In medicine, the ileal pouch–anal anastomosis (IPAA), also known as an<unk> , restorative proctocolectomy, ileal-anal pullthrough, or sometimes referred to as a j-pouch, s-pouch, w-pouch or an internal pouch, is an anastomosis of the ileum to the anus, bypassing the former site of the colon in cases where the colon has been removed. It retains or restores functionality of the anus, with stools passed under voluntary control of the patient, preventing fecal incontinence and serving as an alternative to<unk> stomy. The pouch component is a surgically constructed intestinal reservoir; usually situated near where the rectum would normally be. It is formed by folding loops of small intestine (the ileum) back on themselves and stitching or stapling them together. The internal walls are then removed thus forming a reservoir. The reservoir is then stitched or stapled into the perineum where the rectum was. A similar ileal pouch without the<unk>  anastomosis is a Kock pouch.
Ileo-anal pouch
Cecal bascule
Album graecum
Kock pouch
Indiana pouch
Collyrium
Cryptocotyle
Genu varum