Figure 3.

Kaplan–Meier curves for overall survival of ESCC with lymph node metastasis, vascular invasion, nerve invasion, and the treatment of surgery plus chemotherapy. (a) Patients with vascular invasion have a significantly shorter survival (p = 0.011); (b) patients with lymph node metastasis have a significantly shorter survival (p = 0.006); (c) patients with nerve invasion have a significantly shorter survival (p = 0.02); (d) patients who had postoperative chemoradiotherapy have a significantly longer survival (p = 0.002).