Etiologies of FUo—— Malignancy ■ Lymphoma a Fever is a well-recognized manifestation 口 Pel-Ebstein phenomenon 口 Source of fever→ production of cytokines a Fever is a negative prognostic factor Renal cell Carcinoma(Adult 口20%→ Fever a Microscopic hematuria/ErythromytosisEtiologies of FUO——Malignancy  Lymphoma: Fever is a well-recognized manifestation. Pel-Ebstein phenomenon. Source of fever → production of cytokines. Fever is a negative prognostic factor …  Renal Cell Carcinoma (Adult) 20% → Fever Microscopic hematuria/Erythromytosis