Gonadotroph Adenoma with Secondary Hypersecretion of Testosterone

Gonadotroph adenomas are considered a type of nonfunctioning pituitary tumors, because the commonly associated increase in serum FSH and LH does not typically result in elevated sex hormone levels. Herein, we report a rare case of high testosterone level caused by a gonadotroph adenoma successfully treated with transsphenoidal resection. Interestingly, in adult males, the increase in sex hormones does not seem to lead to a recognizable clinical syndrome, and the clinical presentation remains similar to that of nonfunctioning adenomas.