Nonfunctioning Adrenal Pheochromocytoma Incidentally Discovered Associated with Renal Oncocytoma
Pheochromocytoma (PHEO), a rare catecholamine-producing tumor, is a disease entity with variable clinical
manifestations. The classic triad of symptoms are palpitations, headaches, and diaphoresis, but the signs and
symptoms are wide ranging and mainly reflect the hemodynamic and metabolic actions of the catecholamines
produced and secreted by the tumor. We describe the rare case of a patient affected by nonfunctioning and
asymptomatic PHEO associated with the incidental discovery of renal oncocytoma, and review the literature.