Thyroid nodule 19mm border is not clear, whether the need for treatment, need to look at the location of the nodule, blood flow and other conditions, relying solely on the border is not clear, can not judge the nature of the nodule, we recommend that the patient to go to the hospital in time for further examination, if the malignant tumor of the thyroid gland, it is recommended that timely surgical treatment. Thyroid nodules can be generally categorized into benign and malignant thyroid nodules. When benign thyroid nodules reach 19mm, regular observation should be paid attention to, and when discomfort occurs, timely medical treatment should be sought. When the thyroid nodule is malignant, it should go to the hospital in time to take the method of surgical removal for treatment. Patients with thyroid nodules 19mm border is not clear, should go to the hospital in time for examination, and under the guidance of the doctor for treatment, do not take care of their own, to avoid delays in the condition, resulting in adverse consequences.