JAMA Surg:化疗后完全病理应答的HER2阳性及三阴性乳腺癌患者淋巴转移风险较低

2017-04-25 zhangfan MedSci原创

乳腺完全病理应答与辅助化疗后淋巴结状态高度相关,不进行腋窝活检导致的淋巴结转移风险在本研究中极低

研究表明有40-50%的HER2阳性(HER2+)和三阴性乳腺癌患者(TN T1/T2和 N0/N1)化疗后表现出完全病理应答(pCR)。对于这类患者,辅助化疗(NCT)后经皮穿刺活检还是否有必要?

研究人员就对辅助化疗后、腋窝转移的低风险的完全病理应答患者进行登记探究经皮穿刺活检的必要性。

研究于2010年至2014年进行,涉及的患者有527名,均为HER2+/TN患者,她们在标准乳腺和淋巴结手术后接受辅助化疗。研究的主要终点是达到完全病理应答的患者与不基于亚型、初步超声检查结果和病理状态患者间淋巴结病最终病理检查阳性的发生率。

参与实验的527平均年龄51岁,在初始淋巴结超声显像为N0级的290人中,116人(40.4%)表现为乳腺完全病理应答并且100%在NCT后无腋窝淋巴结转移。在初始活检证实N1级的237人中,77名乳腺完全病理应答患者中的69人(89.6%)没有淋巴结转移(P<0.01),160名未达到完全病理应答患者中的68人(42.5%)没有淋巴结转移 (P<0.01)。未达到乳腺完全病理应答的患者淋巴结转移风险相对较高(风险比7.4 ;95% CI,3.7-14.8  P<0.001)。

研究认为乳腺完全病理应答与辅助化疗后淋巴结状态高度相关,不进行腋窝活检导致的淋巴结转移风险在本研究中极低。临床中应根据乳腺癌患者辅助化疗后应答情况决定是否要进行腋窝活检。

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    2017-04-27 xlysu
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