Most incidentally found adrenal tumours are non-functioning, regardless of age, study finds

The prevalence of adrenal tumours in an unselected community population is 1.4%, a large Chinese study of more than 25 000 adults has found. However, 70% of these tumours are benign and non-functioning regardless of the patient’s age, meaning they did not make extra hormones.The prevalence of adrenal incidentaloma increased with age, from 0.2% in adults aged 18 to 25 up to 3.2% in adults over 65, according to the study published in Annals of Internal Medicine.1The detection of adrenal incidentalomas—incidentally found adrenal nodules that are not causing clinical symptoms—has increased in recent years. These are being detected more frequently in an ageing population through the increased use of computed tomography (CT) and magnetic resonance imaging scans with enhanced resolution.Most published literature on the prevalence of adrenal incidentalomas consists, however, of retrospective surveys which might under or overestimate prevalence.This new study investigated the prevalence of adrenal tumours in 25 356…
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