Review of a patient with confirmed pulmonary veno-occlusive disease and nonmatched perfusion defects. a) Ventilation/perfusion lung scan with multiple.

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Review of a patient with confirmed pulmonary veno-occlusive disease and nonmatched perfusion defects. a) Ventilation/perfusion lung scan with multiple nonmatched perfusion defects: right superior lobe, right basal pyramid, culmen and left inferior lobe. b, ... Review of a patient with confirmed pulmonary veno-occlusive disease and nonmatched perfusion defects. a) Ventilation/perfusion lung scan with multiple nonmatched perfusion defects: right superior lobe, right basal pyramid, culmen and left inferior lobe. b, c) Multiple histological samples from the same patient. Narrow arrow: repermeabilised old thrombus; arrowhead: fibrosed vein; wide arrow: focal lesion of pulmonary haemangiomatosis. Haematoxylin–eosin–safran staining. LPO: left posterior oblique view; RPO: right posterior oblique view; POST: posterior view. Scale bars: a) 500 μm; b) 100 μm. Andrei Seferian et al. Eur Respir J 2012;40:75-83 ©2012 by European Respiratory Society