Chronic pyelonephritis | Chronic pyelonephritis with lesion of renal medullary necrosis | Chronic pyelonephritis without lesion of renal medullary necrosis | Pyelonephritis chronic | Pyelonephritis chronic NOS | Chronic pyelitis | Xanthogranulomatous pyelonephritis | Pyelonephritis, Xanthogranulomatous | Xanthogranulomatous Pyelonephritis | Pyelonephritides, Xanthogranulomatous | Xanthogranulomatous Pyelonephritides |