When we compared WLPTC and classic PTC in patients with coexisting Hashimoto's thyroiditis, there were no significant differences in age, sex, multifocality, tumor size, pT stage, extrathyroidal extension, lymph node metastasis, preoperative diagnosis, or BRAF V600E mutation (Table 3). The gene discussed is BRAF; the disease is Hashimoto thyroiditis.