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[Pseudo-tuberculous pyelonephritis]
S Valerdiz Casasola1, L Parra Muntaner, J García Alonso
1Servicio de Anatomía Patológica, Hospital Camino de Santiago, Ponferrada, Leon, España.
Archivos Espanoles De Urologia
|March 1, 1994
Summary
This study details a rare case of caseating granulomatous pyelonephritis in a 67-year-old woman, mimicking renal tuberculosis without detected microorganisms. This highlights a unique presentation of kidney inflammation and stones.
Area of Science:
- Nephrology
- Pathology
- Infectious Diseases
Background:
- Pyelonephritis is a common kidney infection, often bacterial.
- Nephrolithiasis (kidney stones) can complicate or predispose to pyelonephritis.
- Granulomatous inflammation in the kidney can be associated with infections like tuberculosis.
Observation:
- A 67-year-old woman presented with symptoms suggestive of kidney inflammation and stones.
- Renal biopsy revealed caseating granulomas within the renal parenchyma.
- The granulomatous changes closely resembled those seen in renal tuberculosis.
Findings:
- Despite the histological appearance, extensive microbiological investigations were negative for Mycobacterium tuberculosis and other common pathogens.
- No microorganisms were identified in renal tissue or urine cultures.
- This represents the second reported case of non-tuberculous caseating granulomatous pyelonephritis associated with nephrolithiasis.
Implications:
- This case expands the differential diagnosis for granulomatous kidney disease.
- It underscores the importance of considering non-infectious or atypical infectious causes even with tuberculosis-like histology.
- Further research may be needed to elucidate the etiology and optimal management of such rare conditions.