患者，男性，１７岁。颈部进行性增大二个月来院诊治。体查：一般情况良好，甲状腺Ⅲ度肿大，表面欠光滑，质中，未触及明显肿块。颈部未触及肿大的淋巴结。心肺（－），腹软，肝脾肋下未触及。实验室检查：血常规正常，Ｔ３Ｔ４正常。临床诊断：甲状腺恶性病变可能。高频彩超 Patient, male, 17 years old. Neck progressive increase in two months hospital treatment. Physical examination: generally good, thyroid Ⅲ degree enlargement, the surface is less smooth, quality, no obvious mass. Neck did not touch the enlarged lymph nodes. Cardiopulmonary (-), abdominal soft, liver and spleen ribs did not touch. Laboratory tests: normal blood, T3T4 normal. Clinical diagnosis: thyroid malignant lesions may be. High-frequency ultrasound