Muangnoo et al reported factors associated with a functional incidental adrenal mass. This can make the diagnosis of a functioning incidentaloma more efficient. The authors are from Chiang Mai University in Thailand.
Patient selection: adrenal incidentaloma
Prevalence of incidentalomas that are functioning: 10-15%
A functioning incidentaloma may produce either catecholamines or glucocorticoids.
Predictors of a functioning incidentaloma:
(1) history of hypertension (OR 2.7)
(2) mass size > 4 cm (OR 2.2)
(3) Hounsfield units (HU) < 10 (OR 2.5)
The greater the number of predictors present, the greater the risk of functioning.
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