38. 關於PNEUMATOSIS COLI（PNEUMATOSIS CYSTOIDES INTESTINALIS）何者正確？ (A) This uncommon disorder is characterized by multiple gas-filled cysts, which (B) The frequency of pneumatosis coli is highest in the fourth decades with (C) The most common symptoms are diarrhea (68%), mucus discharge (68%), (D) A plain abdominal film may identify radiopaque clusters with or without (E) 以上皆是