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Rheumatol Int. 2013 Apr;33(4):1065-9. doi: 10.1007/s00296-010-1650-8. Epub 2010 Dec 5.

Systemic onset juvenile idiopathic arthritis with macrophage activation syndrome misdiagnosed as Kawasaki disease: case report and literature review.

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  • 1Pediatric Rheumatology Clinic, Department of Pediatrics, Amrita Institute of Medical Sciences, AIMS Hospital, Ponekarra PO, Cochin 682041, Kerala, India.


Patients with systemic onset juvenile idiopathic arthritis (SoJIA) are rarely known to develop coronary artery dilatation. The American heart association (AHA) statement on evaluation of suspected Kawasaki disease (KD) would lead some SoJIA patients (particularly in the early stages of the disease) to be inaccurately classified as KD. In addition to the institution of inappropriate therapy with IVIG, misdiagnosis as KD can delay definitive treatment for these SoJIA patients who probably have a worse predicted outcome. We present a 6-year-old male patient with SoJIA who was initially classified as incomplete KD. The child developed life-threatening macrophage activation syndrome (MAS). Previous literature regarding coronary dilatation in SoJIA is also reviewed.

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