血清CEA或CYFRA21-1在手术前及术后均高于正常,尤其是两者联合在手术前及术后均升高的NSCLC患者预后不良。手术前后血清CEA、CYFRA21-1的检测有助于NSCLC患者术后预后的判断。. This evidence concerns the gene CEACAM5 and non-small cell lung carcinoma.