Abstract
Small synovial cysts are a common manifestation of juvenile idiopathic arthritis; large brachial cysts, however, are a rare sign of the disease and they must be differentiated from other soft tissue swelling which are not related to articular involvement. We describe the case of three children with juvenile idiopathic arthritis who came to our attention with large synovial cysts. Ultrasonographic examination and MRI were performed in all cases, showing the real nature of the swelling and the connection to the joint. In all cases, swelling reduced and then disappeared with control of disease activity; in two cases, they reappeared in coincidence with a severe relapse of juvenile idiopathic arthritis.
Brachial swellings represent a diagnostic challenge because they can be the clinical expression of a variety of diseases. In children with juvenile idiopathic arthritis who present with a sudden swelling of the upper arm, synovial cysts must be considered in the diagnostic workout, because they are a possible rare manifestation of juvenile idiopathic arthritis.
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References
Bamzai A, Krieger M, Kretschmer RR (1978) Synovial cysts in juvenile rheumatoid arthritis. Ann Rheum Dis 37:101–103
Fang CSJ, McCarthy CL, McNally EG (2004) Intramuscular dissection of Baker’s cyst: report on three cases. Skeletal Radiol 33:367–371
Bloom BJ, Tucker LB, Miller LC et al (1995) Bicipital synovial cysts in juvenile rheumatoid arthritis: clinical description and sonographic correlation. J Rheumatol 22:1953–1955
Roth J, Scheer I, Kraft S et al (2006) Uncommon synovial cyst in children. Eur J Pediatr 165:178–181
Petty RE, Southwood TR, Manners P et al (2004) International League of Associations for Rheumatology. International League of Associations for Rheumatology classification of juvenile idiopathic arthritis: second revision, Edmonton, 2001. J Rheumatol 31:390–392
Lindehammar H, Lindvall B (2004) Muscle involvement in juvenile idiopathic arthritis. Rheumatology 43:1546–1554
Miller ML, Levinson L, Pachman LM et al (1995) Abnormal muscle MRI in a patient with systemic juvenile arthritis. Pediatr Radiol 25:S107–S108
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Dell’Era, L., Vercellesi, P., Forzenigo, L.V. et al. Synovial cyst in juvenile idiopathic arthritis. Clin Rheumatol 27 (Suppl 2), 43–45 (2008). https://doi.org/10.1007/s10067-008-0860-x
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DOI: https://doi.org/10.1007/s10067-008-0860-x