[Hydronephrosis caused by congenital stenosis of the ureteropelvic junction. Hynes-Anderson technic].

The need for the routine use of indwelling ureteral stents in the repair of congenital stenosis of the ureteropelvic junction by the Hynes-Anderson operation is not clearly established. The authors feel that it is indicated only in cases presenting severe parenchymal lesions. The indwelling stents can originate different complications, which may be detrimental for the outcome of the operation, in both the short and long term.