Axillary Lymph Node Status After Completion of Preoperative Neoadjuvant Systemic Chemotherapy in Patients

Patients will undergo preoperative lymphoscintigraphy in the nuclear medicine department to access axillary and extra-axillary sites of localization. Intraoperatively, patients will also be injected with approximately 4 to 5 mL of 1% isosulfan blue dye (by intradermal, intraparenchymal, or subareolar route). Patients will undergo intraoperative identification and biopsy of all SLN candidates. A confirmatory axillary lymph node dissection will then be performed on all patients.