A similar tendency was observed in the analysis of the final levels of these biomarkers, namely in the G1 group, where the median final VEGF-R2, VEGF-R3, and VCAM-1 serum concentrations were similar to those in the tumor grade G2 (p > 0.05) (Table S4 in the Supplementary Material). Here, FLT4 is linked to neoplasm.