慢性肺部疾病的基础上并发肺癌时，前者临床症状常掩盖后者，使肺癌的早期诊断困难，常致误诊漏诊。本文分析1991年1月至1995年12月收住院的慢性肺部疾病合并肺癌212例，旨在提高对慢性肺部疾病合并肺癌时的早期诊断。1临床资料1．1一般资料212例，男165例，女47例，男：女之比 When chronic lung disease is complicated by lung cancer, clinical symptoms of the former often cover the latter, making early diagnosis of lung cancer difficult, often resulting in misdiagnosis and missed diagnosis. This article analyzes 212 patients with chronic lung disease and lung cancer who were hospitalized between January 1991 and December 1995 to improve the early diagnosis of chronic lung disease with lung cancer. 1 Clinical data 1.1 General information 212 cases, male 165 cases, female 47 cases, male to female ratio