In some patients with Crohn's disease a procedure called an [[ileoanal anastomosis]] is done if the disease affects the entire colon and rectum, but leaves the anus unscathedunaffected (e.g- Crohn's diseas). In this procedure, the entire large intestine and rectum is surgically removed, and the ileum is then stitched to the anus to allow fecal matter to go through the ileum just as it did when the patient had a large intestine. This procedure requires a temporary loop ileostomy to allow the anastomosis to heal. With lifestyle adjustments, those who have had this procedure for their Crohn's disease can resume normal bowel movements without artificial appliances. <ref name=":0">{{Cite web|url=https://www.niddk.nih.gov/health-information/digestive-diseases/ostomy-surgery-bowel|title=Ostomy Surgery of the Bowel {{!}} NIDDK|website=National Institute of Diabetes and Digestive and Kidney Diseases|language=en-US|access-date=2019-10-23}}</ref>
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