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.