Abstract: To the Editor:Eosinophilia commonly occurs secondary to parasitic infections,allergy,collagen-vascular disease,hypersensitivity conditions,or underlying hematologic or solid malignancies.However,eosinophilia associated with clear cell renal cell carcinoma (CCRCC) is rare.Herein,we report a case of paraneoplastic eosinophilia associated with CCRCC.