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总结直肠癌的临床特征及探讨中下段直肠癌手术方式的选择。回顾分析１９９１年１月～１９９６年１２月外科治疗直肠癌２１０例，随访不同手术方式的治疗效果。统计学处理采用率和Ｘ２检验。直肠癌发病年龄中位数４５岁，Ａｓｔｌｅｒ－Ｃｏｌｅｒ分期Ｂ、Ｃ分别为５８．４％、２８．９％。中、下段直肠癌分别占４０％、４９．５％。保肛手术和Ｍｉｌｅｓ术疗效无显著性差异（Ｐ＞０．０５）。我国的直肠癌中青年患者较多，多位于直肠中下段，早期就诊病例较少。中下段直肠癌保肛手术疗效肯定，选择保肛手术时重要的是重视肿瘤的生物学特征。
Summarize the clinical features of rectal cancer and explore the choice of mid-lower rectal cancer surgery. Retrospective analysis of the surgical treatment of rectal cancer from January 1991 to December 1996, 210 cases, follow-up treatment of different surgical methods. Statistical processing adoption rate and X2 test. The median age of onset of rectal cancer was 45 years, and the Astler-Coler stages B and C were 58.4% and 28.9%, respectively. The rectal cancer in the middle and lower segments accounted for 40% and 49.5%, respectively. There was no significant difference in efficacy between sphincter preservation surgery and Miles operation (P>0.05). There are many young and middle-aged patients with rectal cancer in China, mostly in the middle and lower rectum, and there are fewer cases of early diagnosis and treatment. The efficacy of sphincter preserving rectal cancer in the middle and lower rectal cancer is certain. When choosing an anal operation, it is important to pay attention to the biological characteristics of the tumor.