Respiratory Medicine Case Reports (Jan 2017)

A case of proteinase 3 anti-neutrophil cytoplasmic antibody (PR3-ANCA) positive/IgG4-related lung disease

  • Hirokazu Touge,
  • Katsuyuki Tomita,
  • Akira Yamasaki,
  • Eiji Shimizu

DOI
https://doi.org/10.1016/j.rmcr.2017.01.001
Journal volume & issue
Vol. 20, no. C
pp. 92 – 94

Abstract

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IgG4-related lung disease (IgG4-RLD) is a rare and chronic progressive autoimmune disease. We report a case of IgG4-related inflammatory pseudo-tumor of the lung that was seropositive for proteinase 3 anti-neutrophil cytoplasmic antibody (PR3-ANCA). A 61-year-old male had a mass lesion in the right lower lung field in chest X-ray. Transbronchial lung biopsy resulted in a pathological diagnosis of IgG4-RLD. The condition was improved by hormonal therapy.

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