38. 關於PNEUMATOSIS COLI（PNEUMATOSIS CYSTOIDES INTESTINALIS） 何者正確？
(A) This uncommon disorder is characterized by multiple gas-filled cysts, which are located in the mucosa and serosa of the intestine. 
(B) The frequency of pneumatosis coli is highest in the fourth decades with equal frequency among men and women.  
(C) The most common symptoms are diarrhea (68%), mucus discharge (68%), rectal bleeding (60%), and constipation (48%).  
(D) A plain abdominal film may identify radiopaque clusters with or without pneumoperitoneum. 

(E) 以上皆是