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大肠癌是严重威胁人类健康的常见恶性肿瘤之一。近30年来,大肠癌的发病率呈上升趋势。1993年Parkin等报道,1985年全世界各种癌症共有新发病例数1762万,其中大肠癌67.8万,占8.9％,为第四位常见癌症。1985年中国新发病例152.33万,其中大肠癌9.12万,占6.0％,为第五位常见癌症。将1985年数字与Parkin等的1980年数字相比,5年之中全世界每年大肠癌新发病例增加18.4％。中国则增加14.3％。近10年来,大肠癌已成为西方工业化国家第二位的高发肿瘤,而在上海市区也上升为第三位常见肿
Colorectal cancer is one of the common malignant tumors that seriously threaten human health. In the past 30 years, the incidence of colorectal cancer has increased. In 1993, Parkin et al. reported that in 1985, there were a total of 17.62 million cases of new cancers in the world, of which 678,000 were colorectal cancers, accounting for 8.9%, and were the fourth most common cancer. In 1985, there were 1.5233 million new cases in China, of which 91,200 were colorectal cancers, accounting for 6.0%, and were the fifth most common cancer. Comparing the 1985 figures with the 1980 figures of Parkin et al., the annual incidence of new colorectal cancers in the world increased by 18.4% during the five years. China increased by 14.3%. In the past 10 years, colorectal cancer has become the second most frequent tumor in industrialized countries in the West, and it has also risen to the third most common tumor in Shanghai.