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为探讨体外放射分析法在良、恶性胸水鉴别诊断中的价值，本文对６９例胸腔积液患者胸水中的ＣＡ５０、ＣＡ１２５、ＣＥＡ、Ｆｅｒ含量进行了分析。结果显示：它们对癌性胸水具有早期诊断及鉴别诊断价值，其含量与结核性胸水比较有显著差异（Ｐ＜０００１）。本文认为早期测定胸水中的ＣＡ５０、ＣＡ１２５、ＣＥＡ、Ｆｅｒ含量，对癌性胸水与结核性胸水的诊断及鉴别诊断有重要作用。
In order to explore the value of extracorporeal radiometric analysis in the differential diagnosis of benign and malignant pleural effusion, the contents of CA50, CA125, CEA and Fer in pleural effusion of 69 patients with pleural effusion were analyzed. The results showed that they have the value of early diagnosis and differential diagnosis of cancerous pleural effusion, and their contents are significantly different from tuberculous pleural effusion (P <0001). This paper suggests that the early determination of pleural fluid CA50, CA125, CEA, Fer content of cancerous pleural effusion and tuberculous pleural effusion diagnosis and differential diagnosis plays an important role.