Pancreatic neuroendocrine tumor with hypoglycemia and elevated insulin-like growth factor II: a case report

Abstract

Pancreatic neuroendocrine tumors (pNETs) can be associated with different clinical syndromes. Insulinoma is the most common functioning pNET characterized by hypoglycemia and hyperinsulinemia. The authors report a case of a man presenting with hypoglycemia and biochemical features of insulinoma. A pancreatic lesion was found and growth hormone (GH) deficiency was also diagnosed associated with an empty sella present on the pituitary magnetic resonance imaging. The disappearance of hypoglycemia and normalization of GH secretion after surgical resection of the pancreatic lesion, revealed a rare pNET secreting insulin-like growth factor II.