CT of xanthogranulomatous pyelonephritis: radiologic-pathologic correlation

摘要: A clinical-radiologic-pathologic correlation study was performed in 18 (17 female) patients with xanthogranulomatous pyelonephritis (XGP) CT scans available for analysis. Presenting signs and symptoms included pain (66%), urinary frequency dysuria nocturia palpable mass (56%), leukocytosis (50%), fever (50%). The duration of usually relatively short (less than 6 months), considering the extent pathologic process. In 14 patients, disease diffuse; kidney enlarged preservation reniform outline 13. renal pelvis, lined sheets lipid-laden macrophages surrounded by a marked fibrotic reaction, contracted 11 contained pelvic calculi 12. parenchyma replaced multiple, rounded, low-density areas on that corresponded to dilated calices and/or inflammatory tissue. These had enhancing rims (10 cases) preserved, compressed normal There identification unsuspected extension through capsule involvement perirenal space pararenal spaces 13, psoas muscle six. were often extensively involved minimal six reflection chronic indolent infection. four cases focal XGP appeared as lesions wall enhancement surrounding dilated, stone-filled or masses occupying one pole duplication. Extensive present two XGP. preoperative diagnosis suspected only 44% cases. It is concluded should play role planning demonstrate extrarenal poorly depicted other means.