A Rare Cause of Adrenal Mass: Adrenocortical Oncocytoma

Adrenocortical oncocytomas are extremely rare, usually incidentally detected tumors that are thought to have low malignant potential. The number of reported cases in the literature is below 200. These tumors are frequently non-functional and do not secrete hormones, but cases of oncocytoma causing hypertension, Cushing syndrome, and virilization have also been reported. Imaging methods are insufficient for diagnosis, and a definitive diagnosis can only be made after a histopathological examination of the adrenalectomy specimen. Here, we present the imaging and histopathological features of an adrenal mass in a 46-year-old woman who presented with left renal colic.