Thyroid Metastases from Clear Cell Renal Carcinoma: Presentation of an Unusual Case and Literature Review

Abstract

Clear cell type renal cell carcinoma is a malignant tumor that can metastasize to many locations, but unusually spreads to thyroid. Therefore it is important to know the oncological background of the patient and to perform a complete immunohistochemical analysis of the thyroid lesion to obtain a correct diagnosis. Thyroidectomy can be considered in patients with no other metastasis or in those who present compressive symptoms as a palliative measure. We expose the case of a patient with clear cell type renal cell carcinoma, with a previously known bone metastasis of renal origin and symptomatic goiter containing a nodule that was found to be a metastasic lesion.