病历摘要刘某,男性,44岁,因反复腹痛、便血一年半,于1980年1月7日入院。患者一年半前开始阵发性左腹隐痛,大便带“脓”,偶尔带血,按肠炎治疗三个月,症状好转。近半年又有左腹隐痛,无一定规律,大便有时带暗红色血,呈节段状混于大便之中,服消炎药无效。四天前钡灌肠检查,发现结肠 Summary of medical records Liu Mou, 44 years old, admitted to hospital on January 7, 1980 due to repeated abdominal pain and hematochezia for a year and a half. One and a half years ago, the patient started paroxysmal left abdominal pain, with “pus” and occasionally with blood. After three months of treatment with enteritis, the symptoms improved. In the past half a year, there was pain in the left abdomen. There was no definite pattern. The stool sometimes had dark red blood. It was mixed in the segment and was in the stool. The anti-inflammatory drugs were ineffective. Four days ago barium enema examination and found colon