Ileal pouch with an umbilical stoma: a continent mechanism created by the extramural tunnel technique.

We present an initial experience of creating an extramural continent valve in the ileal pouch in 4 patients who required continent urinary diversion. Using the appendix or a tapered ileal segment, the continent valve was created by the extramural tunnel technique along the anterior suture line of the pouch to facilitate the umbilical anastomosis. All patients were continent postoperatively with easy catheterization. This technique can provide a simple and effective continent pouch formed entirely from the ileum.