Abstract
Endopyeloureterotomy and transluminal balloon dilation were performed on 18 children with primary or secondary ureteropelvic junction obstruction (UPJO) or ureteral stricture. For postoperative evaluation, an excretory urogram was obtained 3 to 6 months after removal of the stent. The clinical success rates by the procedure were as follows : endopyelotomy on 12 patients with UPJO 9/12(75%), balloon dilation on 2 patients with UPJO 0/2(0%), endoureterotomy on 2 patients with ureteral stricture 2/2(100%), and balloon dilation on 2 patients with ureteral stricture 1/2(50%). One pyelotomized patient whose hydronephrosis had progressed was treated surgically 2 months after removal of the stent. Complications were observed only in pyelotomized patients (pyelonephritis 2, transient ureteral edema 2, and blood transfusion 1). Endopyeloureterotomy is an effective option for the treatment of primary or secondary UPJO and other ureteral strictures in children
