1.How to eat after thyroid cancer surgery? The principle of diet after thyroid cancer surgery is “low-fat, low-iodine, and mild”. The risk of celiac leakage caused by ligation of the inferior thyroid artery during thyroid cancer surgery is potentially life-threatening; a low-fat diet is an effective measure to prevent the production of celiac fluid and can effectively reduce the health risk of celiac leakage after thyroid cancer surgery. It is generally recommended to maintain a low-fat diet for two weeks after thyroid cancer surgery: including vegetables such as fresh eggplant, carrots, spinach, and peas; fresh fruits and juices; and grains such as rice, bread, and corn flour. Most of the thyroid gland remains partially after thyroid cancer surgery, or the body cannot exclude the presence of latent thyroid cancer cells. Long-term high iodine may stimulate normal thyroid follicles or thyroid cancer cells to proliferate. Therefore, after thyroid cancer surgery, do not eat too much food with slightly high iodine content, such as nori, shrimp, kelp and dried sea fish. However, there is no need to deliberately avoid fresh sea fish and sea crab, which contain about the same amount of iodine as land animal meat. The edema caused by the local inflammatory reaction after surgery can cause discomfort to the patient. Overheated diet will aggravate the painful feeling of eating and make the patient afraid of eating and not able to replenish nutrition in time. Therefore, the diet after thyroid cancer surgery should be mainly warm and good, not too hot or too stimulating. 2.Recommendations for people with high risk of thyroid cancer We often refer to patients with specific genetic mutations, history of previous head and neck radiation, high TSH for a long time, and progressing thyroid nodules. For these high-risk groups, we recommend regular ultrasound examination of the thyroid gland, which is important to determine the morphology of the thyroid gland, the presence of nodular masses with malignant signs, and whether the lymph nodes are enlarged. Some patients at high risk for medullary carcinoma with specific genetic mutations may even require prophylactic surgery. If a mass has been found and malignancy is suspected, further cytological aspiration examination is recommended to obtain pathological tissue to determine the benignity or malignancy of the mass and to give guidance for subsequent diagnosis and treatment. 3.Is there a high survival rate after surgery for thyroid cancer that has not spread? The survival rate of thyroid cancer after surgery is not only related to whether the lesion has spread or not, but also related to various factors such as pathological typing and the degree of surgical standardization. For example, undifferentiated thyroid cancer has a higher risk of recurrence and metastasis after surgery, while differentiated thyroid cancer can have a good prognosis with early detection and intervention; the standardization of the first surgery is also closely related to the prognosis of thyroid cancer, as non-standardized treatment will lead to a higher risk of recurrence and metastasis and affect the long-term survival of patients. 4.Is there any obvious symptom in the early stage of thyroid cancer? Most patients with thyroid cancer have normal thyroid function, but only when the lesion is a high-functioning adenoma or is complicated by hyperthyroidism or hypothyroidism will there be symptoms such as hyperthyroidism or hypothyroidism. The most common early symptoms of thyroid cancer include painless lump in the neck, hoarseness, dysphagia, difficulty in swallowing, etc. When the lesion is medullary carcinoma, twitching of the hands and feet, facial flushing, palpitations, diarrhea, weight loss and other carcinoid syndrome may also appear. Many patients with differentiated thyroid cancer may not have any physical abnormalities until the lesion is found during physical examination. 5.What is the recurrence rate of microscopic thyroid cancer? In 1998, the World Health Organization defined incidental thyroid cancer with a tumor diameter of up to 1 cm as microscopic thyroid cancer. Generally speaking, the 10-year disease-related survival rate of patients with microscopic thyroid cancer is 99%, which tells us that patients generally have a good prognosis and can survive for a long time after receiving surgical treatment for thyroid cancer. However, it should be noted that tumor size is not the only criterion to determine malignancy, as some microscopic thyroid cancers may show local invasion, lymph node metastasis or distant metastasis at an early stage, and among the various causes of death, lung metastasis is more common. According to the literature, the recurrence rate of microscopic thyroid cancer is generally 1.7%~6.2%. 6.What are the physical signs of advanced thyroid cancer patients? Due to its anatomical location and biological behavior of cancer, advanced thyroid cancer is prone to invade the larynx, cervical end trachea, laryngeal nerve, esophagus, upper mediastinum and other tissues and organs, which can easily cause symptoms such as hoarseness, difficulty in whistling, swallowing disorder and bleeding, which can seriously affect the quality of life and safety of patients. After surgery, patients with advanced thyroid cancer need to take thyroxine for a long time after surgery. Patients need to take the medication on time, review regularly and visit the hospital in time. 7.What is the condition of swollen lymph nodes caused by thyroid cancer? There are many causes of swollen lymph nodes, such as bacterial and viral infections, systemic lupus erythematosus, malignant tumors, tumor metastasis and other factors may lead to swollen lymph nodes. Usually, inflammatory lymph node enlargement is mostly painful, with clear borders and size not exceeding 2 cm, while lymph node enlargement caused by malignant tumors is mostly with unclear borders, no pressure pain and larger size. However, these symptoms are limited to superficial judgment. To confirm whether the swollen lymph nodes are caused by tumors or not, it is necessary to combine the other accompanying symptoms of swollen lymph nodes and the final pathological puncture to determine. Will thyroid nodules develop into cancer? Thyroid nodules can be classified into benign, malignant and inflammatory according to their nature. The possibility of benign nodules becoming cancerous is very small, and conservative treatment is often recommended for this group of people to maintain follow-up. For cases such as masses pressing on trachea or esophagus, or secondary hyperthyroidism, masses entering the sternum and affecting the external image, surgery can be used. For a small number of thyroid nodules that are pathologically diagnosed as malignant, timely surgery is required to avoid further deterioration. Inflammatory nodules, on the other hand, are a kind of inflammation due to autoimmune disease, also called lymphocytic thyroiditis, and most of them will be accompanied by lifelong, and medication will be used under the guidance of doctors according to the specific thyroid function. 9.What exercises can thyroid cancer patients do? Exercise for thyroid cancer patients after treatment should be moderate and appropriate, such as dancing, running and table tennis. Especially for patients after cervical lymph node dissection, functional exercises should be carried out gradually after surgery and attention should be paid to correct the dysfunction of the affected shoulder at all times.