Dashevsky BZ, et al. - This study is conducted to assess whether the disease status of the pre-neoadjuvant chemotherapy (NAC) core biopsied lymph node (preNACBxLN) in patients with node-positive breast cancer corresponds to the nodal status of all surgically retrieved lymph nodes (LNs) post-NAC and whether wire localization of this LN is feasible. In patients post-NAC, they noticed that the ultrasound-guided wire localization of the preNACBxLN is feasible and may improve the detection of the residual tumor.