甲状腺癌是一种内分泌系统中最常见的恶性肿瘤,在全身各种恶性肿瘤中约占1%~2%。其发病率随年龄增大而升高,女性较男性高出约2~3倍。甲状腺癌按病理类型分为乳头状腺癌、滤泡状腺癌、未分化癌和髄样癌。其中乳头状癌和滤泡状癌由于分化程度较高,又被称为分化型甲状腺癌(differe Thyroid cancer is one of the most common malignancies in the endocrine system, accounting for 1% to 2% of all malignancies in the body. The incidence increases with age, women are about 2 to 3 times higher than men. Thyroid cancer by pathological type is divided into papillary adenocarcinoma, follicular adenocarcinoma, undifferentiated carcinoma and 髄 like cancer. Which papillary and follicular carcinoma due to the higher degree of differentiation, also known as differentiated thyroid cancer (differe