Characteristics and use of the in situ appendix as a continent catheterization stoma for continent urinary diversion in adults.

Use of the in situ appendix to provide continence was evaluated in 21 adults undergoing continent urinary diversion. The appendix with minimal or no manipulation was used in 20 of the 21 adults to provide the continence mechanism. Our findings indicate that in the majority of adults with no prior appendectomy the unaltered or minimally altered appendix is suitable to provide continence, and that dilating a narrow appendix is safe, effective and compatible with providing an adequate continence mechanism.