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[Emphysematous pyelonephritis: radiologic diagnosis].
M I Kably1, F Elamraoui, N Chikhaoui
1Service de radiologie des urgences, CHU Averroès, 20, Lot Mimosas, boulevard Ibnou-Sina, Casablanca 20100, Maroc. kably75@hotmail.com
Annales D'Urologie
|November 11, 2003
Summary
Emphysematous pyelonephritis (EPN), a severe kidney infection often caused by E. coli, requires prompt diagnosis. Early radiologic imaging is crucial for detecting severe EPN cases in diabetic patients.
Area of Science:
- Nephrology
- Infectious Diseases
- Radiology
Background:
- Emphysematous pyelonephritis (EPN) is a rare, severe necrotizing infection of the kidney.
- Escherichia coli is the most common pathogen, implicated in 60% of cases.
- Risk factors include diabetes mellitus, urinary tract obstruction, and prior infection.
Observation:
- Conventional radiography detects renal emphysema in 85% of cases.
- Ultrasonography reveals hyperechoic areas indicative of gas.
- CT scan offers precise localization of gas within the renal parenchyma and is the optimal imaging modality.
Findings:
- EPN can be radiologically classified into 4 grades based on disease progression.
- Medical management alone is associated with a poor prognosis.
- Prompt treatment of urinary tract infections in diabetic patients is essential.
Implications:
- Early radiologic exploration is vital for detecting severe EPN.
- Timely diagnosis and intervention can improve patient outcomes.
- Understanding risk factors and diagnostic imaging is key for managing this severe condition.