Radiology

Radiology

A plain abdominal film may indicate the severity of disease in the acute setting and is particularly valuable in demonstrating May o score named after the Mayo Clinic, R ochester MN, USA. been replaced by CT , although a contrast study will show a featureless colon. CT findings in pancolitis may show signif - icant thickening of the colonic wall, as well as inflammator y stranding in the colonic mesentery ( Figure 75.5 ).

TABLE 75.2 Scoring system for assessment of ulcerative colitis activity. Finding Stool frequency Sub- Rectal bleeding score Normal 0 None 1 or 2 more than 1 Streaks of blood <50% normal of the time 3 or 4 more than 2 Obvious blood >50% of normal the time 5+ more than 3 normal Blood alone passed Adapted from Schroeder KW, Tremaine WJ, Ilstrup DM. Coated oral 5-aminosalicylic acid therapy for mildly to moderately active ulcerative colitis. N Engl J Med 1987; 317 (26): 1625–9.