吸烟与肺鳞癌的密切关系已屡见报道。但对吸烟与肺腺癌的关系说法不一。许多作者认为,吸烟与肺腺癌存在一定联系,但联系性远较肺鳞癌弱;相反,有些研究反映吸烟与肺腺癌间无联系性。还有人认为吸烟与肺鳞、腺癌的联系性强度无差异。为了阐明这两种主要的组织学类型肺癌与吸 The close relationship between smoking and lung squamous cell carcinoma has been reported frequently. However, there are different opinions about the relationship between smoking and lung adenocarcinoma. Many authors believe that there is a link between smoking and lung adenocarcinoma, but the association is far weaker than lung squamous cell carcinoma; on the contrary, some studies have shown that there is no connection between smoking and lung adenocarcinoma. Others believe there is no difference in the strength of the association between smoking and lung scales and adenocarcinoma. To elucidate these two major histological types of lung cancer and smoking