TY - JOUR T1 - Predictive Value of Musculoskeletal Ultrasound for Flares in Juvenile Idiopathic Arthritis JF - The Journal of Rheumatology JO - J Rheumatol SP - 113 LP - 113 DO - 10.3899/jrheum.180735 VL - 46 IS - 1 AU - JOHANNES ROTH Y1 - 2019/01/01 UR - http://www.jrheum.org/content/46/1/113.1.abstract N2 - I have read with great interest the recent publication by Zhao, et al1 on the predictive value of musculoskeletal ultrasound for flares of patients with juvenile idiopathic arthritis that is clinically inactive. Based on their evaluation, the authors suggest that the positive predictive value (PPV) of ultrasound (US) findings for clinical flares is very low at 12% and that a second US had even less PPV. The authors describe that synovitis on US was assessed through B-mode, identifying effusion and synovial hypertrophy as well as Doppler US.Looking at their results and one table in particular, it is nevertheless striking that 11 wrist joints were considered abnormal on US with all … Address correspondence to Dr. J. Roth. E-mail: jroth{at}cheo.on.ca ER -