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癌症是人类的大敌。我国每年癌症新发病患者约一百三十万人。全世界的数字大约是我国的五倍。治癌的原则是:最大限度地清除癌细胞,同时最大限度地减少对健康组织的损伤。常用的治疗癌症的方法有三类:外科手术、放疗和化疗。它们各有优劣:外科开刀要输血,病人大伤元气,有些部位还不宜开刀,癌细胞也可能还有残留,引起复发;化疗常用毒药,甚至需换血,对病人健康损害很大;放疗通常用X射线、γ射线或电子束,也可使大量健康组织细胞受损
Cancer is the enemy of mankind. About 1.3 million people are newly diagnosed each year in our country. The world’s figure is about five times that of our country. The principle of cancer treatment is: to maximize the clearance of cancer cells, while minimizing damage to healthy tissue. There are three common ways to treat cancer: surgery, radiotherapy and chemotherapy. They have their own merits: surgery to transfusions, the patient was hurt, some parts are not surgery, cancer cells may also have residual, causing relapse; chemotherapy commonly used poisons, and even need to change blood, a great harm to the patient’s health; radiotherapy usually A large number of healthy tissue cells can also be damaged by X-rays, gamma rays or electron beams