When you notice thickening or a lump in your neck, you should think about whether an enlarged thyroid or other thyroid disorder has occurred, even if there are no uncomfortable symptoms. You should go to the hospital promptly at this time. Your doctor can usually tell you whether your thyroid gland is enlarged and whether there is a lump by palpating the thyroid gland. There are many different thyroid disorders, and those who have an enlarged thyroid gland or a swollen thyroid gland generally need further tests to determine the nature of the thyroid disorder, such as blood tests to check thyroid function and, if necessary, radionuclide and ultrasound examinations of the thyroid gland, or even cytology of thyroid puncture. You should think about the possibility of hyperthyroidism when you have symptoms such as fear of heat, excessive sweating, palpitations, anxious temperament, hyperphagia, and weight loss. When you notice symptoms such as fear of cold, swelling, weight gain, dry skin and loss of appetite, you should be aware of the possibility of hypothyroidism. When you feel pain and fever in the neck, especially when you can feel a lump in the thyroid area and have pressure pain, you should think about the possibility of acute or subacute thyroiditis. In these cases, you should go to the hospital in time for further examination so that you can get a timely diagnosis and reasonable treatment. Here we will focus on thyroid tumor: Thyroid tumor can be divided into benign tumor and malignant tumor. Clinically, thyroid tumors often appear only as thyroid nodules, so thyroid tumors are often confused with thyroid nodules. In fact, nodules are only a morphological description. They include tumors, cysts, masses of normal tissue, and thyroid masses caused by other diseases. It is clinically difficult to determine the nature of a thyroid nodule, and even on pathological biopsy, it is sometimes not easy to clearly identify a thyroid adenoma from a nodular hyperplasia, or a benign tumor from a malignant one. Thyroid tumor is a common disease, and its incidence varies greatly in different regions. In general, the incidence of thyroid tumors is higher in areas where goiter is endemic than in non-endemic areas. The most common type of thyroid tumor is benign thyroid tumor. Thyroid cancer is uncommon, but has been increasing yearly in recent years. Surgically proven single nodules are benign tumors in 80% and malignant tumors in 20%. The incidence of single nodule tumor is 15.6%-28.7%, while the incidence of multiple nodule cancer is generally less than 10%. This means that a single nodule is several times more likely to be cancerous than multiple nodules. In terms of gender, thyroid tumors are mostly seen in females and their incidence rate is 4 times higher in females than in males, but in terms of the ratio of thyroid cancer to thyroid nodules, males are higher than females. In each age group, the incidence rates of benign and malignant thyroid masses are similar, but among thyroid nodules in childhood, the incidence rate of thyroid cancer is high, accounting for about 50%-71%, therefore, for thyroid nodules in childhood, one should Therefore, it is important to be especially alert to the possibility of cancer in children.