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目的探讨老年患者胃液中TNFα、CA199和CA724联合检测对胃癌的诊断意义。方法采用放射免疫技术测定42例胃癌、30例浅表性胃炎和31例胃癌前病变的老年患者胃液中TNFα、CA199和CA724浓度。结果胃癌组胃液中TNFα、CA199和CA724的浓度分别显著高于浅表性胃炎组、胃癌前病变组(8.96±2.10)ng/ml vs(5.66±1.65)ng/ml,(4.92±1.24)ng/ml;(59.47±10.58)U/ml vs(38.73±9.