After finding a thyroid nodule, you may be worried and often ask: Is it serious? Do I need surgery? What will happen in the future? How will it affect me? Let me tell you: We should know that not every patient suffering from thyroid nodules has prominent symptoms, most of them do not hurt or itch, so they are easy to ignore and are often discovered by chance. In this case, we are often unable to detect the patient’s condition in time and cannot actively treat it, which can be very harmful to our lives and work. Thyroid nodules can be found in men and women of all ages, but are more common in women. Thyroid nodules can be single or multiple. Multiple nodules have a higher incidence than single nodules, while single nodules and multiple nodules have a higher likelihood of thyroid cancer compared to thyroid cancer. Once a thyroid nodule is detected, in most cases, an experienced ultrasonographer can determine the nature of the lesion by ultrasound examination. In some special cases, if ultrasound alone cannot determine the nature of the nodule, the doctor will recommend fine needle aspiration or other diagnostic tests to determine whether to perform treatment. If cancer is highly suspected, surgery is still the best option. However, even if a small nodule is found to be cancerous, there is no need to panic because the prognosis for the vast majority of thyroid cancers is still very good. Benign nodules can be observed if they are not large, but as they increase in size, they can compress the airway and esophagus and cause symptoms in severe cases. Some benign thyroid nodules can become malignant as they grow, and the nodules may increase in size in a short period of time, so they need to be closely monitored. Occasionally, however, benign thyroid nodules may bleed internally due to improper activity, and the nodule may suddenly increase in size and become locally distended and painful, so do not panic and go to the hospital for further examination.