| Summary: | Xanthogranulomatous pyelonephritis (XGP) is rare and aggressive form of chronic infectious pyelonephritis. No single clinical or radiological feature is diagnostic of XGP. A 75-year-old man with prostatic enlargement presented with difficulty and burning micturition fever, abdominal and flank pain. X-ray, ultrasonography and computed tomography scan diagnosis was right kidney pyonephrosis. Intravenous urography revealed non-excretory right kidney. Right nephrectomy was done. Histological diagnosis of XGP was made. In all patients of prostatic enlargement, renal function must be assessed for the extent of damage. Surgery is the treatment choice in most cases. Pre- and post-operative antibiotics are key factors for successful management and better prognosis.
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