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Breast cancer to thyroid gland: An unconventional metastatic site
Emir Celik1, Tulin Ozturk2, Nilay Sengul Samanci1, Nebi Serkan Demirci1, Burak Akovali3, Fuat Hulusi Demirelli4
1 Department of Medical Oncology, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
2 Department of Pathology, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
3 Department of Nuclear Medicine, Cerrahpasa School of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
4 Department of Medical Oncology, Istanbul University-Cerrahpasa, Istanbul, Turkey
Correspondence Address:
Emir Celik,
Istanbul University-Cerrahpasa, Cerrahpasa Medical Faculty. Kocamustafapasa Street. No:53 34098 Fatih, Istanbul
Turkey
 Source of Support: None, Conflict of Interest: None DOI: 10.4103/jcrt.JCRT_561_20
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Thyroid gland blood supply is rich but it is not an open area for metastasis. Only 1%–3% of the neoplastic lesions seen in the thyroid are of extrathyroidal origin. Thyroid, lung, bone, lymph node metastasis were detected at the time of diagnosis in a 78-year-old woman with metastatic breast cancer. Control imaging was performed 3 months after hormone therapy was started. All lesions were regressed except thyroid lesion and neck lymph. Tru-cut biopsy was performed to the lesion in the thyroid. The result is consistent with breast cancer metastasis. With this breast cancer metastasis to thyroid case, we want to emphasize the differential diagnosis of neoplastic lesions in the thyroid is important in those diagnosed with malignancy. If there is clinical suspicion after a nondiagnostic thyroid sampling, repeated biopsies should be performed.
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