Xanthogranulomatous Pyelonephritis: A Retrospective Review of 21 Cases

Xanthogranulomatous Pyelonephritis is a relatively uncommon disorder of unknown etiology, a rare form of chronic pyelonephritis that is usually characterized by extensive destruction of the involved kidney. The renal parenchyma is replaced by lipid-laden macrophages referred to as xanthoma cells. It is increasingly being recognized as an important cause of renal morbidity worldwide. Patients who had nephrectomy had favorable outcome