Pleuroparenchymal Fibroelastosis: A New Entity within the Spectrum of Rare Idiopathic Interstitial Pneumonias

Figure 2

Histological features of Case  1 (surgical lung biopsy specimen). (a) Microscopic image showing sparsely cellular dense connective tissue with small vessels. Hematoxylin-eosin (HE) 100x. (b) At high power inset in area of dense fibrosis with multiple capillaries, without inflammatory infiltrate appearance. HE 250x. (c) Microscopic image shows the presence of abundant elastic fibers irregularly grouped. Orcein stain 100x. (d) Microscopic appearance of the image (b), visualized by fluorescence. Elastic fibers, which shine for eosin autofluorescence, can be observed. Fluorescence microscopy 250x.

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