RT Journal Article SR Electronic T1 Is macrophage activation syndrome in Kawasaki disease underrecognized? JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP jrheum.200361 DO 10.3899/jrheum.200361 A1 Valentina Natoli A1 Silvia Rosina A1 Angelo Ravelli YR 2020 UL http://www.jrheum.org/content/early/2020/05/22/jrheum.200361.abstract AB Kawasaki disease (KD) is an acute vasculitis of unknown etiology that predominantly affects children < 5 years of age. It is now the leading cause of acquired heart disease in the pediatric age in developed countries1.