In univariate logistic regression analysis, the roles of gender (OR=0.43, P=0.01), Hashimoto’s thyroiditis (OR=2.52, P=0.03), tumor size (OR=1.37, P=0.01), and thyroglobulin level (OR=1.16, P=0.01) were significant in distinguishing between the ER and non-ER (IDR, BIR and SIR) at the end of follow-up. This evidence concerns the gene TG and Hashimoto thyroiditis.