Background: Hot flushes are common in menopausal women and also in men made acutely hypogonadal after orchiectomy or testicular injury. It is, however, an unusual symptom in patients with hypogonadism secondary to pituitary tumors.
Methods: In evaluating the histories of men with hypogonadal state associated with nonfunctioning pituitary macroadenoma we were struck by the presence of hot flushes in four of them.
Results: All four of the patients were hypogonadal with sexual dysfunction preoperatively. All had low gonadotropins and low testosterone levels with varying degrees of panhypopituitarism. All had successful transsphenoidal removal of tumors. None had endocrine improvement following surgery. All patients had improvement in sexual function and the hot flushes with administration of testosterone postoperatively.
Conclusions: Hot flushes are an uncommon presentation in men with pituitary adenoma. Perhaps the symptom will become more prominent if it is specifically questioned. We postulate that the cause of the flushing is related to nonsuppressed pulsatile secretion of gonadotropin-releasing hormone (GnRH) from the hypothalamus.
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