Radiology:耐受EGFR-TKI治疗的非小细胞肺癌的CT征象

2019-02-22 shaosai MedSci原创

本研究旨在评价经EGFR-TKI治疗耐受的T790M突变阳性非小细胞肺癌(NSCLC)临床和CT特点。

本研究旨在评价经EGFR-TKI治疗耐受的T790M突变阳性非小细胞肺癌NSCLC临床和CT特点。

本研究回顾性分析了304例NSCLC并行一线EGFR-TKI治疗后再次活检的患者。再次活检方法包括CT或X线透视引导下肺活检(n = 105)、支气管镜US或支气管镜引导下活检(n = 66)、胸水分析(n = 47)或其他实性脏器活检(n = 43)及US引导下腋窝或锁骨上淋巴结活检(n = 31)和脑脊液分析(n = 12)。分析首次诊断及再次活检时CT征象。计算无进展生存期、TKI治疗后到再次活检时间及生存期。

结果为,在再次活检时,共有144 (47.4%)例患者T790突变阳性。在106例再次肺活检(53 [50%] of 106)和77例原发肺病灶(36 [47%] of 77)患者中T790M突变阳性率相似。T790M突变阳性与TIK治疗失败后CT图像上外周肿瘤(OR, 2.6; P = .01))、胸膜牵拉(OR, 5.0; P < .001)、空气支气管征(OR, 4.0; P = .006)具有相关性。T790M突变阳性患者自TKI治疗到再次活检时间要比T790M突变阴性患者时间要长(20.5 vs 13.6月s; P < .001)。I790突变阳性肺炎患者自再次活检到最后随访时间总计生存期要明显延长(P = .014)。然而,T790M突变阳性是否与中位数生存期间并无统计学差异。

本研究表明,在非小细胞肺癌患者进行EGFR-TKI治疗失败后再次活检时CT出现外周肿瘤累及血管、胸膜牵拉、肺病变空气支气管征与T790M突变阳性具有显着相关性。

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    2019-02-24 liuyiping

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