患者 ,男 ,80岁。以反复腹痛、腹泻 2 0余天为主诉 ,于1998年 11月 2 5日入院。2 0余天来无诱因出现腹痛 ,局限于脐周 ,呈阵发性闷痛 ,每次持续 5～ 15分钟 ,排便后可缓解。疼痛未涉及他处 ,与饮食、体位变化无明显关系。每日排 4～ 5次稀糊样便 ,每次量约 5 0 g,带酸臭味 ,无 Patient, male, 80 years old. With repeated abdominal pain and diarrhea for more than 20 days as the main complaint, she was admitted to hospital on November 25, 1998. More than 20 days, there was no inducement of abdominal pain, which was limited to the umbilical cord. It presented paroxysmal menstrual pain, which lasted 5 to 15 minutes each time and was relieved after defecation. The pain did not involve him elsewhere, and there was no obvious relationship between diet and body position changes. Daily 4 to 5 dilute paste samples, each weighing about 50 g, with acid odor, no