Figure 1
From: Remodeling of the pulmonary artery in idiopathic pleuroparenchymal fibroelastosis

Representative examples of Elastica van Gieson-stained sections of the pulmonary arteries from the control lung (a), and patients with IPF (b), and IPPFE (c). (b) shows medial hypertrophy with muscularization, and (c) shows adventitial collagenous thickening and medial elastosis including thickening of the inner and outer elastic lamina.