[Neonatal intravaginal testicular torsion in an undescended testis].

We report a case of intravaginal testicular torsion with an unusual debut in a 30 day old patient which had undescended testis. We emphasize the need of a complete physical exploration of the child that go to the emergency service with inspecific symptoms of abdominal pain, and supposing the hemiscrotum was empty, is essential to reject a torsion of a cryptorchidic testicle. An immediate surgery is necessary in order to diagnose and treat this disturbance.