Hypoglycemia following bilateral adrenalectomy for pheochromocytoma

Severe hypoglycemia with delayed emergence occurred in a 12-yr-old boy following bilateral adrenalectomy for pheochromocytoma. Hypoglycemia after resection of pheochromocytoma may be due to release of insulin from the beta cells of the pancreas due to sudden withdrawal of catecholamines. Beta blockade with the use of propranolol impairs both hepatic glucose production and glucagon secretion mechanism. For early detection and treatment of hypoglycemia, perioperative blood glucose monitoring is important in patients undergoing adrenalectomy for pheochromocytoma.