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对114例原发性肺癌患者联合检测了血清唾液酸（SA）和癌胚抗原（CEA），阳性率分别是84．2％和60％，明显高于对照组。若两项联合检测，则可将肺癌诊断阳性率提高到93％。结果提示：SA和CEA联合检测是一种较好的诊断肺癌的辅助手段。
The serum sialic acid (SA) and carcinoembryonic antigen (CEA) levels were detected in 114 patients with primary lung cancer. The positive rates were 84.2% and 60%, respectively, which were significantly higher than those in the control group. If the two combined tests can increase the positive rate of lung cancer diagnosis to 93%. The results suggest that the combined detection of SA and CEA is a good aid for diagnosing lung cancer.