The use of ultrasound in the clinical re-staging of the axilla after neoadjuvant chemotherapy (NACT)

Axillary ultrasound provides clinically useful information post-NACT, which will guide surgical decision-making. Patients with aUS-negative axillae are likely to have a lower false negative rate of SLNB after NACT (Boughey et al.). However, aUS does not replace the need to identify and biopsy the nodes which were proven to be positive prior to NACT.