Thumbprinting in Ischemic Colitis- Contrast-enhanced computed tomography of the abdomen, performed to evaluate the possibility of complicated diverticular disease, revealed edema of the sigmoid colon with thumbprinting — a finding that results from the haustra of the large bowel becoming thickened and projecting into the intestinal lumen at regular intervals. This radiographic sign can be seen in ischemic colitis, pseudomembranous colitis, and other types of infectious colitis, as well as in exacerbations of inflammatory bowel disease. The patient’s stool tested negative for Clostridium difficile toxin. The findings on rectosigmoidoscopy were consistent with a diagnosis of ischemic colitis. #ischemic #colitis #clinical #radiology #CT #thumbprinting #sign #NEJM
