The weights of tumor for untreated and Lv-VEGF-C-siRNA-treated groups were 1079 ± 168.47 mg and 565.57 ± 89.33 mg, respectively, thus showing reduced tumor weight (64%) and volume (48%) in Lv-VEGF-C-siRNA-treated group relative to the untreated group. This evidence concerns the gene VEGFC and neoplasm.