Solitary metastasis of the clear cell variant of renal cell carcinoma into the thyroid gland

Clinical case of solitary metastasis of the clear cell variant of renal cell carcinoma into the thyroid gland was analyzed. The thyroid mass was initially considered to be benign. The diagnostic showed signs similar to thyroid follicular neoplasia. The patient was operated on. The thyroid tumor was finally diagnosed as metastasis from clear cell variant of renal cell carcinoma.