This report describes one woman who was 54 years old when she had breast cancer that later spread to her thyroid gland. The patient received radiotherapy, chemotherapy, and endocrine therapy for her breast cancer. She is still alive, though the study did not report how long she has lived or any specific survival rates. Because this is a single case, the results cannot be used to predict outcomes for other patients. The main point is that doctors should suspect breast cancer if a patient with a history of the disease develops new thyroid nodules. Diagnosis often involves fine-needle aspiration and immunohistochemistry tests. Surgery is the main treatment option when needed. This information comes from a case report published as a review, which means it shares details of one experience rather than testing a broad group of people. Readers should understand that one story does not prove what happens to everyone. Always talk with a doctor about personal risks and treatment choices.
Case report review highlights suspicion of breast cancer metastasis to thyroid in a 54-year-old womanBreast cancer can spread to the thyroid gland in rare cases
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Key Takeaway
Consider high suspicion of breast cancer origin in thyroid nodules for patients with prior breast cancer.
This publication is a case report review focusing on the diagnosis and treatment of breast cancer metastasis to the thyroid. The scope is limited to a single patient, a 54-year-old woman with a history of breast cancer. The setting is clinical practice, and the sample size is one. The primary outcome of patient survival is reported as the patient being alive, while follow-up duration was not reported.
The authors synthesize that if a patient with a history of breast cancer has newly developed thyroid nodules, the clinician should highly suspect the origin of the tumor. Preoperative fine-needle aspiration biopsy and immunohistochemistry are identified as the main methods for diagnosis. Surgery is described as the major treatment. No adverse events, discontinuations, or tolerability data were reported for this single case.
The review acknowledges limitations inherent to a single case report, noting that the sample size is one and follow-up was not reported. Funding or conflicts of interest were not reported. The practice relevance emphasizes the need for high suspicion in this specific clinical scenario. The certainty of these findings is constrained by the observational nature of a single case.
What this means for you:
Doctors should suspect breast cancer if a patient with a history of the disease develops new thyroid nodules. More on Cancer
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View Original Abstract ↓
Metastatic thyroid cancer originating from breast cancer is rare and often misdiagnosed in clinical practice. Early identification, diagnosis, and treatment are the main way to improve prognosis. This case reports describes a unique case of breast cancer metastasis to the thyroid 16 years after the diagnosis of breast cancer in order to enhance clinicians awareness to this rare disease.Case reportA 54-year-old woman was diagnosed with left breast ductal carcinoma + invasive lobular carcinoma (T2N2M0, stage IIIA) 16 years ago. Her condition became stable after radiotherapy, chemotherapy, and endocrine therapy. Recent physical examination indicated a C-TIRADS-4B mass in the right thyroid gland, which was indicative of thyroid malignancy. Radical thyroid surgery was performed for thyroid cancer. Postoperative pathology and immunohistochemistry revealed that the cancer originated from the breast and positron emission tomography–computed tomography (PET-CT) indicated multiple systemic bone metastases. After multidisciplinary consultation, endocrine therapy and chemotherapy were administered. Currently, the patient is alive.ConclusionBreast cancer metastasis to the thyroid is rare. If a patient with a history of breast cancer has newly developed thyroid nodules, the clinician should highly suspect the origin of the tumor. Preoperative FNAB and immunohistochemistry are the main methods for diagnosis and surgery is the major treatment.
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