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Multiple rheumatoid bursal cysts.

M Yasuda1, M Ono, T Naono

  • 1Department of Clinical Immunology, Kyushu University, Beppu Oita, Japan.

The Journal of Rheumatology
|July 1, 1989
PubMed
Summary
This summary is machine-generated.

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Rheumatoid arthritis (RA) can cause sterile, milky fluid-filled subcutaneous swellings. These findings suggest chronic rheumatoid inflammation can manifest extraarticularly in bursae, beyond joint synovium.

Area of Science:

  • Rheumatology
  • Pathology

Background:

  • Rheumatoid arthritis (RA) is a chronic autoimmune disease primarily affecting synovial joints.
  • Extraarticular manifestations of RA are common but typically involve skin, lungs, or eyes.

Observation:

  • A patient with rheumatoid arthritis presented with multiple, distinct subcutaneous swellings.
  • These swellings contained a sterile, milky fluid upon aspiration.
  • Surgical resection of the swellings revealed chronic granulomatous changes.

Findings:

  • Histopathological examination confirmed the changes were consistent with rheumatoid inflammation.
  • The findings suggest a potential for RA to cause localized, chronic inflammatory processes in subcutaneous bursae.
  • This represents an unusual extraarticular manifestation of rheumatoid arthritis.

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Implications:

  • This case expands the spectrum of recognized extraarticular manifestations of rheumatoid arthritis.
  • It highlights the importance of considering rheumatoid inflammation in the differential diagnosis of subcutaneous masses, even when presenting atypically.
  • Further research may elucidate the mechanisms behind these specific inflammatory responses in RA.