What tissue is used to create an ileal conduit?

• A. A piece of ileum
• B. A piece of colon
• C. A piece of stomach
• D. A piece of jejunum

Answer: (A)

A segment of ileum is used to create an ileal conduit to channel urine from the ureters to a stoma on the abdomen. The ileum is chosen because it provides a reliable, well-vascularized conduit that can be isolated from the rest of the bowel while preserving intestinal continuity. Its caliber and mobility make it practical to form a durable, catheterizable channel, and it tolerates exposure to urine well enough for long-term use. Using tissue from other parts of the GI tract would bring more complications: the colon has more mucus and bacteria, the stomach is not compatible with urine and can ulcerate, and the jejunum is not as ideal as the ileum for forming a stable conduit.