论文部分内容阅读
矽肺与肺癌有无联系,国际上近年来议论颇多。1972年以来,动物实验证实大白鼠注入游离二氧化矽后发生肺癌者占30％左古,但对照组也有8％;此外,雌性大白鼠占19％而雄性只占2％,而且仓鼠及小鼠都是阴性。二氧化矽与苯并芘一起注入,发生肺癌者可达44％。流行病学调查证实,肺癌患病率最高者是同时吸入多环芳烃的铸造工及冶金工,尤其是吸烟者。单纯吸入矽尘者,肺癌的相对危险度不一定增加。 在矽肺纤维化的基础上可发生瘢痕癌,二者的病灶在一起,属非特异性变化且很罕见。
There is no connection between silicosis and lung cancer. There are many discussions in the world in recent years. Since 1972, animal experiments confirmed that mice injected with free silica after lung cancer accounted for 30% of the ancient left, but the control group also has 8%; In addition, 19% of female rats and males only 2%, and hamsters and small Rats are negative. Silicas injected with benzopyrene, lung cancer up to 44%. Epidemiological survey confirmed that the highest prevalence of lung cancer is the simultaneous inhalation of PAHs foundry and metallurgical workers, especially smokers. Pure inhalation of the dust, the relative risk of lung cancer does not necessarily increase. Scar cancer can occur on the basis of silicotic fibrosis, both of which together, are nonspecific and rare.