Thyroid nodules are growths or lumps that occur on the thyroid gland, usually appearing as a swelling in the neck. Nodules can be either solid or fluid-filled and are classified as either benign (non-cancerous) or malignant (cancerous). Most thyroid nodules are benign, but it is important to check thyroid nodules to assess their characteristics and to rule out any underlying thyroid conditions.
Thyroid nodules can be checked through a variety of methods, including physical examination, ultrasound, and thyroid function tests. A physical examination involves the doctor feeling the neck to check for any lumps or enlargements. Ultrasound is a non-invasive imaging technique that uses sound waves to produce images of the thyroid gland and any nodules present. Thyroid function tests measure the levels of thyroid hormones in the blood, which can help to determine if the thyroid gland is functioning properly.