Relationship between Prox1 or FOXC2 expression and clinicopathological parameters.

Relationship between expression of Prox1 or FOXC2 and parameters excluding MVD and LVD were calculated by chi-square test. Relationship between expression of Prox1 or FOXC2 and MVD or LVD were calculated by one-factor ANOVA test. T classification and clinical stage were classified according to the TNM classification.*Histological differentiation: Well, well-differentiated squamous cell carcinoma; Mod, moderately differentiated squamous cell carcinoma; Por, poorly differentiated squamous cell carcinoma.**MVD and LVD were Means ± S.D. (standard deviation), each S.D. was less than 10% in all cases.