Metastatic carcinoma from other organs to the oral cavity is rare. We report a case of metastatic thyroid carcinoma to the condylar process. The patient was a 49-year-old woman during follow-up for a thyroid tumor. She was aware of a mass in the preauricular region. Because thyroid carcinoma was suspected, the condylar process and lung metastasis were detected on imaging examinations, and she was referred to our department for treatment of the condylar process. She underwent total thyroidectomy. The pathological diagnosis was follicular carcinoma and papillary carcinoma of thyroid. We performed hemimandibulectomy, and the pathological diagnosis was condylar process metastasis of follicular thyroid carcinoma. After radioactive iodine was given as postoperative therapy, lesions of the lungs shrank.
