Nonfunctioning adrenal masses: incidental discovery on computed tomography.

Sixteen adrenal masses were identified with computed tomography (CT) in patients who had no clinical or biochemical evidence of adrenal pathology. In five patients, an adrenalectomy was performed, disclosing either an adenoma or nodular hyperplasia. Autopsy disclosed a cortical adenoma in one patient who died from unrelated causes. In the remaining 10 patients, follow-up scans 4--16 months later revealed no change in the size of the masses. A management plan of nonfunctioning adrenal masses discovered incidentally on CT is proposed.