A Rare Case of Metastasis of Renal Clear Cell Carcinoma To the Thyroid Gland, Presenting As A Goiter Nodule, Three Years After Nephrectomy

Thyroid gland metastatic tumors are rare in clinical practice. clear cell rcc is one of common metastatic tumors to thyroid. we here reported a case of incidentally found clear cell renal carcinoma metastasis to the thyroid gland 3 years after nephrectomy, in the thyroidectomy procedure performed for the patient due to the thyroid enlargement caused by multinodular goiter. a 65-year-old iranian man with a history of multinodular goiter referred to our surgery clinic for thyroidectomy because of compressive effects on the trachea. patient had a history of nephrectomy due to clear cell rcc 3 years ago. after thyroidectomy, gross and histological examination of thyroid revealed clear cell renal carcinoma metastasis to the thyroid gland in the setting of a multinodular goiter. the diagnosis was confirmed by immunohistochemistry staining. patients with multinodular goiter are more prone to present with metastasis to thyroid gland if they have a history of malignancy, especially renal cell carcinoma.