患者女性,30岁。1984年6月下旬出现肛门胀痛,逐日加重影响工作。8月初在某医院按内痔治疗,用枯痔液注射2次,治疗后肛门疼痛加剧。10月初开始出现肛门坠胀感,大便条变细,但无便血。12月在某医院再次检查,发现直肠后壁肿物转入我院。查体:一般情况好,腹部未发现异常。肛门指诊,直肠左后壁可触及肿物,中等硬,横径约4cm, Female patient, 30 years old. Anal pain occurred in late June 1984, increasing the impact of work every day. At the beginning of August, she was treated with internal hemorrhoids in a hospital and injected with alum fluid twice. After the treatment, the anal pain became worse. In early October, an anal bulge began to appear and the stools became thinner, but there was no blood in the stool. In December, she was examined again in a hospital and found that the rectal wall mass was transferred to our hospital. Physical examination: In general, no abnormalities were found in the abdomen. Anal diagnosis, rectal left posterior wall palpable mass, moderate hard, transverse diameter of about 4cm,