Leiomyosarcoma metastatic to the thyroid is extremely rare. Despite the fact that the thyroid gland is one of the largest vascular organs in the body, clinical and surgical cases have given an incidence of only 3% for secondary malignancies of the organ. Nevertheless,thyroid metastases are not an exceptional finding at autopsy, they are encountered in 2% to 24% of the patients with malignant neoplasms.1 We report a man with right leg leiomyosarcoma metastatic to the thyroid gland.