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Related Experiment Videos

Diffuse panbronchiolitis in rheumatoid arthritis

S Homma1, M Kawabata, K Kishi

  • 1Division of Respiratory Diseases, Toranomon Hospital, Tokyo, Japan.

The European Respiratory Journal
|September 4, 1998
PubMed
Summary
This summary is machine-generated.

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Rheumatoid arthritis (RA) can present with lung inflammation, specifically diffuse panbronchiolitis (DPB) or obliterative bronchiolitis (OB). While clinically similar, distinct histopathological findings differentiate these RA-associated lung conditions.

Area of Science:

  • Pulmonary Medicine
  • Rheumatology
  • Pathology

Background:

  • Obliterative bronchiolitis (OB) is an uncommon complication of rheumatoid arthritis (RA).
  • Diffuse panbronchiolitis (DPB), primarily seen in Japanese adults, has recently been observed in RA patients in Japan.
  • Significant clinical overlap exists between DPB and RA-associated OB, necessitating further investigation.

Observation:

  • This study evaluated three RA patients clinically diagnosed with DPB.
  • All patients presented with productive cough, exertional dyspnea, wheezing, and coarse crackles.
  • Chest radiographs revealed small nodular opacities and widespread bronchiolectasis; pulmonary function tests showed severe obstructive impairment.

Findings:

  • Two cases were pathologically confirmed as DPB (lesions in respiratory bronchioli), and one as OB (lesions in membranous bronchioli/proximal small bronchi).

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  • Clinical presentations of DPB and OB in RA patients were strikingly similar.
  • Despite clinical similarities, histopathological examination revealed distinct differences between DPB and OB.

    • Implications:

    • Diffuse panbronchiolitis may represent a novel pulmonary manifestation of rheumatoid arthritis.
    • Accurate histopathological analysis is crucial for differentiating DPB and OB in RA patients.
    • Distinguishing between these conditions is vital for appropriate therapeutic management in rheumatoid arthritis-associated lung disease.