Surgical correction of caudal duplication.

The authors report the rare case of a dipygus monster. The infant had an omphalocele, a secondary pelvis with two limbs, an accessory pelvic kidney, and two bladders. At operation, the secondary pelvis and extremities were removed, and the omphalocele was repaired. The postoperative course was complicated by wound infection, urinary infections, proteinuria, cardiomegaly, and hypertension of renovascular origin. The infant died after right nephrectomy, 5 mo after the first operation.