The serum CA_(125),CEA and NES are of great value in differentiation diagnosis of lung benign from malignant disease,with CA_(199)inadvisable as a tumor marker.

• 肿瘤标志物CA125、CEA、N SE在肺部良、恶性病变的鉴别诊断中有意义。 CA199不宜作为肺癌的肿瘤标志物临床应用。