Thyroid metastasis of vaginal leiomyosarcoma: a case report and review of the literature.

Metastasis of vaginal leiomyosarcoma to the thyroid gland is an extremely rare event. Here, we report a case of thyroid metastasis of vaginal leiomyosarcoma. A 65-year-old female patient presented with a multinodular toxic goiter. 5 years earlier the patient has undergone a radical vaginal resection followed by chemotherapy due to high-grade vaginal leiomyosarcoma. Fine-needle aspiration cytology of the right thyroid lobe was suggestive of the benign thyroid lesion. As the diagnosis was not clear, following a multidisciplinary team discussion the decision was made to proceed with a total thyroidectomy. Pathologic assessment of the tumor confirmed thyroid metastasis of vaginal leiomyosarcoma.