Rheumatoid arthritis
Rheumatoid arthritis, commonly abbreviated RA, is an autoimmune disorder.
Skin
Rheumatoid neutrophilic dermatitis
General
- May manifest as rheumatoid neutrophilic dermatitis - super rare.[1]
Microscopic
Features:
- Nodular and diffuse pattern.
- Neutrophils.
Joints
Main article: Joints
Rheumatic joint disease
- AKA joint with rheumatic disease.
General
Clinical:
- Tumour - swelling.
- Rubor - redness.
- Calor - heat.
- Dolor - pain.
Gross
- Irregular surface - synovial hyperplasia.
Image:
![[1]](http://www.medpath.info/MainContent/Skeletal/732.GIF){kind=link}
Microscopic
Features:[3]
- Chronic inflammation, esp. lymphocytes.
- +/-Lymphoid follicles.
- Synovial hyperplasia - with papillary or polypoid architecture.
- Synoviocytes may show binucleation and mild atypia.
- +/-Fibrin.
- +/-Bone.
- +/-Cartilage.
Note:
- Changes are non-specific - DDx includes other rheumatic diseases (systemic lupus erythematosus, psoriatic arthritis).
DDx:
- Infected joint.
Images:
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Femoral head
FEMORAL HEAD, LEFT, HIP ARTHROPLASTY: - CHRONIC SYNOVITIS WITH SYNOVIAL HYPERPLASIA AND LOSS OF CARTILAGE. - SEE COMMENT. COMMENT: The findings are consistent with rheumatoid arthritis.
Hand
SYNOVIUM, LEFT HAND, EXCISION: - SYNOVIAL HYPERPLASIA. - CHRONIC AND FOCAL ACUTE SYNOVITIS. - FIBRINOUS EXUDATE. - GRANULATION TISSUE AND HEMOSIDERIN-LADEN MACROPHAGES. - SEE COMMENT. COMMENT: The findings are consistent with rheumatoid arthritis.
Rheumatoid nodule
General
- Usually only in seropositive cases.[5]
- Typically close to a joint.[citation needed]
Microscopic
- Necrotic collagen bundles with fibrin surrounded by:
- Palisading granuloma.
- +/-Eosinophils.
Notes:
- Histomorphologically very similar to Granuloma annulare.
DDx:
- Granuloma annulare - has mucin in the core of the granuloma.[6]
- Necrobiosis lipoidica.
Images:
Pleural disease
- See Rheumatoid pleuritis.
Lung disease
- See Medical lung disease.
RA may involve the lung.
Miscellaneous
Amyloidosis
- See Amyloidosis.
Amyloidosis may be due to RA.
Felty syndrome
RA may occur in Felty syndrome -- the triad:[9]
- Rheumatoid arthritis.
- Splenomegaly.
- Neutropenia.
Felty syndrome is associated with large granular lymphocytic leukemia.[9][10]
See also
References
- ↑ Mashek, HA.; Pham, CT.; Helm, TN.; Klaus, M. (Jun 1997). "Rheumatoid neutrophilic dermatitis.". Arch Dermatol 133 (6): 757-60. PMID 9197831.
- ↑ URL: http://www.medpath.info/MainContent/Skeletal/Joint_02.html. Accessed on: 10 November 2012.
- ↑ Humphrey, Peter A; Dehner, Louis P; Pfeifer, John D (2008). The Washington Manual of Surgical Pathology (1st ed.). Lippincott Williams & Wilkins. pp. 660. ISBN 978-0781765275.
- ↑ URL: http://library.med.utah.edu/WebPath/EXAM/IMGQUIZ/msfrm.html. Accessed on: 5 December 2010.
- ↑ 5.0 5.1 Tadrous, Paul.J. Diagnostic Criteria Handbook in Histopathology: A Surgical Pathology Vade Mecum (1st ed.). Wiley. pp. 299. ISBN 978-0470519035.
- ↑ 6.0 6.1 Busam, Klaus J. (2009). Dermatopathology: A Volume in the Foundations in Diagnostic Pathology Series (1st ed.). Saunders. pp. 52. ISBN 978-0443066542.
- ↑ 7.0 7.1 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.
- ↑ 9.0 9.1 Mitchell, Richard; Kumar, Vinay; Fausto, Nelson; Abbas, Abul K.; Aster, Jon (2011). Pocket Companion to Robbins & Cotran Pathologic Basis of Disease (8th ed.). Elsevier Saunders. pp. 328. ISBN 978-1416054542.
- ↑ Liu, X.; Loughran, TP. (Jul 2011). "The spectrum of large granular lymphocyte leukemia and Felty's syndrome.". Curr Opin Hematol 18 (4): 254-9. doi:10.1097/MOH.0b013e32834760fb. PMID 21546829.