论文部分内容阅读
癌症是严重威胁人类健康的常见多发病,据统计,全世界每年至少有900万人发生患癌,700万人死于癌。最新资料表明,在我国,癌症死亡占全部死亡原因的比例已由50年代初期的第10位跃为90年代的第2位。 现代生命科学研究发现:即使在人体健康的细胞中也有致癌的遗传因子,这就说我们每个人都有患癌症的可能。 癌症的历史可追溯到人类出现之前,美国的戈得曼教授认为,1.4亿年以前,一条恐龙有一处骨骼部位所呈现的拳头大小的卷心菜形状的异常物,实际上就是癌症,这是史前癌症的第一证据。 癌,最令人可怕之处是它的转移特征。不过,当原发癌转移到机体其他部位时,往往要经历数月甚至数年的休眠期。有些患者就是在这个时期接受手术治疗得以良好预后的。于是,人们便以为手术治疗是治疗癌症的最佳选择。
Cancer is a common and frequently-occurring disease that seriously threatens human health. According to statistics, at least 9 million people worldwide suffer from cancer each year, and 7 million people die from cancer. According to the latest information, in China, the proportion of cancer deaths to all causes of death has jumped from the 10th in the early 1950s to the 2nd in the 90s. Modern life science research finds that even in human health cells, there are carcinogenic genetic factors, which means that each of us has the possibility of cancer. The history of cancer can be traced back to before the advent of mankind. Prof. Goldman of the United States believes that 140 million years ago, a dinosaur had a fist-sized cabbage-shaped anomaly on a skeletal site. It was actually cancer. This is prehistoric cancer. The first evidence. The most terrifying aspect of cancer is its metastatic character. However, when the primary cancer metastasizes to other parts of the body, it usually takes several months or even years of dormancy. Some patients undergo surgical treatment during this period and have a good prognosis. Thus, people think that surgical treatment is the best choice for cancer treatment.