Comparison of Safety and Efficacy of Detaenial Sigmoid Neobladder and Ileal Neobladder

The serosal layer with smooth muscle was detached from a 15 cm sigmoid segment submucosal layer and removed continuously. Only the mucosal and submucosal layers were preserved. Approximately 2 cm of the taeniae and serosal layer were preserved to strengthen the urethra-neobladder anastomosis at the central portion of the isolated sigmoid and at the two ends for the ureter-neobladder anastomosis. The ureters were subsequently implanted in antirefluxing fashion in a submucosal tunnel. The ureter-neobladder anastomoses were protected with a 6Fr Single J® stent. The two ends of the sigmoid were closed with the embedded seromuscular layer. The neobladder was anastomosed to the urethra after that.

The isolated 70 cm terminal ileum segment is arranged in either an M or W shape and is opened along the antimesenteric border except for a 5 cm section where the incision is curved to make a U-shaped flap. The four limbs of the M or W are then sutured to one another with a running absorbable suture. A small full-thickness segment of bowel is excised for the urethral anastomosis. Once the ileal neobladder is situated and the urethral sutures are tied, the ureters are implanted from inside the neobladder through a small incision in the ileum. The remaining portion of the anterior wall is then closed with a running absorbable suture. Ureteroileal anastomosis were performed with a freely refluxing, open end-to-side method at each end of the W.