BRAF and metastatic malignant neoplasm in the lymph nodes: In univariable analyses, lymph node metastasis (p = 0.964 in DTC, p = 0.410 in PTC) and BRAF V600E mutation (p = 0.331 in DTC, p = 0.253 in PTC) were not selected to multivariable analysis with p-values > 0.2 (S1 and S2 Tables).