Patients with thyroid cancer often have few early clinical symptoms. In early stages, most patients primarily notice a rapidly growing thyroid mass. These masses are generally small, and since they do not compress the surrounding tissues or nerves, they are usually painless. Furthermore, the masses are quite firm and typically have poor mobility. As the mass develops and becomes adherent to surrounding tissues, its mobility decreases, potentially becoming fixed in position. This may result in the mass affecting nearby tissues, causing symptoms such as pain and fever due to adhesion. Additionally, a small subset of specific types of thyroid cancer may present with abnormal hormone secretion symptoms.