression test, prevalence, false positive rate, adrenalectomy, surgical treatment, screening test, glycosylated haemoglobin, hypercortisolism, adrenal incidentaloma
- MeSH terms
- Adult, Aged, Cross-Sectional Studies, Cushing Syndrome, Dexamethasone, Diabetes Mellitus, Female, Humans, Hydrocortisone, Male, Middle Aged, Obesity, Retrospective Studies, Prevalence
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