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KEY FACTS
Terminology
Imaging
Pathology
Clinical Issues
TERMINOLOGY
Abbreviations
- Xanthogranulomatous pyelonephritis (XGP)
Definitions
- Chronic renal inflammation usually associated with longstanding urinary calculus obstruction (75%)
- Renal parenchyma is gradually replaced by lipid-laden macrophages
- Greek prefix "xantho-" refers to yellow color of fat
- Diffuse (> 80%) and focal (< 20%) forms
- Diffuse: Due to obstruction at ureteropelvic junction
- Focal or segmental: Due to obstruction of single infundibulum or 1 moiety of duplex system
- 3 stages of XGP: Intrarenal → perirenal → perinephric ± retroperitoneal involvement
IMAGING
General Features
Ultrasonographic Findings
CT Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Selected References
- Sweet DE et al: Infiltrative renal malignancies: imaging features, prognostic implications, and mimics. Radiographics. 41(2):487-508, 2021
- Diamond M et al: Imaging of nontraumatic upper urinary tract emergencies. Semin Roentgenol. 55(2):180-196, 2020
- Karaosmanoglu AD et al: Imaging findings of infectious and inflammatory diseases of the urinary system mimicking neoplastic diseases. Abdom Radiol (NY). 45(4):1110-21, 2020
- Patiño A et al: Review of imaging findings in urinary tract infections. Semin Ultrasound CT MR. 41(1):99-105, 2020
- Vernuccio F et al: CT imaging of acute and chronic pyelonephritis: a practical guide for emergency radiologists. Emerg Radiol. 27(5):561-567, 2020
- Ifergan J et al: Imaging in upper urinary tract infections. Diagn Interv Imaging. 93(6):509-19, 2012
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References
Tables
Tables
KEY FACTS
Terminology
Imaging
Pathology
Clinical Issues
TERMINOLOGY
Abbreviations
- Xanthogranulomatous pyelonephritis (XGP)
Definitions
- Chronic renal inflammation usually associated with longstanding urinary calculus obstruction (75%)
- Renal parenchyma is gradually replaced by lipid-laden macrophages
- Greek prefix "xantho-" refers to yellow color of fat
- Diffuse (> 80%) and focal (< 20%) forms
- Diffuse: Due to obstruction at ureteropelvic junction
- Focal or segmental: Due to obstruction of single infundibulum or 1 moiety of duplex system
- 3 stages of XGP: Intrarenal → perirenal → perinephric ± retroperitoneal involvement
IMAGING
General Features
Ultrasonographic Findings
CT Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Selected References
- Sweet DE et al: Infiltrative renal malignancies: imaging features, prognostic implications, and mimics. Radiographics. 41(2):487-508, 2021
- Diamond M et al: Imaging of nontraumatic upper urinary tract emergencies. Semin Roentgenol. 55(2):180-196, 2020
- Karaosmanoglu AD et al: Imaging findings of infectious and inflammatory diseases of the urinary system mimicking neoplastic diseases. Abdom Radiol (NY). 45(4):1110-21, 2020
- Patiño A et al: Review of imaging findings in urinary tract infections. Semin Ultrasound CT MR. 41(1):99-105, 2020
- Vernuccio F et al: CT imaging of acute and chronic pyelonephritis: a practical guide for emergency radiologists. Emerg Radiol. 27(5):561-567, 2020
- Ifergan J et al: Imaging in upper urinary tract infections. Diagn Interv Imaging. 93(6):509-19, 2012
