Inguinal hernia repair leading to the diagnosis of internal male pseudohermaphroditism.

Surgical hernia repair in an apparently normal man leaded to the diagnosis of internal male pseudohermaphroditism after removal of a cystic structure which proved to be a remnant of the Müllerian duct on microscopic examination. The diagnosis was confirmed at explorative laparotomy in search of the second testicle. The terminology of the condition is reviewed and the therapeutic attitude is discussed.