Persistent Müllerian duct structures in cryptorchid male infants: surgical dilemmas.

Persistent Müllerian duct structures were found in 3 male cryptorchid infants aged 10--12 mo, during correction of a unilateral inguinal hernia. Division of the vas degerens, hysterectomy and scrotal orchidopexy were carried out. The authors believe that in subjects with a persistent müllerian duct syndrome, surgical placement of the testes into the scrotum should be performed. This is, as a rule, not possible without damage to the vas deferens which runs parallel and adheres closely to the surface of the uterus.