[Endopyelotomy: 6 years of experience].

From January, 1988 to December, 1993, we have performed 35 percutaneous endopyelotomy procedures; 100 had acquired and 25 had congenital stricture. The UPJ was cut posterolaterally with an electric device in 34 cases. The mean follow up was 45.6 months. There were 6 failures (17.1%) that were resolved with the Anderson-Hynes technique (5 cases) and nephrectomy (1 case). There was 1 intraoperative complication (2.86%), a lesion to the accessory inferior pole artery that required open surgery. However, 80% of the cases were successfully treated by endourological techniques.