Torsion of an undescended intraabdominal benign testicular teratoma.

A 4-year-old well boy was seen because of an asymptomatic left testicle undescended since birth; the testis was not palpable and the right side was normal. After an episode of left lower quadrant and left hip area pain, with some bladder symptoms and left leg limping, a work-up including a CAT scan showed a calcified retroperitoneal pelvic tumor on the left side. At laparotomy, an infarcted mass was found in the pelvis just above the internal ring. It was a torsion of an undescended intraabdominal testis with a benign testicular teratoma. The tumor was removed and his recovery was uneventful.