Univariate survival analysis suggested that Tsp2 positive (p=0.022), G3 grade tumors (p=0.022), MLPS (p=0.008), lymph node metastasis (p=0.040), and organ invasion (p=0.006) were predictive factors for RFS. This evidence concerns the gene THBS2 and metastatic malignant neoplasm in the lymph nodes.