men and anus, and was admitted to the emergency room. At admission, his blood pressure was 120/70 mmHg, pulse rate was 74/minute, respiratory rate was 20/minute, and body temperature was 36.6C. On physical examination, the abdomen was slightly distended and bowel sounds were decreased. He was examined mild to moderate direct tenderness diffused from the low abdomen, but no rebound tenderness. H...
