Abstract
Tumor necrosis factor (TNF) alpha inhibitors are effective in the treatment of inflammatory rheumatic diseases. Despite their effectiveness, anti-TNF drugs have some drawbacks such as severe adverse effects including infections and possibly lymphoproliferative disorders. In this report we described a case of juvenile idiopathic arthritis patient who developed thymic enlargement (true thymic hyperplasia), mediastinal lymphadenopathy and pleurisy associated with systemic symptoms under Etanercept treatment. The clinical presentation was highly suggestive of malignancy and the patient underwent diagnostic mediastinoscopy with biopsy.
Similar content being viewed by others
References
Bongartz T, Sutton AJ, Sweeting MJ, Buchan I, Matteson EL, Montori V (2006) Anti-TNF antibody therapy in rheumatoid arthritis and the risk of serious infections and malignancies: systematic review and meta-analysis of rare harmful effects in randomized controlled trials. JAMA 295:2275–2285
Yarom N, Zissin R, Apter S, Hertz M, Rahimi-Levene N, Gayer G (2007) Rebound thymic enlargement on CT in adults. Int J Clin Pract 61:562–568
Nakamura T, Murakami M, Horiguchi H, Nagasaka S, Ishibashi S, Mori M, Ishikawa SE (2004) A case of thymic enlargement in hyperthyroidism in a young woman. Thyroid 14:307–310
Defriend DE, Coote JM, Williams MP, Copplestone JA (2001) Thymic enlargement in an adult following a severe infection. Clin Radiol 56:331–333
Kim MY (2008) Roles of embryonic and adult lymphoid tissue inducer cells in primary and secondary lymphoid tissues. Yonsei Med J 49:352–356
Ryffel B, Brockhaus M, Greiner B, Mihatsch MJ, Gudat F (1991) Tumour necrosis factor receptor distribution in human lymphoid tissue. Immunology 74:446–452
Grech AP, Riminton DS, Gabor MJ, Hardy CL, Sedgwick JD, Godfrey DI (2000) Increased thymic B cells but maintenance of thymic structure, T cell differentiation and negative selection in lymphotoxin-alpha and TNF gene-targeted mice. Dev Immunol 8:61–74
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Sari, I., Binicier, O., Birlik, M. et al. Thymic enlargement in a patient with juvenile idiopathic arthritis during etanercept therapy. Rheumatol Int 29, 591–593 (2009). https://doi.org/10.1007/s00296-008-0726-1
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00296-008-0726-1