Ileo-anal pouch

The Ileo-anal pouch, also known as the J-pouch, S-pouch, or W-pouch, is a surgically constructed internal reservoir; typically crafted from the end of the small intestine, the ileum. It is designed to hold and pass intestinal waste, replacing the function of the removed rectum and anus.

Pronunciation

Ileo-anal pouch: /ˈɪli.oʊ ˈeɪnəl paʊtʃ/

Etymology

The term "Ileo-anal pouch" is derived from the words "ileum" (the third portion of the small intestine) and "anal" (pertaining to the anus). The word "pouch" is used to describe the sac-like structure created during the procedure.

Procedure

The procedure to create an ileo-anal pouch, known as Ileal pouch-anal anastomosis (IPAA), is typically performed in patients with conditions such as Ulcerative colitis or Familial adenomatous polyposis (FAP) where the large intestine is removed. The pouch serves as a new rectum, providing a way for the body to store and pass waste.

Related Terms

Ileum: The third portion of the small intestine, between the jejunum and the cecum.
Anus: The opening at the end of the alimentary canal through which solid waste matter leaves the body.
Ileal pouch-anal anastomosis (IPAA): A surgical procedure to create an ileo-anal pouch.
Ulcerative colitis: A chronic, inflammatory bowel disease that causes inflammation in the digestive tract.
Familial adenomatous polyposis (FAP): A rare, inherited condition that causes extra tissue (polyps) to form in your large intestine (colon) and rectum.