PMC6476809_01
HRCT axial images (a, b) and sagittal multiplanar reconstructions (c) show pleuroparenchymal fibroelastosis, involving the dorsal regions of upper lobes (arrows) and the right fissure (arrowhead).
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No evidence of disease was found in the middle and in the lower lobes (Fig. 1).
Histological evaluation of VATS sampling. Pleural fibroelastosys clearly separated from lung parenchymal tissue (on the left, hematoxylin-eosin staining; on the right, Weigert staining).
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Mild deposition of silica was observed without non-necrotizing granulomas (Fig. 2, Fig. 3).