Abstract
Objectives: The mandibular metastatic spread of carcinoma from the thyroid gland is exceedingly rare. In August 2020, we treated a 69-year-old woman exhibiting thyroid follicular carcinoma metastasis to the ascending ramus region of the mandible showing evidence of detailed radiological and pathological features. Methods: We present a case report of thyroid carcinoma that metastasized to the ascending ramus region of the mandible at 21 years after partial thyroidectomy. We also present relevant information in a literature review of 35 articles, consisting of 43 cases (including our case) of thyroid carcinomas with jaw bone metastasis. We statistically analyzed the demographical and clinical results in terms of age, sex, type of primary cancer, site and time of metastasis, treatment, and outcome.Results: Unlike most of the other cases, in our case, the thyroid cancer had metastasized to the ascending ramus region of the mandible, which made the diagnosis relatively difficult. The patient underwent partial mandibular resection, thyroidectomy, and iodine-131 treatment. The patient was followed up regularly, and no new symptoms were observed at seven months after post-treatment.Conclusions: Surgery is the most common treatment for thyroid metastases of the mandible. Clinicians should ask thyroid cancer patients for follow-up to monitor whether any new complications have occurred. Patients must undergo complete examination of the maxillofacial bone for up to 40 years or more. Otolaryngologists and stomatologists should pay extra attention to patients with thyroid cancer or nodules to avoid misdiagnosis or missing the recognition of thyroid metastatic cancer.
Direct spread of thyroid follicular carcinoma to the parotid gland and the internal jugular vein: a case report