UNSUSPECTED URETEROCELE AND URETERAL DUPLICATION - ABSTRACTS

Four patients presenting with high grade unilateral vesicoureteral ref lux were discovered at surgery to have an unsuspected duplex system wi th a ureterocele associated with the upper pole of the refluxing kidne y. No preoperative radiographic study was diagnostic for duplication o r ureterocele but when studies were reviewed retrospectively subtle ev idence suggesting this possibility could be identified in a few cases. This rare situation should be considered whenever massive unilateral vesicoureteral reflux is encountered.