Cited by 63Sexual Differentiation and DisordersAdrenal Hormones and DisordersAdrenal and Paraganglionic Tumors

Congenital adrenal hyperplasia due to 21-hydroxylase deficiency presenting as adrenal incidentaloma: a systematic review and meta-analysis

Falhammar, Henrik, Torpy, David J.·2016·Endocrine Practice

Abstract

Objective Adrenal incidentalomas (AIs) may be due to congenital adrenal hyperplasia (CAH) due to homozygous CYP21A2 mutations, or perhaps from heterozygous carrier status. It is unclear if genetic or biochemical testing of CYP21A2 status in AI is justified, despite its potential for avoiding adrenal crises in those referred for adrenalectomy. Methods We systematically searched PubMed/MEDLINE for articles published up to October 19, 2015 containing all terms associated with adrenal tumors and CAH. Meta-analyses were used to estimate the CAH or carrier prevalence in AI and assess clinical factors that may guide testing. Results Thirty-six publications were included. Of AI patients biochemically screened for CAH, 58/990 (5.9%) were diagnosed with CAH. Genetic screening of all AIs revealed only 2/252 (0.8%) with clear CAH. The carrier prevalence was 10.2% (36/352). The rate of 0.8% (8/1,000) genetically confirmed CAH is higher than the 1/15,000 affected by classic CAH or 1/1,000 by nonclassic CAH in the Caucasian population. The rate of heterozygous CYP21A2 mutation frequency is similar to those in reported in population studies. Levels of both basal and stimulated 17-hydroxyprogesterone positively correlated with AI diameter. Although bilateral incidentalomata were frequent in CAH, their presence did not predict CYP21A2 status. Conclusion The presence of an AI does not increase the probability of detection of CAH or CYP21A2 carrier status to the extent routine genetic testing is justified. Screening with 17-hydroxyprogesterone levels appears to lack specificity in the setting of an AI. CYP21A2 mutation analysis is probably the only reliable method for CAH diagnosis in AIs. Abbreviations ACC = adrenocortical carcinoma ACTH = adrenocorticotropic hormone AI = adrenal incidentaloma CAH = congenital adrenal hyperplasia NCAH = nonclassic congenital adrenal hyperplasia 17OHP = 17-hydroxyprogesterone SV = simple virilizing.

Integrity signals

Registry

Crossref · 10.4158/ep151085.ra

Cites

71 of 71 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

6 of the 77 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Falhammar, H., & Torpy, D. J.
Affiliations
  • Karolinska University Hospital (SE)
  • Royal Adelaide Hospital (AU)
Corresponding author
Falhammar, Henrik
Venue
Endocrine Practice
Publisher
Elsevier BV
Published
2016-06
Volume
22
Issue
6
Pages
736-752
ISSN
1530-891X (ISSN-L)
OpenAlex
W2310234141
Cited by
63
References
77
Citations by year
2026: 6 · 2025: 4 · 2024: 8 · 2023: 3 · 2022: 8 · 2021: 8 · 2020: 4 · 2019: 4 · 2018: 9 · 2017: 3 · 2016: 5
FWCI
0.63
Type
journal article
Language
en
Open access
closed
Locations
  • Endocrine Practice (publishedVersion)
  • PubMed (publishedVersion)
  • Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion)
Funders
Magnus Bergvalls Stiftelse
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Sexual Differentiation and Disorders
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
  • Health Sciences › Medicine › Surgery › Adrenal and Paraganglionic Tumors
Keywords
congenital adrenal hyperplasia, 21-hydroxylase deficiency, CYP21A2 mutations, adrenal incidentaloma, adrenal tumors, 17-hydroxyprogesterone, genetic testing, adrenal crisis, adrenalectomy, non-classical congenital adrenal hyperplasia

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.

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