A 12-year-old with galactorrhea is presented. He was in early puberty, had gynecomastia, and was markedly obese. Roentgenograms of the skull showed an asymmetrically enlarged sella trucica, but pneumoencephalography did not indicate suprasellar extension of the pituitary tumor. Preoperative studies of anterior pituitary function were normal except for persistent hyperprolactinemia. By transsphenoidal approach, a microadenoma of the pituitary was removed. Lactation ceased within a week, and four months postoperatively the patient had normal anterior pituitary function studies. A review of the literature indicates that galactorrhea in males is very rare. The most frequently documented cause, excluding drug ingestion, is a pituitary tumor.
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