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Bowel frequency and urge incontinence, the major weaknesses of classical ureterosigmoidostomy, can be overcome by detubularization of the rectum. As the modified procedure is quick, safe and easy to perform with highly satisfactory results, the rectosigmoid pouch has potential in reconstructive urology.

In situ appendix and intussuscepted ileal valve techniques are satisfactory in providing ileocecal reservoir continence. Besides the known advantages of the appendix as the primary reconstructive approach, the treatment of subsequent complications is simple. Therefore, whenever an appropriate appendix is encountered it should be the intestinal segment of choice in forming a continence mechanism.

This is one of the largest single series reported to date of renal transplantation into continent urinary diversions, and we commend the approach in carefully selected patients, but the difficulties must not be underestimated and the specific problems of intestinal urinary reservoirs have to be reckoned with. These procedures should be confined to centers with considerable experience with this type of surgery and its complications. Lifelong close surveillance is critical for the success of this concept.