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Renal cell carcinoma is a malignant tumor that arises in the kidney parenchyma. For many years, sunitinib has represented the mainstay of medical treatment for metastatic renal cell carcinoma. Herein, we present the case of a 66-year-old woman with metastatic clear cell renal carcinoma undergoing treatment with sunitinib for two years that developed encephalic leukocytoclastic vasculitis, probably due to a paraneoplastic syndrome.