(perineal pouch) a reservoir made from loops of ileum to replace a surgically removed rectum, avoiding the need for a permanent *ileostomy. This is commonly constructed in patients who have had their colon surgically removed for various disorders (e.g. ulcerative colitis or familial adenomatous polyposis).
a segment of small intestine (ileum) used to convey urine from the ureters to the exterior into an appliance (see also urinary diversion). The ureters are implanted into an isolated segment of bowel, usually ileum but sometimes sigmoid colon, one end of which is brought through the abdominal wall to the skin surface. This end forms a spout, or stoma, which projects into a suitable urinary appliance. The ureters themselves cannot be used for this purpose as they tend to narrow and retract if brought through the skin. The operation is performed if the bladder has to be removed or bypassed; for example, because of cancer.... ileal conduit
n. 1. (in anatomy) a small sac-like structure, especially occurring as an outgrowth of a larger structure. The pouch of Douglas is a pouch of peritoneum occupying the space between the rectum and uterus. 2. (in surgery) a sac created from a loop of intestine and used to replace a section of rectum that has been surgically removed, for example in the treatment of ulcerative colitis (see ileal pouch), or to replace the bladder after *cystectomy.... pouch
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