患者女,16岁,1982年6月30日住院。四年前(12岁)开始便血,未介意。近二年排便时直肠脱出并有大小不等肿物,便血量增加,排便困难,全身乏力,无腹痛、恶心、呕吐。未接受过治疗。家族史:其父55岁,36岁时出现便血,四年后于外院检查发现直肠多发息肉,行直肠息肉摘除。术后二年,症状复发,再次经直肠摘 The female patient, aged 16, was hospitalized on June 30, 1982. Bloody stools began four years ago (12 years old) and did not mind. In the last two years, the bowel recuperated during the bowel movements and there were masses of different sizes. As a result, blood volume increased, defecation was difficult, the body was weak, and there was no abdominal pain, nausea, and vomiting. Not treated. Family history: His father was 55 years old and he had bloody stools at the age of 36. After four years in an outpatient examination, he found polyps in the rectum and removed rectal polyps. Two years after surgery, symptoms recur and rectal rectum