Ileostomies may be performed for multiple reasons including temporarily diverting the stream of intestinal contents in patients with surgery involving the more distal small bowel or colon. Removal of the colon may necessitate creation of a permanent stoma. Everting the distal end of the ileum and bringing it through the anterior abdominal wall creates a permanent stoma. Various abnormalities of the stoma may include adhesions, prolapse (Fig. 5.34), parastomal herniation, and recurrent disease (especially Crohn's disease) at the stomal site.
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