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C-1500 - Radiological manifestations of xanthogranulomatous pyelonephritis.

A. Rodríguez Rodríguez1, C. Le Cacheux2, C. Asensio Moreno1; 1 Sevilla/ES 2 Seville/ES Type: Educational Exhibit
Area of Interests: Urinary Tract / Bladder, Kidney
Imaging Techniques: CT, Ultrasound
Procedures: Drainage, Surgery
Special Focuses: Infection, Abscess, Inflammation
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Learning objectives: - To review the radiological manifestations of xanthogranulomatous pyelonephritis.   - To evaluate the possible differential diagnosis of this disease.  

Background: Xanthogranulomatous pyelonephritis (PXG) is a rare form of renal granulomatous inflammatory disease that occurs as a consequence of chronic renal parenchymal infection. Histopathologically, there is a substitution of the normal renal parenchyma for an infiltrate with mononuclear lipid-filled macroph[...]

Findings and procedure details: With commonly available imaging techniques, abdominal x-ray and intravenous urography are largely unhelpful as they will show nonspecific findings. However with ultrasound and CT, we can make a more accurate diagnosis, since they allow us to identify the typical characteristics of this pathology, es[...]

Conclusion: Xanthogranulomatous pyelonephritis is a rare condition that can prove difficult to diagnose. Although ultrasound may be useful, CT is the technique of choice, as it is able to highlight the characteristic findings and also possible extrarenal extension. Occasionally, especially in the focal form or [...]

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References: 1. Craig W, Wagner B, Travis M. Pyelonephritis: Radiologic-Pathologic review. Radiographics 2008;28:255-276.   2. Kim JC. US and CT findings of Xanthogranulomatous Pyelonephritis.Journal of clinical imaging 2001; 25: 118-21.   3. Goldman S, Hartman D, Fishman E, Finizio J, Gatewood O, Sieg[...]

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