【摘要】 目的 探讨患者血清中糖链抗原50(CA50)、癌胚抗原(CEA)含量联合检测对肺癌、肺结核的诊断和鉴别诊断的临床价值。 方法 用放射免疫分析法和免疫放射分析法检测了112例肺癌和200例肺结核患者血清中CA50、CEA的含量，并用100例正常人血清做对照。 结果 发现两者在肺癌组明显高于肺结核组，肺结核组又高于正常人组。 结论 血清中CA50、CEA两项指标联合应用可提高诊断肺癌的阳性率。

    关键词 糖链抗原50 癌胚抗原 肺癌 诊断

    Expression and value in differential diagnosis of serum CA50，CEA of pulmonary carcinoma and tuberculosis

    Cheng Chun，Liu Shoulan

    The Central Hospital of Changsha，Changsha410004.

    【Abstract】 Objective To assess the value of CA50and CEA in serum to the diagnosis and differentiate of pulmonary carcinoma and tuberculosis.Methods By using RIA，CA50and CEA were detected in patients with pul-monary carcinoma and tuberculosis ......