Thyroid cancer has the highest survival and cure rates of all cancers today. The cure rate is over 90% in the United States and close to 85% domestically. Korea has the highest incidence rate, with a five-year survival rate of 99.8% from 06-10 years. Thyroid cancer is different from the usual thyroid nodules and is a malignant tumor that occurs in the thyroid gland, including papillary, follicular, medullary, and undifferentiated carcinomas. According to the two studies mentioned above, papillary thyroid cancer has the highest survival rate after treatment, accounting for nearly 90% of the total thyroid cancer incidence. This type of thyroid cancer is also predominant in the recent increase. In contrast, the incidence of follicular, medullary and undifferentiated carcinomas has not changed significantly over the past decades. Despite the marked increase in the incidence of thyroid cancer, the mortality rate has remained stable over the past decades. Moreover, the 10-year survival rate for thyroid cancer is very high. In the case of papillary thyroid cancer, for example, the 10-year survival rate is as high as 85%. The health effects are not even as high as the familiar high blood pressure and diabetes, and patients in the past may not even find out they have thyroid cancer until they are 70 or 80 years old.