There are many types of cancer in general. The mildest ones may be those with very early stage or some in situ cancers, which can be treated well by surgery. In addition, among different types of malignant tumors, there are some that are relatively slow in development and have good treatment effect, which are also considered relatively mild. The mildest type is probably papillary thyroid cancer, which is also called cancer, but can be cured in general. The main treatment is to remove most or all of the thyroid tissue through surgery, and to remove the lymph nodes in the neck. If there is, you can do nuclear iodine 131 treatment. If not, you can have regular reviews and take oral thyroxine tablets to supplement thyroxine treatment. The chance of no recurrence over five years is very high, generally reaching more than 95 percent.