Fig. 8

A 65-year-old female with ulcerative colitis, initially investigated with water-soluble contrast enema, shows a “water-pipe” appearance of shortened, narrow left colon with advanced haustral loss (a). After medical treatment, elective WE-MDCT was performed because of incomplete colonoscopy. Discrete, circumferential mural thickening is observed from the rectum to the splenic flexure (arrowheads), corresponding to endoscopic severe disease, with confirmation of several millimetric pseudopolyps (thin arrows) throughout the descending tract. Markedly increased vascularity is seen in the proliferating perirectal and pericolonic fat planes (*). Most of the transverse and right colon appear to be spared