BRAF and metastatic malignant neoplasm in the lymph nodes: While the current study design precludes us to assess the biologic differences between GD-related PTCs and PTCs identified in euthyroid patients, we investigated differences in prognostic histopathological parameters (histological features including BRAF-like or RAS-like tumor subgrouping, vascular invasion, lymphatic invasion, perineural invasion, extrathyroidal extension, lymph node metastasis, etc.)in N-GD and S-GD groups.