Giant colon diverticulum: clinical and imaging findings in 17 patients with emphasis on CT criteria

PurposeThe purpose of the study was to review the clinical and radiologic features of giant colonic diverticulum (GCD).MethodsMedical records of 17 patients with GCD on computed tomographic (CT) examination were reviewed.ResultsCT examination revealed the GCD in all patients as a predominantly gas-filled structure communicating with the adjacent colon. Thirteen patients showed a gas-filled structure on abdominal radiograph. The mean GCD diameter was 7 cm. Most diverticula were found in the sigmoid colon. Associated diverticulosis was present in 71% of patients.ConclusionOur experience suggests that GCD can often be diagnosed on the basis of the characteristic radiographic and CT findings in these patients.