What is NSIP?

Varying degrees of inflammation and fibrosis temporally uniform, scattered loci of pneumonia in 50%, accumulation of macrophages mimicking DIP 30%, key differentiating it from UIP is temporal uniformity May be subacute, over weeks (not years like IPF) Younger Pt, lymphocytosis seen, better prognosis than UIP, responsive to corticosteroids 5-year survival exceeds 70%, but still high mortality for fibrotic NSIP