[Pyeloureteral stenosis: its treatment by endopyelotomy].

Percutaneous endopyelotomy is becoming widely accepted in the treatment of primary or secondary stenosis of the ureteropelvic junction because it achieves excellent results and is less invasive. Herein we describe our experience with this technique, which we perform with the electric knife and large caliber ureteral stents. Seventeen endopyelotomy procedures were performed in 16 patients with a minimum follow-up of one year. This technique successfully resolved the stenosis in 14 cases. We consider it to be the procedure of choice due to the excellent results and the low complication rate.