Fig. 3

Pathological findings of the right lung resected or the lung transplantation (a) A macroscopic image of the upper lobe of the resected right lung. Cystic airspace enlargement and white fibrosis were observed in the subpleural area. (b)-(e) Microscopic images of the lung (Elastica-Masson stain). b A loupe image of an area showed a mixture of distal acinar emphysema and perilobular fibrosis and honeycombing like a usual interstitial pneumonia pattern. c The area with thin-walled cystic airspace enlargement showed emphysema. d fibroblastic foci were observed in fibrotic areas. e The area with severe fibrosis showed honeycomb-like change with severe destruction of lung structure