Fig. 3From: Progressive, refractory macrophage activation syndrome as the initial presentation of anti-MDA5 antibody positive juvenile dermatomyositis: a case report and literature reviewLab trends and immunosuppressant treatments administered during the hospital course. Ferritin was used as a marker of MAS response and evidence of systemic inflammatory response while creatinine kinase (CK) was used to monitor response of myositisBack to article page