TG and neoplasm: Multivariate logistic regression analysis identified age <45 years (OR = 1.675), maximal tumor diameter ≥1 cm (OR = 2.348), capsular invasion (OR = 2.757), preoperative serum Tg ≥ 34.7 ng/mL (OR = 2.257), preoperative serum TgAb ≥62.6 IU/mL (OR = 1.796), and log10 (Tg/TgAb +1) ≥ 0.21 (OR = 2.409) as independent predictors of CLNM (<i>P</i> < 0.05).