论文部分内容阅读
接触石棉的工人中,发生职业性肺癌的事实,已为人们所熟知。大量吸入石棉尘,经过很长的潜伏期(平均25左右),往往在石棉肺的基础上并发肺癌。英国曾报导,石棉肺死亡者中,60%以上伴有支气管及胸膜的癌变。同时指出,石棉工人肺和胸膜肿瘤的发病率(2年以上严重接触组)是一般居民的28倍。当然由于各种类型石棉的物理性质和化学组成上的不同,它们的致癌潜力也是有所区别的。接触温石棉的男工,其呼吸道癌
The fact that occupational lung cancer occurs among workers exposed to asbestos is well known. Inhalation of asbestos dust in large quantities, after a long incubation period (average 25 or so), is often associated with lung cancer on the basis of asbestosis. The United Kingdom has reported that more than 60% of asbestos-lung deaths are accompanied by canceration of the bronchi and pleura. At the same time, it is pointed out that the incidence of lung and pleural tumors in asbestos workers (more than 2 years of severe contact group) is 28 times that of the general population. Of course, due to the different physical properties and chemical composition of various types of asbestos, their carcinogenic potential is also different. Male workers exposed to chrysotile, respiratory cancer