PIWIL2 and metastatic malignant neoplasm in the lymph nodes: A significant positive association of the Piwi-like 2 IRS with lymph node metastasis (rs = 0.308; P = 0.002), Piwi-like 1 staining (rs = 0.730; P < 0.001), CK20 staining (rs = 0.464; P < 0.001), and GATA 3 staining (rs = 0.499; P < 0.001) was detected.