Objective: To study the value of serum carcinoembryonic antigen (CEA) and carbohydrate antigens (CA15-3, CA19-9 and CA125) in staging, metastasis and prognosis of patients with lung cancer.

• 摘要目的：探讨肺癌患者外周血癌胚抗原(CEA)、糖类抗原(CA19-9、CA125、CA15-3)水平与肿瘤分期、转移及预后的关系。