Fig. 2: Pathologic features of UIP. Same patient/case as Fig. 1.
From: Usual interstitial pneumonia (UIP): a clinically significant pathologic diagnosis
A Scarring distorts lung architecture (arrows). B This image shows the difference between interstitial fibrosis without architectural distortion (arrows) and scarring (arrowheads). Scarring is the most essential feature for the diagnosis of UIP.
