许多国家的医学者早在20～30年以前就已经查明吸烟对肺癌的发生有着非常重要的作用,这在近年来的研究也得到证实。但是在临床上也见到从来不吸烟的肺癌病人,作者在最近15年期间(1967～1982),详细地研究了吸烟及其强度和肺癌发病率之间的相互关系,并且查明发病率与病人的性别有很大差别:女性肺癌病人(800多例)吸烟与不吸烟的比例为1∶1;而男 Medical scientists in many countries have identified as early as 20 to 30 years ago that smoking has a very important role in the development of lung cancer, which has also been confirmed in recent years. However, lung cancer patients who have never smoked are also seen clinically. The author has studied in detail the relationship between smoking and its intensity and the incidence of lung cancer in the last 15 years (from 1967 to 1982), and identified the incidence and There is a big difference in the gender of the patients: female lung cancer patients (more than 800 cases) have a 1:1 ratio of smoking to non-smoking;