Rheumatoid arthritis
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:
- Rheumatoid nodule (granuloma.homestead.com).[2]
- Rheumatoid nodule (granuloma.homestead.com).[2]
- Rheumatoid nodule (utah.edu).[3]
Lung disease
- See Medical lung disease.
RA may involve the lung.
Amyloidosis
- See amyloidosis.
Amyloidosis may be due to RA.
See also
References
- ↑ 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.
- ↑ 2.0 2.1 URL: http://granuloma.homestead.com/palisading.html. Accessed on: 1 November 2010.
- ↑ URL: http://www.pathguy.com/lectures/joints.htm. Accessed on: 1 November 2010.