Rheumatoid arthritis

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Rheumatoid arthritis 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:

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.
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