TG and metastatic malignant neoplasm in the lymph nodes: Preoperative Tg levels were significantly correlated with maximum tumor dimension (MTD) (p < 0.001), maximum diameter of lymph node metastasis (MDLNM) (p = 0.002), NLNM (p < 0.001), HT (p < 0.001), T stage (p < 0.001), and N stage (p < 0.001).