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Radiology:定睛观三阴——识别三阴乳腺癌的新型影像学标记物!

2017-11-06 shaosai MedSci原创

约20%的浸润性乳腺癌属于三阴乳腺癌 ,即这种癌雌激素受体阴性,孕激素受体阴性,人类表皮生长因子受体阴性。预后极差,5年生存率不到15%,多见于年轻患者,内脏转移、脑转移几率较高,病理组织学分级多为3级,细胞增殖比例较高,c-kit、p53、EGFR表达多为阳性,基底细胞标志物CK5/6、CK17也多为阳性。肿瘤侵袭性强,易发生局部复发及远处转移。与基底细胞样乳腺癌和BRCA1基因突变相关性乳腺癌

约20%的浸润性乳腺癌属于三阴乳腺癌 ,即这种癌雌激素受体阴性,孕激素受体阴性,人类表皮生长因子受体阴性。预后极差,5年生存率不到15%,多见于年轻患者,内脏转移、脑转移几率较高,病理组织学分级多为3级,细胞增殖比例较高,c-kit、p53、EGFR表达多为阳性,基底细胞标志物CK5/6、CK17也多为阳性。肿瘤侵袭性强,易发生局部复发及远处转移。与基底细胞样乳腺癌和BRCA1基因突变相关性乳腺癌有较多相似特征。

本研究旨在验证是否乳腺癌纹理分析特征与新辅助放疗后病理学完全缓解(pCR)具有相关性,并探究治疗前磁共振(MR)成像中纹理特征与肿瘤亚型的相关性,并将结果发表在Radiology上。

本研究共纳入了自2008年4月10日-2015年3月12日的85例患有乳腺癌并在行新辅助放疗前行乳腺MR成像的患者。利用软件对T2加权MR成像和强化T1加权成像进行二维纹理分析。在pCR阳性与pCR阴性的患者间和在三阴乳腺癌与非三阴乳腺癌患者中比较MR定量参数。利用多变量Logistic回归分析验证独立预测参数。

共有18例肿瘤(22%)为三阴乳腺癌。pCR阳性者为30/85例(85%)。在单变量分析中,T2加权图像中平均像素强度及空间比例因子(SSF)2和4、T1增强图像中的峰度在在三阴乳腺癌与非三阴乳腺癌患者中具有显着性差异(分别为P = .009、.003、.001)。T2加权图像中的峰度(SSF, 2)在三阴乳腺癌与非三阴乳腺癌患者中有显着性差异(P = .015)。在多变量Logistic回归分析中,T2加权图像中的峰度与非三阴乳腺癌患者中的pCR具有独立相关性(P = .033)。在纳入T2加权和T1对比增强图像峰值的多变量模型中,在鉴别三阴乳腺癌具有很好的诊断能力(AUC为0.834)。

本研究表明,对于三阴乳腺癌患者,在治疗前MRI中峰度也许与新辅助放疗后pCR具有相关性,从而有可能成为诊断三阴乳腺癌的潜在生物学标志。

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    2018-07-12 wjywjy
  2. [GetPortalCommentsPageByObjectIdResponse(id=1904487, encodeId=aa8e190448eae, content=<a href='/topic/show?id=b8aa619690e' target=_blank style='color:#2F92EE;'>#标记物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=81, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=61969, encryptionId=b8aa619690e, topicName=标记物)], attachment=null, authenticateStatus=null, createdAvatar=/img/user_icon.png, createdBy=1072181, createdName=wjywjy, createdTime=Thu Jul 12 10:16:00 CST 2018, time=2018-07-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=259229, encodeId=8c182592291f, content=学习一下谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzaiabIFicf63hKvVMjL6aJlx4yX4UcXmzX9DyibCRcicq0QtCRWMaQKh8MYjE1D3EKUBopgiaGWYuqbeR/0, createdBy=0c2b1999806, createdName=三生有幸9135, createdTime=Mon Nov 06 19:57:28 CST 2017, time=2017-11-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=259217, encodeId=19bf25921eaf, content=学习了受益匪浅, beContent=null, objectType=article, channel=null, level=null, likeNumber=81, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/ajNVdqHZLLDicHg2ldsSNmib46PmdzpO7CQEmPjuULp1v45zPWwMYhrnXgvl3OtmUCZSQfgITWn96X9moL94nUGA/0, createdBy=28072041016, createdName=131****1460, createdTime=Mon Nov 06 19:00:35 CST 2017, time=2017-11-06, status=1, ipAttribution=)]
    2017-11-06 三生有幸9135

    学习一下谢谢分享

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    2017-11-06 131****1460

    学习了受益匪浅

    0

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