Ureteric diverticula: ureterodiverticular reflux and yo-yo effect. A television study with spot filming

Two cases of ureteric diverticulum are presented. Repeated infective episodes were the main presenting features in one, whereas intermittent attacks of colicky pain brought the other patient in for clinical assessment. Fluoroscopic evaluation of the latter patient demonstrated free ureterodiverticular reflux and yo-yo phenomenon. Following diverticulectomy the pain completely disappeared.