Teenager with abdominal pain Pediatric Imaging Gastrointestinal July 7, 2021May 21, 2021 AXR AP from a barium enema (left) shows the loss of haustral markings in the colon (lead pipe sign). The magnified view (right) suggests the presence of multiple fine mucosal ulcerations. The diagnosis was ulcerative colitis. Related Published July 7, 2021May 21, 2021