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根据世界卫生组织的肿瘤统计资料,近年来全世界每年死于癌症者约有690万人,新发病例870万,现患3,710万。不论是发达国家或发展中国家,癌症已成为5岁以上人口中前三位的死亡原因。1982年上海市区恶性肿瘤新诊断病例为14,402例,死亡10,574例,死亡率为175.2/10万/年,占全部死亡人数的27％,居各类死因的第二位。说明恶性肿瘤已是威胁人类健康的重要问题之一。恶性肿瘤的防治研究包括:(1)肿瘤流行病学和肿瘤生物学;(2)肿瘤的Ⅰ级预防,即控制或消除肿瘤的病因或阻断其致癌途径;(3)肿瘤的Ⅱ级预防,
According to the World Health Organization’s cancer statistics, in recent years, approximately 6.9 million people have died of cancer each year in the world, with 8.7 million new cases and 37.1 million people suffering from cancer. In both developed and developing countries, cancer has become the top three cause of death among people over 5 years of age. In 1982, there were 14,402 newly diagnosed cases of malignant tumors in Shanghai, 10,574 deaths, and a mortality rate of 175.2 per 100,000 person-years, accounting for 27% of all deaths, ranking second in all causes of death. It shows that malignant tumors are one of the important issues that threaten human health. The prevention and treatment of malignant tumors include: (1) tumor epidemiology and tumor biology; (2) tumor grade I prevention, which controls or eliminates the etiology of tumors or blocks their carcinogenic pathways; (3) tumor secondary prevention ,