Pheochromocytoma-ganglioneuroma of the adrenal.

Composite adrenal tumors composed of both pheochromocytoma and ganglioneuroma are rare. To our knowledge, only two cases have been reported previously, displaying symptoms referable, in the first case to vasoactive intestinal polypeptide production and, in the second case, to catecholamine production. We report a case of composite pheochromocytoma-ganglioneuroma associated with renal angiomyolipoma and elevated urinary and serum catecholamine levels. Light and electron microscopic findings are described.