Benign thyroid nodules can be the result of multinodular goiter, Hashimoto’s thyroiditis, cysts, follicular adenomas, etc. The majority of malignant nodules are thyroid cancer, and a few are caused by primary thyroid lymphoma or metastatic thyroid cancer (breast cancer, kidney cancer, etc.). Clinically, there is no specific treatment for benign thyroid nodules, and regular follow-up is sufficient; if the nodules increase in size, show pressure symptoms or have a tendency of malignant transformation, surgery may be required under the guidance of a physician; if the thyroid nodules cause thyroid function abnormalities, antithyroid medication or levothyroxine may be required for treatment. If you find a thyroid nodule, please consult a doctor promptly to find out the cause so as not to delay your condition.