回顾性收集PD-L1(22c3抗体,Dako)临床病理连续检测的131例肺外转移性NSCLC以及同期非配对肺内肿瘤972例进行对照分析,对比肺外与肺内肿瘤组织样本检测的PD-L1肿瘤阳性比例评分(tumor proportion score, TPS)差异。. Here, CD274 is linked to neoplasm.