Axillary dissection has been the standard of care for any patient with clinically positive lymph nodes at initial breast cancer presentation. However, modern neo-adjuvant therapies can convert positive nodes to negative nodes, especially in the setting of HER2-positive disease. Accurate axillary staging can be achieved after neo-adjuvant therapy in initially node-positive patients using dual tracer lymphatic mapping, removal of three or more lymph nodes, and confirmation of excision of the previously biopsied and clipped lymph node. Currently accruing clinical trials are designed to determine which patients can safely avoid axillary dissection and/or axillary radiation.
Keywords: axillary dissection; axillary lymph nodes; breast neoplasms; neo-adjuvant chemotherapy.
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