Abstract
Neoadjuvant systemic therapy (NST) is increasingly used in early-stage breast cancer to downstage the extent of surgery in both breast and axilla. Neoadjuvant systemic therapy refers to neoadjuvant chemotherapy (NAC), neoadjuvant endocrine therapy (NET), and/or biological targeted and non-targeted agents. De-escalating axillary surgery is of particular interest because it may minimize associated morbidities such as lymphedema. Axillary surgical management following NAC is well studied, and there are several ongoing studies focusing on this topic. The bulk of this chapter will be focused on discussing axillary surgical management following NAC. Sentinel lymph node biopsy (SLNB) following NAC can be done accurately with false negative rates (FNR) comparable to upfront surgery for those patients who are clinically node negative (cN0) at presentation. SLNB following NAC is also accurate for patients who are clinically node positive (cN+) at presentation, when >2 lymph nodes are removed, along with some other surgical technique modifications reviewed in detail in this chapter. The long-term oncologic outcome following SLNB without axillary lymph node dissection (ALND) for cN+ patients following NAC is not known. Unlike the topic of axillary surgical management following NAC, where there is robust data and interest, the role of NET in axillary management is not well studied. Additionally, the oncologic significance of residual axillary disease following NET is not known. Further investigation is warranted to help answer these questions.
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Lee, J.S., McAuliffe, P.F., Johnson, R.R. (2022). Surgical Management of the Axilla in Node-Negative and Node-Positive Disease at Diagnosis. In: Soran, A., Nakhlis, F. (eds) Management of the Breast and Axilla in the Neoadjuvant Setting. Springer, Cham. https://doi.org/10.1007/978-3-030-88020-0_10
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DOI: https://doi.org/10.1007/978-3-030-88020-0_10
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