Abstract
Myelolipoma of the adrenal gland is a rare, benign and nonfunctioning tumor which consists of hematopoietic and adipose tissues. We report a 46-year-old male patient with left adrenal myeloipoma associated with hypertension, hyperlipidemia and obesity. The initial symptom was left upper abdominal pain, which took place suddenly and was very severe. Abdominal computed tomographic scanning showed a round tumor, 12cm in diameter, located between spleen and left kidney as if it connected to the tail of pancreas. The tumor had a low density area in it. Further suspicion of pheocromocytoma was arisen and endocrinological examination revealed a transient elevation of noradrenarin in serum and urine. The symptom and endocrinological abnormality disappeared before surgery. The resected tumor was 18×11×11cm in size, 620g in weight and contained old blood. Histopathological diangosis was adrenal myelolipoma. And the initial symptom was considered to be caused by massive hemorrhage within the tumor.