Figure 5. Kaplan-Meier overall survival curves for patients with locally advanced esophageal carcinoma of different pathologic N stage after neoadjuvant chemotherapy.

The difference between groups (N0, n = 21; N1, n = 11; N2, n = 8; N3, n = 8) was compared with the log-rank test. The survival rate was significantly higher in N0 group than in other groups (P < 0.001).