Figure 2

Disease-free interval and survival curves for micropapillary pattern-positive (micropapillary pattern ratio ≥1%) and micropapillary pattern-negative (micropapillary pattern ratio <1%) cases. Kaplan–Meier plots are shown for postoperative disease-free interval (a) and survival (b). Log-rank analysis indicated significant differences in disease-free interval (P=0.0002) and survival (P<0.05) between the two groups.