Objective: To discuss the significance of CEA, CA125, CA211, NSE in bronchoalveolar lavage fluid (BALF) in diagnosis, pathology type and stage of lung cancer.

• 摘要目的：探讨肺癌患者支气管肺泡灌洗液(BALF)中CEA、CA125、CA211、NSE浓度对肺癌的诊断、病理分型及分期的意义。