Follicular thyroid carcinoma is the second most common type of thyroid cancer, only less than papillary carcinoma, and it originates from the follicular cells of the thyroid gland. Follicular carcinoma of the thyroid and papillary carcinoma are both called differentiated thyroid carcinoma, because this type of cancer is a type of cancer with better treatment effect and lower malignancy, so we call it follicular carcinoma of the thyroid. In addition, since follicular thyroid cancer develops rapidly, it should be taken seriously and early detection and early treatment can lead to a better prognosis.