Papillary thyroid cancer is the most common type of thyroid cancer with better differentiation, lowest malignancy and better prognosis, while micro papillary thyroid cancer refers to papillary cancer with tumor diameter less than 1 cm. It can be understood in this way, that is, the tumor is relatively small, or early stage papillary thyroid cancer. As you can imagine, the malignancy and prognosis of this type is more optimistic than that of papillary thyroid cancer. According to clinical epidemiological survey, the 10-year survival rate of papillary thyroid cancer is up to 98%, then micro papillary thyroid cancer is basically does not affect life expectancy. Some studies have shown that when scholars performed autopsies on long-lived elderly people, they found that some of them actually suffered from microscopic thyroid cancer during their lifetime, but this cancer usually progresses very slowly or even not, which further indicates that the existence of microscopic papillary thyroid cancer does not affect the life expectancy of people. Micro papillary thyroid carcinoma, although still positioned clinically within the category of malignancy, does not infiltrate the thyroid envelope in most cases, and there is no vascular infiltration or distant metastasis. The mortality rate is less than 0.1% and the impact on life is completely negligible, but it should not be neglected and it is recommended to seek medical and surgical treatment in a timely manner and to be reviewed regularly.