Last revised by Ashesh Ishwarlal Ranchod on 25 May 2024

Ileovesicostomy (also known as "cutaneous ileocystostomy", "ileal chimney", or "bladder chimney") is an uncommon urologic diversion in which a loop of small bowel is anastomosed/augmented to the dome of the bladder. This loop of bowel then exits through a urostomy. The diversion is not continent.

The procedure is indicated for severe neurogenic bladder dysfunction or intractable lower urinary tract obstruction. Complete cystectomy with ileal loop diversion or neobladder formation is indicated for bladder cancer.

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