[Myelolipoma of the adrenal gland: a case report].

A case of myelolipoma of the adrenal gland is reported. The patient was a 50-year-old male who was obese and robust, and complained of right flank pain. Laboratory investigation of adrenal functions were within normal levels. Excretory urography showed a large radiolucent mass in the right upper quadrant, displacing the right kidney to a lower position. Angiography demonstrated a large hypovascular mass. CT scan showed a large mass with low density in the right retroperitoneal space. The tumor was surgically removed through a lumbar incision, and was 800 gm in weight and well capsulated. A pathological study of the tumor disclosed adrenal myelolipoma consisting of mature fat cells and myeloid elements. Myelolipoma of the adrenal gland is rare and 33 cases of adrenal myelolipoma from the English and Japanese literature including this case were reviewed and analyzed statistically.