Even with medicines and lifestyle changes, you may need surgery to treat your Inflammatory Bowel Disease (IBD). For Crohn\’s, surgery may be needed to treat fistulas, life-threatening bleeding, obstructions, or other symptoms that don\’t improve with medication. For ulcerative colitis (UC), surgery may be needed to treat colorectal cancer; precancerous cells that increase the risk for developing colorectal cancer; or life-threatening complications such as severe rectal bleeding, toxic megacolon, or perforation of the large intestine.