Figure 1

Comparison of Kaplan–Meier curves for disease-free survival. (A) Sentinel lymph node-positive patients without (solid line) and with (dashed line) additional positive non-SLNs, (B) SLN-positive patients with SLN micrometastases (solid line) and SLN macrometastases (dashed line), (C) SLN-negative patients (solid line), SLN-positive patients with micrometastases without (bold solid line) and with additional positive non-SLNs in CLND (dashed line), and (D) SLN-negative (solid line) and SLN-positive (dashed line) patients. P-values were calculated using a log-rank test.