December 16, 2019 Nonspecific interstitial pneumonia in refractory systemic juvenile idiopathic arthritis responded to tocilizumab treatment Nonspecific interstitial pneumonia (NSIP) is a rare pulmonary complication in systemic juvenile idiopathic arthritis (SJIA). read more interleukin-6, macrophage activation syndrome, nonspecific interstitial pneumonia, refractory systemic juvenile idiopathic arthritis, tocilizumab