Benign etiologies and primary thyroid cancers are the most common causes of incidental thyroid nodules. Clinically evident metastases to the thyroid gland are not common and account for 2%-3% of thyroid cancers, though the incidence of thyroid metastases reaches 24% in autopsy studies.1 The most common clinically detected thyroid metastases originate from renal cell carcinoma (RCC; 48.1%).2 We report here a rare case of a man with clear-cell RCC with late recurrence in the thyroid gland as a solitary metastasis, 13 years after the primary diagnosis.
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