Ulcerative colitis. Barium enema x-ray of colon Ulcerative colitis. Barium enema x-ray of colon. Note shortening of colon, loss of haustral markings (“lead pipe” appearance), and fine serrations at the edges of the bowel wall that represent multiple small ulcers. Source: Large Intestine, CURRENT Diagnosis & Treatment: Surgery, 14e Citation: Doherty GM. CURRENT Diagnosis & Treatment: Surgery, 14e; 2015 Available at: https://accessmedicine.mhmedical.com/DownloadImage.aspx?image=/data/Books/1202/doh_ch30_f017.png&sec=71522972&BookID=1202&ChapterSecID=71522614&imagename= Accessed: November 03, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved