A case report of breast and liver metastases of thyroid follicular carcinoma.

Papillary and follicular thyroid carcinomas (FTCs) have a slowly biological behavior. Most distant metastasis sites are lung and bones. Breast and liver metastasis from differentiated thyroid carcinomas is uncommon. To the best of our knowledge, in English literature follicular thyroid cancer that is metastasis to breast was only in two female cases and to liver was in five patients. Herein, we present a case in whose 68-year-old woman who had a history FTC metastasis to vertebrae and synchronously developed breast and liver metastases within 1 year after first diagnosis.