[Pyeloureterostomy in stenosis of the pyeloureteral junction of an incomplete collecting system]

The possible solutions to a case of ureteral duplication complicated by obstruction of one of the collecting systems are reviewed.We report an uncommon case of ureteropelvic junction obstruction in the lower system of an incomplete duplication of the collecting systems that was resolved by pyeloureterostomy.Anastomosis of the lower renal pelvis to the upper ureter may provide a simple solution for the functional recovery of an important renal segment.