Table 1 shows the characteristics of these patients. This group included papillary thyroid cancer (n = 86) and follicular thyroid carcinoma (n = 12). Patient's initial Tg levels were 0.75 ± 1.3 ng/mL. In terms of TgAb status, 11 patients had stable positive TgAb concentrations, 16 patients had de novo appearance, and 6 patients had a significant increase in TgAb. On the other hand, in 65 patients, TgAb levels decreased above FS (n = 35) or >50% (n = 30) during follow-up.  Figure 1 represents a flowchart of the results. Here, TG is linked to thyroid gland follicular carcinoma.