Rheumatoid pleuritis
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Rheumatoid pleuritis, a form of pleural effusion, is an uncommon complication of rheumatoid arthritis, occurring in 2-3% of patients (Walker and Wright, 1967; Naylor, 1990)
Histopathology
Light microscopy reveals replacement of normal cells lining the pleura (mesothelial cells) by a layer of pseudostratified epithelioid cells, multinucleated giant macrophages, and necrotic material (Mandl et al, 1969; Lillington et al 1971)
Clinical Characteristics
Pleural effusion usually occurs in patients previously diagnosed with rheumatoid arthritis, but it can also occur concurrently with or before the development of the joint manifestations of the disease (Graham, 1990; Chou and Chang, 2002). Patients may present with the signs of pleural effusion: dullness on percussion, diminished or absent breath sounds and vocal fremitus, and egophony at the level of the pleural liquid.
Diagnosis
Diagnosis relies on the characteristic cytology of the exudative pleural fluid, which contains elongated and giant multinucleated macrophages in a sea of amorphous granular material. The absence of mesothelial cells is also characteristic (Champion, 1968). While these findings are highly specific for rheumatoid pleuritis (Nosanchuk et al, 1968; Geisinger, 1985; Engel, 1986; Montes, 1988; Shinto, 1988), rheumatoid pleuritis must be considered if more than one of the above cytologic findings are detected.
Treatment
Steroids are the mainstay of treatment for rheumatoid arthritis, and have been shown to improve rheumatoid pleuritis.
References
- Champion GD, Robertson MR, Robinson RG (1968). "Rheumatoid pleurisy and pericarditis". Ann Rheum Dis. 27 (6): 521–30. PMID 4178130.
- Chou CW, Chang SC (2002). "Pleuritis as a presenting manifestation of rheumatoid arthritis: diagnostic clues in pleural fluid cytology". Am J Med Sci. 323 (3): 158–61. PMID 11908862.
- Engel U, Aru A, Francis D (1986). "Rheumatoid pleurisy. Specificity of cytological findings". Acta Pathol Microbiol Immunol Scand [A]. 94 (1): 53–6. PMID 3962679.
- Geisinger KR, Vance RP, Prater T, Semble E, Pisko EJ (1985). "Rheumatoid pleural effusion. A transmission and scanning electron microscopic evaluation". Acta Cytol. 29 (3): 239–47. PMID 3890439.
- Graham WR (1990). "Rheumatoid pleuritis". South Med J. 83 (8): 973–5. PMID 2200144.
- Lillington GA, Carr DT, Mayne JG (1971). "Rheumatoid pleurisy with effusion". Arch Intern Med. 128 (5): 764–8. PMID 5119224.
- Mandl MA, Watson JI, Henderson JA, Wang N (1969). "Pleural fluid in rheumatoid pleuritis. Patient summary with histopathologic studies". Arch Intern Med. 124 (3): 373–6. PMID 4896636.
- Montes S, Guarda LA (1988). "Cytology of pleural effusions in rheumatoid arthritis". Diagn Cytopathol. 4 (1): 71–3. PMID 3378489.
- Naylor B (1990). "The pathognomonic cytologic picture of rheumatoid pleuritis. The 1989 Maurice Goldblatt Cytology award lecture". Acta Cytol. 34 (4): 465–73. PMID 2197838.
- Nosanchuk JS, Naylor B (1968). "A unique cytologic picture in pleural fluid from patients with rheumatoid arthritis". Am J Clin Pathol. 50 (3): 330–5. PMID 5676332.
- Shinto R, Prete P (1988). "Characteristic cytology in rheumatoid pleural effusion". Am J Med. 85 (4): 587–9. PMID 3177420.
- Walker WC, Wright V (1967). "Rheumatoid pleuritis". Ann Rheum Dis. 26 (6): 467–74. PMID 6066230.