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Ann Surg Oncol:大部分淋巴结阴性乳腺癌可避免腋窝淋巴结摘除

2014-02-12 佚名 dxy

腋窝淋巴结摘除患者的阳性淋巴结数目 除ACOSOG Z0011 试验的结论之外,还有哪些特征适合行保乳治疗 (BCT) 的患者尚未明确。美国Sloan-Kettering纪念癌症中心的Morrow博士等研究者前瞻性地评估了在符合 Z0011 试验入组标准的未经选择的连续患者队列中,有哪些可避免腋窝淋巴结摘除手术 (ALND) ,以及如何在术前甄别适合ALND手术的患者亚组。论文发表于Ann Su

腋窝淋巴结摘除患者的阳性淋巴结数目

除ACOSOG Z0011 试验的结论之外,还有哪些特征适合行保乳治疗 (BCT) 的患者尚未明确。美国Sloan-Kettering纪念癌症中心的Morrow博士等研究者前瞻性地评估了在符合 Z0011 试验入组标准的未经选择的连续患者队列中,有哪些可避免腋窝淋巴结摘除手术 (ALND) ,以及如何在术前甄别适合ALND手术的患者亚组。论文发表于Ann Surg Oncol杂志2014年1月份在线版上。

接受保乳治疗的 cT1,2cN0 乳腺癌患者中,受累前哨淋巴结 (SNs) 数目 <3 且无淋巴结外浸润(ECE)的患者亚组未接受ALND.研究中利用 Fisher‘检验和非参检验-秩和检验对有或无ALND适应症的患者进行比较。【原文下载】

结果显示,从2010年8月份至2012年11月份,共有2157例浸润性乳腺癌患者接受BCT治疗。共有380例患者出现组织学淋巴结转移;93例患者不符合Z0011试验标准。研究者发现,在 287例≥1 H&E-阳性SN患者人群中,有242 (84 %) 例患者仅具备SN适应症。45例不少于3粒阳性SNs (n = 29)或ECE (n = 16)的患者均被视为存在ALND适应症。患者年龄、激素受体和HER2状态,以及肿瘤分级均无组间差异;ALND组患者的肿瘤灶更大。在ALND患者人群中,有72%存在额外阳性结节。研究中未发现腋窝复发现象(中位随访期13个月)。

研究得出如下结论:接受BCT治疗的连贯患者中有84%可避免ALND,提示符合 ACOSOG Z0011 试验入组标准的大部分患者腋窝淋巴结负荷较低。患者年龄、ER、及HER2状态不是ALND的预测因素,ALND 手术的适用标准(≥3 SNs, ECE) 同时也是腋窝疾病残留高危患者的甄别标准。

研究背景

美国外科医师学会(ACOSOG) Z0011试验证实,接受保乳治疗(BCT)的临床淋巴结阴性,且有1或2颗转移前哨淋巴结(SNs)的女性患者仅行前哨淋巴结活检(SLNB),产生的局部控制率、无病生存及总生存结局与行腋窝淋巴结清扫术(ALND)结局相似,但前者引起的死亡率明显更低。

目前,全国综合癌症网推荐对于符合ACOSOG Z0011试验标准的患者,不建议行SLNB以外的手术。然而,这一推荐是否适用于所有接受BCT治疗的乳腺癌女性患者还存在疑问。

其中一项质疑的理由是ACOSOG Z0011纳入的患者经严格选择,且预后良好;大部分为绝经后雌激素受体(ER)阳性且为T1期,许多还存在SNs微转移灶。

年轻女性和ER阴性癌症患者或许被低估了,并且上述特征可能与更大的腋窝淋巴结肿瘤负担相关,辅助治疗后的缓解率可能更少,这意味着不符合上述治疗路径的患者可避免腋窝手术。

2010年,研究者开始利用ACOSOG Z0011试验的入组标准选择连续受试患者队列,在常规实践对于累及SNs不到3粒的患者停止行ALND.该研究的目的在于确定符合ACOSOG Z0011试验入选标准的不可切除的患者队列有多大比例可避免ALND.此外,研究者探索了患者特征和肿瘤特征来确定哪些符合ACOSOG Z0011试验入组标准的患者亚组可在术前即予以明确。

原始出处:

Boughey JC.Axillary dissection can be avoided in the majority of clinically node-negative patients undergoing breast-conserving therapy, by Dengel et al.Ann Surg Oncol. 2014 Jan;21(1):8-10. doi: 10.1245/s10434-013-3201-5. 【原文下载】

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    2017-08-03 laoli

    学习了,谢谢分享!

    0

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    2014-04-26 minlingfeng
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    2014-02-14 sodoo

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