Figure 3From: The prognostic effect of perineural invasion in esophageal squamous cell carcinoma Univariate survival analysis with regard to perineural invasion in the subset of ESCC patients with node-negative disease. The presence of perineural invasion was identified as a prognostic predictor of overall survival (A) and recurrence-free survival (B) in ESCC patients with node-negative disease.Back to article page