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癌瘤是严重威胁人民健康和生命的常见多发病,世界卫生组织曾将癌症、心血管病和环境污染列为医学三大课题。据估计,世界每年死于癌症的约200～300万人,并有升高趋势。癌症在我国某些地区已居死因的第一位。 近年来,国内外对肿瘤病因研究都很重视,希望从病因学中找出线索,以开展预防措施。 胃癌发病也有地区差异,如日本、智利、冰岛、苏联及我国某些地区胃癌高发,但不是种族差异,如
Cancer is a common disease that seriously threatens people’s health and life. The World Health Organization has listed cancer, cardiovascular disease and environmental pollution as three major medical topics. It is estimated that the world’s annual death rate from cancer is about 2 to 3 million people, and there is an increasing trend. Cancer has been the first cause of death in some areas of our country. In recent years, both at home and abroad have attached great importance to the study of tumor etiology. We hope to find clues from the etiology to carry out preventive measures. There are also regional differences in the incidence of gastric cancer, such as high incidence of gastric cancer in Japan, Chile, Iceland, the Soviet Union, and certain parts of China, but not ethnic differences, such as