TG and Hashimoto thyroiditis: Univariate logistic regression analysis showed that in the overall population, gender, age, tumor size, bilateral tumor, degree of capsule invasion, margin on ultrasonogram, calcification on ultrasonogram and serum thyroglobulin had significant associations (P<0.05) with CLNM, and there were no significant associations of chief complaint duration, multifocality, tumor aspect ratio, TSH, Hashimoto’s thyroiditis and nodular goiter with CLNM (P>0.05).