Methods We randomly assigned women with breast cancer to sentinel-lymph-node biopsy plus axillary dissection or sentinel-lymph-node biopsy alone.
方法：我们随机分配女性乳腺癌患者接受前哨淋巴结活检和腋窝淋巴结清扫或只接受前哨淋巴结活检。
Sentinel lymph node biopsy SLN is the standard procedure for axillary staging in patients with primary operable breast cancer and uninvolved axillary nodes.
前哨淋巴结活检是判断早期乳腺癌病人腋下分期的一项常规(标准)的做法，这类病人尚有未被侵袭的腋下淋巴结并可通过手术进行治疗。
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