Rheumatoid arthritis

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Rheumatoid arthritis, commonly abbreviated RA, is an autoimmune disorder.

Rheumatoid nodule

General

  • Usually only in seropositive cases.[1]

Microscopic

Features:[1]

  • Necrobiotic collagen surrounded by:
    • Plasma cells.
    • Palisading macrophages.

Notes:

  • Histomorphologically identical to Granuloma annulare.

Images:

Lung disease

See Medical lung disease.

RA may involve the lung.

Amyloidosis

See amyloidosis.

Amyloidosis may be due to RA.

See also

References

  1. 1.0 1.1 Tadrous, Paul.J. Diagnostic Criteria Handbook in Histopathology: A Surgical Pathology Vade Mecum (1st ed.). Wiley. pp. 299. ISBN 978-0470519035.
  2. 2.0 2.1 URL: http://granuloma.homestead.com/palisading.html. Accessed on: 1 November 2010.
  3. URL: http://www.pathguy.com/lectures/joints.htm. Accessed on: 1 November 2010.

External links