1. The typical features of thyroid cancer are: indistinct borders, gravelly calcifications (dotted strong echogenicity), and abundant blood flow. Other characteristics: irregular shape and aspect ratio greater than 1.0. Another type of papillary carcinoma is a cystic nodule with a papillary shape in the solid part. 2.Follicular carcinoma has benign characteristics, but is rich in blood flow, faster growing and solid. 3.Our hospital ultrasound specialist Director Niu is the most powerful, and Hao Yuzhi, Wang Yong, Chen Yu and Zhou Xiang are all very good. 4.As far as possible, postoperative ultrasound should not be checked within a short period of time. Generally, it is recommended to review the ultrasound within six months after surgery, and it is easy to find enlarged lymph nodes within a short period of time.