E-ISSN 2587-0831
Case Report
Follicular Thyroid Carcinoma with Metastases to the Breast: An Unusual Case
1 Department of Medical Oncology, MedicalPark Hospital, İzmir University, İzmir, Turkey  
2 Department of Medical Oncology, Faculty of Medicine, Akdeniz University, Antalya, Turkey  
3 Department of Pathology, Faculty of Medicine, Süleyman Demirel University, Isparta, Turkey  
Eur J Breast Health 2014; 10: 69-71
DOI: 10.5152/tjbh.2014.1513
Key Words: Breast cancer, metastasis, Follicular thyroid cancer
Abstract

A 57-year-old woman was admitted with a left breast mass. Metastatic follicular thyroid carcinoma (FTC) was diagnosed two years previously with excision of a parietal bone lesion. Two sessions of radioactive I-131 were administered after total thyroidectomy due to multiple metastases in the lungs and bones. A regimen of single agent adriamycin was given when the disease progressed. Partial remission was obtained after 6 cycles of chemotherapy. After five months following chemotherapy she was admitted with a left breast mass. Surgical excision revealed FTC metastasis. The patient has a stable disease twelve months after metastasectomy.

Metastasis of thyroid cancer to the breast is a very rare occurrence. Only a few cases were reported. It is important to distinguish metastatic malignancies from primary breast tumors to avoid destructive surgery and maintain the appropriate treatment of the primary tumor.

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