Thyroid Under Siege: A Rare Manifestation of Breast Cancer Metastasis

Breast cancer is the most frequently diagnosed cancer in women all over the world and commonly metastasizes to lymph nodes, bones, lungs liver and brain. There is a slight increase in incidence of second primary malignancy in thyroid gland of patients with breast cancer. However, thyroid gland is a rare site of breast cancer metastatic spread. We present a rare case of breast carcinoma with incidental uptake on F18-FDG PET-CT which was histologically confirmed to be thyroid cancer.