Results The chief causes of LGB in the eldly we re as follows:rectal or colonic carcinoma (444cases,29.5%),rectal or colonic polyps(363cased,24.1%)and anorectal disease(201cases,13.3%).

 
  • 1507例患者中,检出率最高为结肠癌444例,占29。5%25,其次为结肠息肉363例,占24。1%25,第三为肛管疾病201例,13。3%25及炎症性肠病89例(5。9%25)等。
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