To discuss the diagnostic value of serum CEA and CA125 for primary lung cancer.
【目的】探讨血清癌胚抗原（CEA）、糖类抗原-125（CA125）对原发性肺癌的诊断价值。
Multiple primary cancer of the lung and other organs is rare.
肺和其他器官的多发性原发性癌较罕见，国内迄今报告不多。
Incident lung cancer was the primary endpoint of the study.
偶发的肺癌是该研究的主要终点。
Incident lung cancer was the primary endpoint of the study.
偶发的肺癌是该研究的主要终点。
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