Fig. 1
From: The usual Interstitial pneumonia pattern in autoimmune rheumatic diseases
Pathological ancillary findings in ARDs-related UIP pattern A] Overview of a surgical biopsy: normal lung architecture is distorted by fibrosis with UIP pattern (H&E, 20x). B] The same biopsy, at higher magnification: evidence of nodular hyperplastic germinal centre, interstitial and subpleural located C] (green arrows, H&E, 150x; 100x). D] Slight septal chronic infiltrate, in association with pleuritis in an almost normal lung parenchyma spared by fibrosis (H&E, 100x). E] Fibroblastic polyps with endoalveolar projection in a OP pattern (H&E, 200x)