The experience with a continent urinary diversion in patients with dysfunction of the lower urinary tract is reported. The right detubularized colonic segment was used as urinary reservoir and an intussucepted ileal valve as outlet. Thirty seven patients were studied with a mean followup of 37 months. All patients except one were continent with a well-functioning diversion. The kidney function was not reduced in any of the patients and the acid-base balance was within normal limits. Twelve patients (32%) had had complications resulting in surgical revision. The majority were simple corrections, but 3 patients experienced a spontaneous perforation of the reservoir needing emergency laparotomy.