Rheumatoid arthritis

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

Joints

Microscopic

Features:

  • Chronic inflammation (e.g. lymphocytes).

Images:


Rheumatoid nodule

General

  • Usually only in seropositive cases.[2]

Microscopic

Features:[2]

  • 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. URL: http://library.med.utah.edu/WebPath/EXAM/IMGQUIZ/msfrm.html. Accessed on: 5 December 2010.
  2. 2.0 2.1 Tadrous, Paul.J. Diagnostic Criteria Handbook in Histopathology: A Surgical Pathology Vade Mecum (1st ed.). Wiley. pp. 299. ISBN 978-0470519035.
  3. 3.0 3.1 URL: http://granuloma.homestead.com/palisading.html. Accessed on: 1 November 2010.
  4. URL: http://www.pathguy.com/lectures/joints.htm. Accessed on: 1 November 2010.

External links