Fibrotic NSIP
The Bronchovascular Disribution in the Lower Lobes
Subpleural Sparing
Cellular NSIP
The absence of significant fibrotic component and lack of volume loss in the lower lobes makes cellular NSIP more likely
Fibrotic NSIP
Significant Volume Loss
Expansion of the Secondary Lobules in
Regions of Subpleural Sparing
Fibrotic Bands