非小细胞肺癌同期放化疗后重度急性放射性肺炎的预测因素

被引:24
作者
王谨 [1 ]
庄婷婷 [2 ]
何智纯 [1 ]
彭芳 [1 ]
马红莲 [1 ]
周琦超 [1 ]
张黎 [1 ]
何振宇 [1 ]
包勇 [1 ]
邓小武 [1 ]
陈明 [1 ]
机构
[1] 华南肿瘤学国家重点实验室
关键词
肺肿瘤/放射疗法; 放射疗法,三维适形; 放射性肺炎; 剂量体积直方图;
D O I
暂无
中图分类号
R734.2 [肺肿瘤];
学科分类号
摘要
目的评价剂量体积直方图参数及临床因素对非细胞肺癌三维适形放疗同期化疗后急性重度放射性肺炎(SARP)的预测价值。方法回顾分析2006—2010年行三维适形放疗同期化疗的非小细胞肺癌147例病例资料。对有无SARP的剂量学参数行成组t检验,对有差异的和临床因素行Logistic法多因素预测分析。用受试者工作特征(ROC)曲线分析各剂量学因素的预测价值,Pearson法分析剂量学数据间相关性并从剂量学参数中提取有代表性因子。结果全组患者SARP发生率为9.5%。平均肺剂量(MLD)、V20、V30、V40、V50与SARP发生相关(χ2=4.87~6.84,P=0.009~0.025)。控制SARP发生率≤5%时的界值分别为MLD≤16.77 Gy,V20≤34.15%,V30≤23.62%,V40≤18.57%,V50≤13.02%,其敏感性、特异性、ROC曲线下面积分别为78.0%、48.1%、0.678,42.9%、82.0%、0.661,78.6%、52.9%、0.667,71.4%、61.7%、0.677,57.1%、67.7%、0.651。因子分析显示可考虑选取MLD、V20、V30中的1个或2个,V40、V50中的1个用于预测SARP。肿瘤位于右中下肺者SARP发生率高于其他部位(22.2%:6.7%,χ2=6.19,P=0.023)。结论 MLD、V20、V30、V40、V50可用于放射性肺炎预测,但单个预测价值不佳,要多种参数联合使用。肿瘤位于右肺中下叶者放疗后发生SARP危险性较肿瘤位于其他部位者高。
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页码:326 / 329
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