Myth 1: Painless goiter is not a problem The incidence of thyroid disorders has been increasing in recent years. Clinically, thyroid tumors are often only manifested as thyroid nodules. Thyroid tumors, whether benign or malignant, are not particularly uncomfortable in the early stage, except for acute thyroiditis, intracapsular bleeding of thyroid lumps, sudden enlargement of thyroid swellings and local pain. Then, when thyroid cancer develops to a certain level, the tumor may invade the surrounding tissues and cause discomfort or pain. Therefore, this view of seeing a doctor after having pain is wrong and will delay the best diagnosis and treatment of the disease. Cancer is a kind of disease with abnormal cell proliferation and differentiation. Chemotherapy drugs have “cytotoxic” and promote differentiation, so chemotherapy can kill cancer cells and promote differentiation, thus curing cancer. However, chemotherapy is a double-edged sword, which can cause serious toxic side effects and damage to human body while achieving therapeutic effect; at the same time, chemotherapy can suppress immune function of patients, which in turn encourages the growth of cancer cells; multiple times of chemotherapy and repeated stimulation can intensify the drug resistance of cancer cells and reduce the effect of chemotherapy, which is generally poor after 6 times of chemotherapy. For these reasons, chemotherapy has a strict course of treatment and dosage regulations, and one should not believe too much in the tumor suppressing effect of chemotherapy and increase the dosage without authorization. Therefore, chemotherapy is not “more chemotherapy is safer”, we need to understand scientifically and use chemotherapy appropriately, and we need to take drugs that increase the effectiveness and reduce the toxicity of chemotherapy at the same time, so that chemotherapy can better serve the health of patients. In addition, we should also pay attention to recognize the pathological type of thyroid cancer, differentiated thyroid cancer is not sensitive to radiotherapy treatment, so we should not blindly carry out radiotherapy treatment. Myth 3: After in-hospital treatment, the treatment effect is left to fate The period after in-hospital clinical treatment is the “high-risk period” for tumor recurrence. The recurrence and metastasis rate of tumor within 5 years after radical tumor surgery is over 90%, which warns us that we should not let down our guard after in-hospital treatment. To judge the merit of a tumor treatment plan, 5-year survival rate is generally used (there are a few who use 3-year or 10-year survival rate), and those who do not have recurrence or metastasis within 5 years can be declared as clinical cure, and the chance of recurrence and metastasis in the future is very small. Therefore, the 5-year period after the end of in-hospital treatment is called the 5-year risk period, during which it is especially necessary to prevent recurrence and metastasis. In addition, from the point of view of time, in-hospital treatment takes less time, while out-of-hospital rehabilitation is much longer. Therefore, the end of in-hospital treatment is only the first step in a long march, and there is still a long way to go. We need to take active measures to quickly improve the immune function of the body, remove the residual cancer cells and reduce the chance of recurrence and metastasis.