Abstract
背景与目的血清乳酸脱氢酶（lactate dehydrogenase, LDH）浓度升高，会导致小细胞肺癌、肺腺癌患者预后不佳，但其与大细胞神经内分泌肺癌（lung large-cell neuroendocrine carcinoma, L-LCNEC）患者预后的关系并不清楚，本研究旨在探讨L-LCNEC患者术前血清LDH浓度、术后LDH浓度变化趋势对患者术后无病生存期（disease-free survival, DFS）的影响，从而为判断L-LCNEC的临床预后提供新的思路。方法本研究共纳入49例L-LCNEC术后患者，通过医疗记录、电话随访获取患者的临床资料。应用受试者操作特征曲线确定术前LDH的最佳临界值。用Kaplan-Meier绘制生存曲线。应用Cox比例风险模型计算独立预后因素。结果术前血清LDH最佳临界值分别为195.5 U/L。生存曲线显示，术前血清LDH高浓度、术后LDH浓度升高的患者术后DFS缩短（P < 0.001, P < 0.001）。多因素分析显示，术前LDH浓度、术后LDH浓度变化趋势是L-LCNEC患者术后DFS的独立预后因素（P < 0.001, P=0.037）。结论L-LCNEC患者术前LDH浓度及其术后浓度变化趋势是患者DFS的独立预后因素，术前高浓度、术后浓度升高会导致患者DFS缩短，预后差，应及早进行干预治疗。
Published Version
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