Unilateral pleuroparenchymal fibroelastosis as a rare form of idiopathic interstitial pneumonia: A case report

Figure 3 Transbronchial lung biopsy specimen in right upper lobe. A: On higher magnification view, hematoxylin and eosin-stained images revealed dense fragmentation and dilated alveolar space surrounding alveolar with elastosis; B: Elastic van Gieson stain demonstrated septal elastosis (orange arrows) with intra-alveolar collagenosis.