TG and thyroid gland carcinoma: PTC is known for being the most familiar type of thyroid carcinoma, accounting for nearly 90% of all thyroid carcinomas with early dissemination to regional lymph nodes where the postoperative serum Tg is one of its prognostic indicators.26In the present study, PTC represented 78.1% of those who developed locoregional recurrence compared with other pathologies (p = 0.001).