Pseudomembranous colitis: diagnosis by computed tomography

Although the diagnosis of pseudomembranous colitis is generally straightforward in the appropriate clinical setting, patients may manifest clinical symptoms more suggestive of abdominal infection than of intestinal disease. Because these patients may have computed tomography (CT) as their first examination, it becomes important to recognize colonic changes that may reflect the presence of pseudomembranous colitis. We present two cases of this entity diagnosed by CT findings.