Cited by 269Adrenal and Paraganglionic TumorsPituitary Gland Disorders and TreatmentsAdrenal Hormones and Disorders

The DOI matches its Crossref record; 48 of the 53 references it cites were found in a registry or an index; none of the 44 sources its claims cite is checked for support yet.

Cortisol as a Marker for Increased Mortality in Patients with Incidental Adrenocortical Adenomas

Open access
Debono, Miguel, Bradburn, Mike, Bull, Matthew, Harrison, Barney, Ross, Richard J., Newell-Price, John·2014·The Journal of Clinical Endocrinology & Metabolism

Abstract

CONTEXT: Incidental benign adrenocortical adenomas, adrenal incidentalomas are found in 4.5% of abdominal computed tomography scans, with the incidence increasing to 10% in patients older than 70 years of age. These incidentalomas frequently show evidence of excess cortisol secretion but without overt Cushing's syndrome. The mortality rate is increased in Cushing's syndrome. OBJECTIVE: This study sought to investigate whether patients with adrenal incidentalomas have an increased mortality. DESIGN: This was a retrospective, longitudinal cohort study. SETTING: The study was carried out in an Endocrine Investigation Unit in a University Teaching Hospital. PATIENTS: Two hundred seventy-two consecutive patients with an incidental adrenal mass underwent a dedicated diagnostic protocol, which included dexamethasone testing for hypercortisolism between 2005 and 2013. Overall survival was assessed in 206 patients with a benign, adrenocortical adenoma. MAIN OUTCOME MEASURES: Survival analysis was carried out by using Kaplan-Meier curves and the effect of dexamethasone cortisol estimated by Cox-regression analysis. Cause-specific mortality was ascertained from death certificates and compared with local and national data. RESULTS: Eighteen of 206 patients died and the mean time (SD) from diagnosis to death was 3.2 (1.7) years. Seventeen of 18 patients who died had a post dexamethasone cortisol >1.8 μg/dL and there was a significant decrease in survival rate with increasing dexamethasone cortisol levels (P = .001). Compared with the <1.8 μg/dL group, the hazard ratio (95% confidence interval) for the 1.8-5 μg/dL group was 12.0 (1.6-92.6) whereas that of the >5 μg/dL group was 22.0 (2.6-188.3). Fifty percent and 33% of deaths were secondary to circulatory or respiratory/infective causes, respectively. CONCLUSIONS: PATIENTS with adrenal incidentalomas and a post-dexamethasone serum cortisol >1.8 μg/dL have increased mortality, mainly related to cardiovascular disease and infection.

Overview

AI snapshot

Written from the paper’s full text.

TL;DR

In a retrospective cohort of 206 patients with benign adrenocortical incidentalomas, higher post-dexamethasone serum cortisol was associated with increased mortality. Patients with cortisol >1.8 g/dL had markedly worse survival, mainly from circulatory and respiratory/infective causes.

Key findings

  • Eighteen of 206 patients died; mean (SD) time from diagnosis to death was 3.2 (1.7) years.
  • Seventeen of 18 patients who died had a post-dexamethasone cortisol >1.8 g/dL, and survival decreased with increasing cortisol levels (log-rank trend test, P = .001).
  • Compared with the <1.8 g/dL group, hazard ratios (95% CI) were 12.0 (1.6–92.6) for the 1.8–5 g/dL group and 22.0 (2.6–188.3) for the >5 g/dL group.
  • Causes of death were 50% circulatory and 33% respiratory/infective; malignancy accounted for 6%, lower than the local/national incidence of 29%.

Methods

  • Retrospective, longitudinal cohort study of 272 consecutive patients with incidental adrenal masses referred to an Endocrine Investigation Unit between January 2005 and July 2013; final survival analysis included 206 patients with benign adrenocortical adenoma.
  • Patients underwent a dedicated diagnostic protocol including a 1-mg overnight dexamethasone suppression test; cortisol groups were <1.8 g/dL, 1.8–5 g/dL, and >5 g/dL.
  • Survival was assessed with Kaplan-Meier curves and log-rank trend tests; hazard ratios were estimated by Cox regression. Cause-specific mortality came from death certificates and was compared with local Sheffield and UK national data; a subanalysis excluded patients with extra-adrenal malignancy (n = 190).

Limitations

  • Stated: small number of deaths and retrospective design preclude causative extrapolation; only an initial dexamethasone suppression test was available; dexamethasone levels were not measured; vaccination records were unavailable; hypercortisolism could be secondary to conditions such as alcoholism, depression, or psychotic disease, though no deaths from suicide or alcohol-related issues occurred.
  • Stated: multivariable modeling was limited by the small number of events, yielding unstable models and imprecise coefficients.
  • Evident from the text: single-center design, no prospective randomized intervention, and inability to determine whether patients died because of or with hypercortisolism.

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

Integrity signals

Registry

Crossref · 10.1210/jc.2014-3007

Cites

48 of 48 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Verification

Claims the paper makes

0 of 44 cited sources checked · 0 supported · 0 flagged

Show all 34 claims

  • It may state two separate claims as one. 26
  • Probably not a substantial claim. 26
  • The quote only partly states this claim. 1
44 of 44
  • The paper relies on this without support.

    Death certificates accurately identify the underlying cause of death.

    “The primary cause of death was ascertained from death certificates obtained from the General Register Office in the United Kingdom so that all-cause and cause-specific mortality could be determined.”
    “Death certificates were coded using the 10th revision of the International Classification of Disease (ICD-10).”
  • The paper relies on this without support.

    Patients lost to follow-up do not differ systematically in mortality risk from those included in the final analysis.

    “In addition, 21 patients were lost to follow-up.The final survival analysis was carried out on 206 patients (primary analysis).”
  • The paper relies on this without support.

    Local and national mortality data are comparable to the study cohort.

    “The cause-specific mortality in the adrenal incidentaloma patients was compared with local incidence figures in 2010 obtained from the Sheffield Director of Public Health Report, 2011 (18).”
  • The paper relies on this without support.

    A single baseline overnight dexamethasone suppression test adequately classifies long-term cortisol exposure for mortality risk.

    “Only a baseline overnight dexamethasone suppression test is carried out in our unit (although we do acknowledge that in some cases post-dexamethasone cortisol levels may worsen (10) or normalize (22) on followup).”
  • The paper relies on this without support.

    The cohort of patients referred to a single UK endocrine unit is representative of patients with adrenal incidentalomas generally.

    “A retrospective, longitudinal, cohort study was performed on a consecutive series of 272 patients diagnosed with adrenal incidentalomas between January 2005 and July 2013, and referred to the Endocrine Investigation Unit, Royal Hallamshire Hospital, Sheffield Teaching Hospitals National Health Service Foun-dation Trust, Sheffield, United Kingdom, a University Hospital.”
  • The paper relies on this without support.

    The association between post-dexamethasone cortisol category and mortality is not due to unmeasured confounding.

    “When adjusting for age the relationship between postdexamethasone cortisol category and mortality remained identical.”
  • The paper relies on this without support.

    The life expectancy at birth of the general population is a valid comparator for the age at death of patients with adrenal incidentalomas.

    “In addition, the age of death for patients with adrenal incidentalomas was lower than the life expectancy at birth of the general population (men/women, 74/72 vs 78/82 y) (18).”
  • The paper relies on this without support.

    The recorded causes of death accurately reflect the underlying causes.

    “Graphs show a higher rate of mortality from circulatory and infective/respiratory (resp) causes in the adrenal incidentaloma group of patients between January 2005 and July 2013.”
8 of 8

Claims other papers make about this one

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Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

  • Endocrine Society guideline cites the wrong reference

    Minor

    The text attributes the cortisol cutoff to Endocrine Society guidelines numbered (20), but reference 20 is a patient follow-up study. The reference list identifies the Endocrine Society guideline as reference 18.

  • Local mortality data cite an unrelated reference

    Minor

    The cited reference 18 is an Endocrine Society guideline, not the Sheffield Director of Public Health Report named in the text.

2 of 2

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Metadata

Authors
Debono, M., Bradburn, M., Bull, M., Harrison, B., Ross, R. J., & Newell-Price, J.
Affiliations
  • National Health Service (GB)
  • University of Sheffield (GB)
Corresponding author
Newell-Price, John
Venue
The Journal of Clinical Endocrinology & Metabolism
Published
2014-12
Volume
99
Issue
12
Pages
4462-4470
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
OpenAlex
W1968633315
Cited by
269
References
53
Citations by year
2026: 21 · 2025: 15 · 2024: 18 · 2023: 23 · 2022: 30 · 2021: 35 · 2020: 26 · 2019: 22 · 2018: 24 · 2017: 22 · 2016: 18 · 2015: 15
FWCI
18.05
Type
journal article
Language
en
Open access
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute for Health and Care Research (CL-2013-04-001, BRF-2011-005)
Topics
  • Health Sciences › Medicine › Surgery › Adrenal and Paraganglionic Tumors
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Pituitary Gland Disorders and Treatments
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
Keywords
adrenal incidentaloma, adrenal adenoma, cortisol, mortality, dexamethasone suppression test, hypercortisolism, Cushing's syndrome, survival, cardiovascular disease, infection
MeSH terms
Adrenal Cortex Neoplasms, Adrenal Gland Neoplasms, Aged, Aged, 80 and over, Dexamethasone, Female, Humans, Hydrocortisone, Longitudinal Studies, Male, Middle Aged, Retrospective Studies, Cohort Studies, Biomarkers, Survival Analysis

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