Fever of unknown origin (FUO) and a renal mass: Renal cell carcinoma, renal tuberculosis, renal malakoplakia, or xanthogranulomatous pyelonephritis?
Keywords: Hypernephroma; Elevated ferritin levels; Highly elevated ESR; Chronic thrombocytosis; Michaelis-Gutmann bodies; Lipid-laden macrophages; Recurrent UTIs; Mimics of pyelonephritis;