[Percutaneous endo-retro-pyelotomy: an elective treatment method in stenosis of the uretero-pelvic junction].

Fifteen adult patients diagnosed as having congenital stricture of the ureteropelvic junction were treated by percutaneous endoureteropyelotomy. Our results were clinically satisfactory in 85.7% (excellent acured 57.1%, good/with occasional mild discomfort 28.5%). Radiologically, 64.2% were normal and 14.2% had mild ectasia but good renal function. No clinical improvement was observed in 14.2% and 21.4% had persistent hydronephrosis indicating the procedure had failed. The most important complication was intraoperative hemorrhage from effraction of an inferior polar artery which required a conventional lumbotomy procedure and Anderson-Hynes pyeloplasty. The foregoing results, with the limitations inherent in data from a small series, indicate that endoureteropyelotomy is the procedure of choice in the treatment of congenital UPJ strictures in the adult patient.