The massively dilated ureter is one of major therapeutic challenges that face the urologists. The goals of reconstructive procedures are the elimination of residual urine, effective ureteral peristalsis, efficient and/or urgent drainage. 6 cases of primary obstructive megaureter were presented with review of literatures. The results obtained were as follows ; 1. 6 cases were divided into 2 groups according to etiology with 4 adynamic segments and 2 intrinsic stenosis. 2. The underlying histopathologic features included 1 submucosal inflammation,2 submucosal fibrosis with inflammation and 2 submucosal fibrosis. 3. 5 cases were treated with Hendren's technique and 1 case treated by ureteral meatotomy. 4. All cases showed obvious improvement of upper tract without complication during follow-up period from 5 to 26 months.
Constriction, Pathologic ; Drainage ; Fibrosis ; Follow-Up Studies ; Inflammation ; Peristalsis ; Ureter