EP.TH.879Does ‘fast -track’ axillary node clearance following positive core biopsy lead to overtreatment of axilla?

Abstract Aims Axillary node clearance (ANC) can cause lifelong disability and conservative axillary dissection is increasingly preferred. However, direct (fast-track) ANC after preoperative biopsy still performed, which may be overtreating the patients with low burden. This study aims to identify if (fast- track) leads overtreatment of axilla. Methods Retrospective data for all breast cancer who underwent surgery between 1 January 2017 31 December 2018 were included in this study. The histopathology results correlated ultrasound findings, or SLNB effect neoadjuvant treatment. These analysed against available guidelines evaluate current practice. Results 82 out 520 had (15.7%). Four groups identified. 35.5% diagnosed nodal infiltration on (Group A) only 1- 2 positive nodes following ANC. Complete pathological response was observed 37.5% chemotherapy (NACT) B). No further subsequently found 63.6% C). Group D recurrence. Conclusions 15.7% required practice axilla, needs re-evaluation. Targeted could avoid unnecessary abnormal nodes. now recommended have received NACT but has not been evaluated yet up front surgery.