癌症的发病率近年来逐步增加,近10年来增加更为明显。椐WHO1996年统计,全世界每年新患癌症患者有1030万人,每年死于癌症600万人,预计2020年每年新发生癌症患者可达1470万人。90年代初,我国每年新患癌症约160万人,死于癌症者约130万人,现有癌症患者约300万人[1]。随着社会的进步 The incidence of cancer gradually increased in recent years, the increase in the past 10 years more obvious. WHO’s 1996 survey shows that there are 10.3 million new cancer patients in the world each year, 6 million people die each year from cancer and 14.7 million new cancer patients are expected each year in 2020. In the early 1990s, China suffered about 1.6 million new cancers each year, about 1.3 million people died of cancer and about 3 million cancer patients. [1] with the development of the society