Mitrofanoff is what type of urinary diversion?

• A. Continent diversion
• B. Incontinent diversion
• C. External diversion
• D. No diversion

Answer: (A)

Mitrofanoff creates a catheterizable urinary conduit that provides a continent diversion. It typically uses the appendix (appendicovesicostomy) to connect the bladder to the abdominal wall, often at a presentable site like the umbilicus. The patient self-catheterizes through this stoma to empty the bladder on a schedule, and the continence mechanism of the channel keeps urine from leaking between catheterizations, so no external bag is needed. This stands in contrast to incontinent diversions, such as an ileal conduit, where urine drains continuously into a collection bag. In some cases, the appendix isn’t available and a segment of bowel can be used, but the defining feature remains a continent, catheterizable route.