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一、发病概况随着近代医学和其他领域内科学技术的发展,人类中许多传染病得到了有效的防治,癌症就显得愈来愈突出了。它已成为当代严重威胁人类生命和健康的疾病之一。据全世界每年的死亡统计报道,肿瘤的死亡者占总死亡人数的12～25%。美国1979年仅因肠癌死亡的就有52,000人。日本1977年癌症死亡率男性是148.7/10万,女性是108.7/10万。胃癌死亡率占癌症总死亡率的第一位。近年来,随着饮食结构的改变和电冰箱的普遍使用,日本胃癌发病率在逐年下降,但结肠癌、乳腺癌及子宫颈癌的发病率却有上升的倾向。世界上不同国家癌症出现的类型是互不相同的,特别在区域分布方面更是有着显著的差异。例
First, the incidence profile With the development of modern medicine and other fields of science and technology, many infectious diseases in humans have been effectively controlled, the cancer becomes more and more prominent. It has become one of the most serious diseases that threaten human life and health in contemporary times. According to the statistics of deaths worldwide each year, cancer deaths account for 12% to 25% of the total deaths. In 1979, the United States alone had 52,000 deaths from colorectal cancer. Cancer deaths in Japan in 1977 were 148.7 per 100,000 women and 108.7 per 100,000 women. Gastric cancer mortality accounts for the first cancer death rate. In recent years, with the change of dietary structure and the widespread use of refrigerators, the incidence of gastric cancer in Japan is declining year by year, but the incidence of colon cancer, breast cancer and cervical cancer tends to increase. The types of cancer in different countries in the world are different from each other, especially in the area of distribution is more significant difference. example