前言肿瘤,是危害人类健康的常见病、多发病,我国最近在包括八亿五千万人口的广大地区中调查了自1973年到1975年三年中全部恶性肿瘤死亡者病例,调查情况表明,恶性肿瘤死亡人数占死亡原因的第三位,估计每年约有一百万人发生恶性肿瘤,死亡率高达70%,世界卫生组织公布的一些国家死因统计的结果表明;在某些国家和地区,死于肿瘤的人数仅次于冠心病和脑血管病,居第二位;而在另一些国家和地区,肿瘤是引起死亡的第一位原因.由于肿瘤对人类健康的严重危害,早日认识肿瘤,进而征服肿瘤已成为当 Foreword Tumor is a common and frequently-occurring disease that threatens human health. China recently investigated all cases of malignant tumor deaths from 1973 to 1975 in a vast area of ​​850 million people. The survey shows that The death rate of malignant tumors accounts for the third cause of death. It is estimated that about one million people have malignant tumors each year, and the mortality rate is as high as 70%. The results of death statistics published by the World Health Organization show that in some countries and regions, The number of people who die from cancer is second only to coronary heart disease and cerebrovascular disease, while in other countries and regions, tumors are the leading cause of death. Because of the serious harm to human health, early recognition of cancer , and then conquering the tumor has become