外周循环肿瘤细胞

外周循环肿瘤细胞,(Circulating Tumor Cell,简称CTC),指由原发肿瘤或继发肿瘤自发进入或诊断操作带入外周血的肿瘤细胞。具有高活力和转移潜能的CTC可以在循环系统中存活,并在合适的环境中增殖,导致肿瘤的复发和转移。CTC的活检分析可用以早期诊断、风险分级、疗效评估和肺癌复发的早期检查。

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