[Xanthogranulomatous pyelonephritis presenting as a Grawitz tumor in a 21-year-old female patient. Case report] ].

Xanthogranulomatous pyelonephritis is a chronic inflammatory disease of the kidney characterized by destruction and replacement of the renal parenchyma with granulomatous tissue containing lipid-filled macrophages. The disease affects mainly elders, more frequent females and is difficult to differentiate it from renal neoplasms by standard diagnostic imaging methods. This case report confirms it.