Abstract
A case of a 58-year-old woman with multiple retroperitoneal pheochromocytoma is reported. She complained hot flush for 3 years, had been medicated for hypertention after toxemia of pregnancy and was incidentally pointed out a retroperitoneal tumor by abdominal ultrasonography at health examination before admission. The blood pressure at admission was 190/120mmHg and the value of noradrenalin in serum and urine was extreamly high. CT and MRI showed two tumors within the retroperitoneal cavity around the abdominal aorta. So the tumors were diagnosed as multiple pheochromocytomas. During operation, soon after resection of the tumors, blood pressure was immediately down, but it was recovered by blood transfusion. After operation blood pressure has been good control and 10 days after serum noradrenalin level was within normal limit.