PMC5107730_01
Lung biopsy pathology slides. Subpleural vein in intralobular septum with luminal compromise by proliferating fibrous tissue (arrows).
gr1.jpg
PMC5107730_01_gr1.jpg
fig1
Preliminary lung biopsy results were consistent with idiopathic PAH (IPAH); biopsy slides were sent to a specialized outside laboratory (Fig. 1).