2025 Volume 67 Issue 9 Pages 1436-1442
A 27-year-old woman visited the emergency department with a chief complaint of right lower abdominal pain. CT revealed an intussusception in the ascending colon, with no discernible tumor in the leading portion. Fluoroscopic-guided total colonoscopy revealed that the leading portion was formed by the edematous cecum, which was rapidly reduced by insufflation through an endoscope. No tumor was detected in the cecum, but the findings indicated colitis with reddish edematous mucosa accompanied by several erosions. Enterohemorrhagic Escherichia coli (EHEC) O-157 was detected in stool cultures obtained during colonoscopy; thus, the final diagnosis was EHEC colitis-induced intussusception. Endoscopic intervention enabled the reduction of intussusception and rapid diagnosis of colitis without a tumor.
