What factors are responsible for the high rise of thyroid cancer year after year? The exact exact cause is still difficult to be sure, but from epidemiological surveys, experimental tumor studies and clinical observations, the occurrence of thyroid cancer may be related to the following factors. 1.Radiation damage In clinical practice, many facts indicate that the occurrence of thyroid gland is related to the action of radiation. It is particularly noteworthy that children who have received radiation treatment to the upper mediastinum or neck during infancy due to enlarged thymus or lymphatic gland-like proliferation are especially prone to thyroid cancer, because the cells of children and adolescents proliferate vigorously, and radiation is an additional stimulus that easily promotes their tumor formation. For example, after the 1986 Chernobyl nuclear power plant leak in the former Soviet Union, the incidence of thyroid cancer was 100 times higher in children living in Ukraine and Belarus than elsewhere. The chance of thyroid cancer occurring in adults after neck radiation therapy is uncommon. Excessive iodine intake or iodine deficiency can change the structure and function of the thyroid gland. For example, the incidence of thyroid cancer in endemic areas of Switzerland is 2 per 1,000, which is 20 times higher than that in non-endemic areas such as Berlin. Iceland and Japan are the countries with the highest iodine intake and the incidence of thyroid cancer is higher than that of other countries. People living in coastal cities usually consume more seafood and love to eat pickled seafood, which may not only cause thyroid-related diseases, but also lay a hidden risk for thyroid cancer. Genetic factors 5%-10% of medullary thyroid cancer have obvious family history and are often combined with pheochromocytoma, so it is presumed that the occurrence of this type of cancer may be related to chromosomal genetic factors. 4.Modern life style (1) ambulatory work Nowadays, most young white-collar workers face computer ambulatory work for a long time. This not only leads to cervical spondylosis and frozen shoulder, but also affects the blood circulation of thyroid gland, which will become tumor in the long run. (2) Mental stress Modern society young people have to bear the pressure from society and family in many ways, after working during the day, some people have to stay up late at night, this overdrawn lifestyle plus long-term emotional can not be relieved, so that the thyroid cells do not get a good repair metabolism, in the long run will make the thyroid damaged and disease. (3) Radiation damage Due to the development of technology, life can be exposed to more and more radiation, such as electromagnetic radiation, microwave radiation and ionizing radiation caused by medical examinations. The accumulation of these radiation will naturally damage the normal cells of the body and cause mutations in the thyroid cells. (4) Hormone abuse A large amount of hormone-rich food leads to endocrine system disorders in adolescents, and high intake of various hormones is also one of the triggering factors for thyroid cancer. It is indeed frightening to see that the incidence figures of thyroid cancer are renewed year after year. However, this is not the case, as the survey data also shows the “mild” side of thyroid cancer. While the incidence of thyroid cancer has tripled in the last 50 years, the mortality rate has remained stable. This is because the prognosis of thyroid cancer is generally good among malignant tumors, and many thyroid cancers have metastasized, but patients can still survive for more than 10 years. Thyroid cancer is divided into four categories: papillary carcinoma, follicular carcinoma, medullary carcinoma and undifferentiated carcinoma, of which the most common is papillary carcinoma, which accounts for more than 85%, and papillary carcinoma has the best treatment effect, especially in adolescent patients, and is probably the best cancer for human beings, with long course and good prognosis, and almost does not affect normal life expectancy; followed by about 10% of follicular carcinoma, 5% of medullary carcinoma, and 1 The next 10% are follicular carcinoma, 5% are medullary carcinoma, and 1 to 2% are undifferentiated carcinoma. In conclusion, there are many factors involved in prognosis, such as age, gender, pathological type, extent of lesions, metastasis and surgery, among which the pathological type is the most important. Ninety-five percent of patients with well-differentiated thyroid cancer can survive for a longer period of time. This is made possible by improved screening tools, improved surgical techniques and more comprehensive postoperative treatment and management. First symptom: a painless mass in the neck. Early stage thyroid cancer, if treated with timely and appropriate surgery, can have a long survival period and even “revert” to normal after surgery. However, if early-stage cancer becomes advanced cancer, the result after surgery will be much worse and the survival period after surgery will be greatly reduced.