Univariate analysis showed that the proportion of BMI≥25 kg/m2, multiple foci, bilateral foci, diameter >0.5cm and extracapsular invasion of the LNM group was significantly higher than those of the non-lymph node metastasis group (all P<0.05), while there were no significant differences in HT, BRAF gene mutation rate, distant metastasis, risk stratification of recurrence, and TNM stage (all P>0.05). The gene discussed is BRAF; the disease is metastatic malignant neoplasm in the lymph nodes.