Sexual precocity in a boy due to hypersecretion of LH and prolactin by a pituitary adenoma.

The paper reports on precocious puberty and galactorrhoea in a 4 8/12 year old boy. Roentgenograms of the skull showed slight lateral bulging of sella floor and pneumoencephalography indicated a pituitary adenoma with a suprasellar extension. Pre-operative study of anterior pituitary function was normal except for increased values of LH (900 mIU/ml), testosterone (2000 ng/ml) and prolactin (215 ng/ml). After removal of a chromophobe pituitary adenoma by transfrontal surgery the galactorrhoea disappeared within 10 days. Post-operative endocrine evaluation showed immediate normalization of LH, testosterone and prolactin values.