Fig. 1

Kaplan–Meier survival curves in the sentinel lymph-node biopsy (SLNB)-only and axillary lymph node dissection (ALND) groups before propensity score matching. (a) Axillary recurrence-free survival (ARFS). (b) Regional recurrence-free survival (RFS). (c) Disease-free survival (DFS). (d) Overall survival (OS).