Pouchitis is a complication that may occur after having J-pouch surgery. It's when a pouch made during the surgery becomes red and swollen (inflamed).
J-pouch surgery helps treat conditions like Crohn's disease and ulcerative colitis. During this procedure, a person's colon and rectum are removed. A surgeon then replaces the rectum with a manmade pouch. The surgeon makes the pouch from the ileum. The ileum is the last part of the small intestine.
The pouch is shaped like the letter J. It works like the rectum. It holds waste until it leaves the body through the anus. After the surgery, the lining of the pouch may become inflamed. This is pouchitis.