Colonoscopy Image of Ulcerative Colitis (IMAGE) Washington University School of Medicine Caption This image from a colonoscopy shows a section of the bowel affected with severe ulcerative colitis. Credit Washington University School of Medicine Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.