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本文就我院１９７７年９月～１９９４年６月经纤维结肠镜检出，病理证实的６１２例大肠癌患者，分成三个年代组进行青年组和中老年组对照研究。结果显示：当今大肠癌的发病率呈上升之势；性别差异在年龄方面愈来愈不明显；临床表现主要决定于癌肿部位，与患者年龄无明显关系；直肠仍是大肠癌最好发的部位，右半结肠癌也并非少见；除直肠和盲肠外的左半结肠癌中老年组多于青年组，右半结肠癌则青年组多于中老年组。
In this paper, 612 patients with colorectal cancer, which were detected by fiber colonoscopy from September 1977 to June 1994 in our hospital, were divided into three age groups for controlled studies in the young and middle-aged groups. The results showed that the incidence of colorectal cancer is on the rise. The gender difference is getting less and less obvious in age. The clinical manifestations are mainly determined by the location of cancer and have no obvious relationship with the patient’s age. The rectum is still the best colorectal cancer. Site, right colon cancer is not uncommon; in the left colon cancer except the rectum and the cecum, the middle-aged and elderly patients have more than the young patients, and the right colon cancer patients have more young patients than the middle-aged patients.