Ischemia

Ischemia – Thumb-printing sign The above images demonstrate the “thumb-printing” sign typical of colonic ischemia. It is most notable in the transverse colon on the left image, and the transverse and descending colon on the right image. [Courtesy of...

Colon Cancer

Colon Cancer – Napkin ring sign The differential diagnosis for the “napkin ring” sign as presented above includes: 1) TB of colon, 2) carcinoma of colon, 3) metastasis, 4) diverticular stricture, 5) endometriosis, 6) ischemic stricture, 7)...