What procedure uses a segment of ileum for urine diversion?

The procedure that utilizes a segment of ileum for urine diversion is the ileal conduit. This surgical technique involves taking a portion of the ileum, which is the final part of the small intestine, and fashioning it into a conduit for the purpose of directing urine from the ureters to an external stoma on the abdomen.

In a typical scenario, after the bladder has been removed (due to conditions like cancer), the ureters are attached to the ileal segment. This segment then leads outside the body, allowing urine to be excreted through an external collection device. This approach is favored because it effectively manages urinary diversion while maintaining a relatively straightforward post-operative care requirement.

Other procedures listed in the options serve different functions or utilize different anatomical segments. This differentiation is important for understanding surgical indications and outcomes in urologic care.