These analyses showed that increased Piwil1 expression was significantly associated with FIGO stage (P = 0.042), lymphovascular space involvement (P = 0.000), lymph node metastasis (P = 0.026), and level of myometrial invasion (P = 0.048), but not with patient age or histological grade (Table 1). Here, PIWIL1 is linked to metastatic malignant neoplasm in the lymph nodes.