Fig. 5From: Patterns and prognostic predictive value of perineural invasion in esophageal squamous cell carcinomaEffects of PNI status on ESCC survival in different pN stages. a DFS of patients with pN-negative ESCC according to PNI status; b OS of patients with pN-negative ESCC according to PNI status; c DFS of patients with pN-positive ESCC according to PNI status; d OS of patients with pN-positive ESCC according to PNI status. ESCC, oesophageal squamous cell carcinoma; PNI, perineural invasion; DFS, disease-free survival; OS, overall survivalBack to article page