Numb chin in thyroid carcinoma: A rare clinical presentation

Introduction: Metastasis to the oral region from a malignant tumor elsewhere in the body is an uncommon but clinically important finding, because it may be the first indication that the patient has a distant primary tumor. Case report: A 65­year­old female presented with numb chin secondary to metastasis from thyroid follicular carcinoma is discussed. The lesion was located in the mandible on the right side. The diagnosis was solely based on histopathological examination of the tissue taken from the lesion in the mandible. This was the first evidence of the metastatic tumor in the jaws from thyroid follicular carcinoma in this patient. Conclusion: Although metastatic lesions within the mandible can be asymptomatic, most patients experience some degree of discomfort or pain, which is often followed by loosening of teeth or unilateral paresthesia or anesthesia of the lower lip or chin. The development of these symptoms should alert the clinician to the potential presence of metastatic disease.