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Intractable Otitis Media Presenting as Falsely Positive for Proteinase 3-ANCA: A Case Report

Masahiro Okada1, Hideo Ogawa1, Koichiro Suemori2

  • 1Department of Otolaryngology, Head and Neck Surgery, Ehime University School of Medicine, Toon, Japan.

The Journal of International Advanced Otology
|September 27, 2018
PubMed

Insights

This case study highlights methicillin-resistant Staphylococcus aureus (MRSA) otitis media mimicking autoimmune disease. Effective antibiotic treatment resolved symptoms, despite persistent false-positive proteinase 3 (PR3)-antineutrophil cytoplasmic antibodies (ANCA).

Area of Science:

  • Infectious Diseases
  • Immunology
  • Otolaryngology

Background:

  • Otitis media can be caused by various pathogens, including antibiotic-resistant bacteria.
  • Proteinase 3-antineutrophil cytoplasmic antibodies (PR3-ANCA) are typically associated with autoimmune vasculitis.
  • Distinguishing infectious from autoimmune causes of specific symptoms is crucial for accurate diagnosis and treatment.

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