分化型甲状腺癌的诊断与治疗仍存在一些值得关注的问题，如临床医师过度依赖超声检查结果。PET-CT在分化型甲状腺癌的诊断价值有限。对特殊类型的分化型甲状腺癌的处理，特别是微小癌及桥本甲状腺炎合并甲状腺癌的外科治疗，外科医师应严格掌握手术指征与合理选择手术方式。

Issues about the diagnosis and the treatment of differentiated thyroid cancer        WU Yi. Department of Head and Neck Surgery，Fudan University Shanghai Cancer Center, Shanghai 200032,China
Abstract    There are still some issues about the diagnosis and the treatment of differentiated thyroid cancer, like the clinicians rely on the ultrasound too much or the limited application of PET-CT. The strategy against the special situation like the microcarcinoma and the thyroid cancer accompanied with Hashimoto thyroiditis is also very tricky. Surgeons should be more thoughtful when considering about the indication and the extension of the operation.