TY - JOUR T1 - MS score in systemic juvenile idiopathic arthritis: suitable for routine use? JF - Annals of the Rheumatic Diseases JO - Ann Rheum Dis DO - 10.1136/annrheumdis-2019-216041 SP - annrheumdis-2019-216041 AU - Huihui Chi AU - Zhihong Wang AU - Chengde Yang AU - Yutong Su Y1 - 2019/08/02 UR - http://ard.bmj.com/content/early/2019/08/01/annrheumdis-2019-216041.abstract N2 - We read with great interest the article by Minoia et al1 which reported a new scoring tool for the classification of macrophage activation syndrome (MAS), a potentially life-threatening complication requiring prompt treatment, in patients with systemic juvenile idiopathic arthritis (sJIA). Although the haemophagocytic lymphohistiocytosis diagnostic criteria were widely used, early diagnosis of MAS is still challenging.2 3 The creation of the MAS/sJIA (MS) score provided a new tool for early detection of MAS in sJIA. However, a few points of concern raised when using the MS score in our centre.First, the data of patients with MAS were recorded at the onset of … ER -