There is no such thing as “8 symptoms of thyroid 4a”. Thyroid 4a is a thyroid ultrasound classification, and thyroid 4a refers to a thyroid nodule that is classified as 4a. Thyroid nodules of this degree may be asymptomatic, or they may appear hoarse, or have an enlarged anterior neck, etc. The so-called 4a is a classification based on the results of an ultrasound examination of the thyroid. The so-called 4a thyroid nodule is a grading based on the ultrasonographic findings of the thyroid nodule, and represents a 2 to 10 percent chance that the thyroid nodule is malignant. Thyroid nodules in thyroid 4a can be either small nodules that are asymptomatic or larger and present as a noticeably enlarged thyroid nodule in the front of the neck. In addition, a thyroid nodule of grade 4a may press on the recurrent laryngeal nerve, which may cause symptoms such as hoarseness. If the test shows a grade 4a thyroid nodule, it is recommended to follow the doctor’s instructions for further examination and confirmation, and to follow the doctor’s instructions for treatment.