Teenager with right lower quadrant pain and fever

CT and small bowel followthrough of Crohn disease of the terminal ileum and cecum
Axial CT with intravenous and oral contrast of the abdomen (above) shows marked thickening of the wall of the cecum and narrowing of the lumen of the cecum. Images of the terminal ileum from an upper GI and small bowel follow through exam (below) show luminal narrowing and nodularity giving a cobblestone appearance along with mucosal ulcerations.

The diagnosis was Crohn disease affecting the terminal ileum and cecum.