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Xanthogranulomatous pyelonephritis with multiple cutaneous fistulae

R G Gerridzen1, W Morris

  • 1University of Ottawa and Ottawa Civic Hospital, Ottawa, Ontario.

Insights

Xanthogranulomatous pyelonephritis, a kidney inflammation due to bacterial infection, can rarely cause sinus formation. This case highlights sinuses developing post-nephrectomy, a rare occurrence.

Area of Science:

  • Nephrology
  • Pathology
  • Infectious Diseases

Background:

  • Xanthogranulomatous pyelonephritis (XGP) is a severe kidney inflammation caused by bacterial infection.
  • Histologic diagnosis typically occurs after kidney removal (nephrectomy).
  • Rarely, XGP can present with cutaneous fistulae and internal sinus tracts.

Purpose of the Study:

  • To report an unusual case of Xanthogranulomatous pyelonephritis.
  • To describe the late development of multiple internal and cutaneous sinuses.
  • To emphasize the potential for sinus formation two months after nephrectomy.

Main Methods:

  • Case report review.
  • Clinical and pathological data analysis.
  • Literature review on XGP and sinus formation.

Main Results:

  • A patient developed multiple internal and cutaneous sinuses.
  • Sinus formation was observed two months post-nephrectomy.
  • This presentation is a rare complication of Xanthogranulomatous pyelonephritis.

Conclusions:

  • Xanthogranulomatous pyelonephritis can lead to sinus formation, even after nephrectomy.
  • Late-onset sinus tracts are a rare but possible sequela.
  • This case underscores the importance of considering XGP complications beyond initial treatment.

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