Xanthogranulomatous pyelonephritis

Case contributed by Dr Roberto Schubert


Weight loss, fever, dull pain in the right flank and back.

Patient Data

Age: 65 years
Gender: Female

CT scan demonstrates low density rounded parenchymal collections throughout the right kidney with a central large (presumably staghorn) calculus. Also note the enlarged periaortic and pericaval lymph nodes.

Case Discussion

Appearances are characteristic of xanthogranulomatous pyelonephritis and the appearance of the kidney has been likened to that of a bear's paw.

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Case information

rID: 14172
Published: 3rd Jul 2011
Last edited: 11th Feb 2020
System: Urogenital
Inclusion in quiz mode: Included

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