A case of multiple extra-adrenal pheochromocytomas.

A case report of a 37-year-old previously healthy man who contracted hypertension and insulin-dependent diabetes mellitus. Urinary catecholamine excretion was elevated. A total of nine benign pheochromocytomas with characteristic histological appearance were successfully removed. Most of the tumors were located extra-adrenally in the upper abdomen and in the pelvis. Two of the tumors were found in organ plexuses in the mesocolon sigmoideum and in the anterior wall of prostata. Because of asynchronous tumor growth a life-long follow-up is recommended.