POU5F1 and metastatic malignant neoplasm in the lymph nodes: Both OCT4 and VM were not only correlated with lymph node metastasis (p = 0.022 and p = 0.004) and histological grade (p = 0.038 and p = 0.000), but also with NPI (p = 0.006 and p = 0.000) (Table 1).