Indian Journal of Endocrinology and Metabolism

ORIGINAL ARTICLE
Year
: 2019  |  Volume : 23  |  Issue : 3  |  Page : 332--346

Nonfunctioning and subclinical cortisol secreting adrenal incidentalomas and their association with metabolic syndrome: A systematic review


Uzma Khan 
 Department of Diabetes and Endocrinology, University Hospitals Coventry and Warwickshire NHS Trust, Clifford Bridge Rd, Coventry, West Midlands, U.K. Post Code- CV2 2DX, UK

Correspondence Address:
Uzma Khan
120 Blandford Drive, Coventry, West Midlands, U.K. Post Code - CV2 2NE
UK

Background: A growing body of evidence suggests that nonfunctioning and subclinical cortisol secreting adrenal incidentalomas (AIs) are associated with several components of metabolic syndrome resulting in increased cardiometabolic risk. The long-term metabolic outcome of these AIs is largely unknown and their most appropriate management remains controversial. Objectives: To undertake a systematic review of the prevalence of cardiometabolic abnormalities in nonfunctioning and subclinical cortisol secreting AIs and long-term outcome of conservative treatment and adrenalectomy. Methods: MEDLINE, Cochrane Controlled Trials Register, and EMBASE were searched for relevant studies and systematic review was performed. National Institutes of Health (NIH) quality assessment tool for observational cohort and cross-sectional studies was used to assess the risk of bias in the studies. Results: Of the 65 studies screened, 18 (10 retrospective, 5 prospective, 2 cross-sectional studies, and 1 randomized controlled trial) were included in the systematic review. Prevalence of hypertension (HTN), impaired glucose metabolism, dyslipidaemia, and raised body mass index (BMI) was higher in subclinical cortisol secreting AIs as compared with nonfunctioning AIs. Surgical intervention had a beneficial effect on blood pressure, glucometabolic control, and obesity in patients with subclinical Cushing's syndrome. The results for lipid metabolism were equivocal. There was no significant improvement in cardiometabolic risk factors after adrenalectomy in nonfunctioning AIs. The quality of evidence was found to be low to moderate. Conclusions: The systematic review demonstrated increased prevalence of components of metabolic syndrome in patients with subclinical cortisol secreting and nonfunctioning AIs. A beneficial role of adrenalectomy on HTN, glucometabolic control, and BMI was observed in patients with subclinical cortisol secreting AIs.


How to cite this article:
Khan U. Nonfunctioning and subclinical cortisol secreting adrenal incidentalomas and their association with metabolic syndrome: A systematic review.Indian J Endocr Metab 2019;23:332-346


How to cite this URL:
Khan U. Nonfunctioning and subclinical cortisol secreting adrenal incidentalomas and their association with metabolic syndrome: A systematic review. Indian J Endocr Metab [serial online] 2019 [cited 2020 Aug 10 ];23:332-346
Available from: http://www.ijem.in/article.asp?issn=2230-8210;year=2019;volume=23;issue=3;spage=332;epage=346;aulast=Khan;type=0