Pattern recognition in radiographs of excised air-inflated human lungs. IV XXXX alone and with other common lesions.

@entity548 @entity55 @entity4 @entity2415 @entity2542
To evaluate at autopsy the radiographic pattern of @entity2415 alone and with @entity4 , @entity548 or @entity55 in excised air-inflated lungs the distribution of these findings in 89 lungs was determined histologically on 441 sections sampled systematically. Pathologic-radiologic correlations were studied on the basis of 58 sections from 30 lung selected to represent most clearly the features in question. In mild @entity2542 ( @entity2542 ) the number and calibre of small blood vessels was often reduced. Small translucencies could appear. In moderate @entity2542 vascular changes were always visible and unevenly distributed translucencies in most cases. Some lungs looked slightly rounded. In severe @entity2542 the number of blood vessels was greatly reduced, they were displayed between extensive tissue defects, and the lung looked always rounded. Only mild @entity2542 occurred in the material. This was difficult to distinguish radiologically but could show up as a coarse reticular background with a reduced number of blood vessels, and the lung could look rounded. Paracicatricial @entity2415 appeared as translucent areas around scars. Simultaneous alveolar processes often obscured the blood vessel changes of @entity2542 and could accentuate or hide the tissue defect translucencies. The same alveolar processes were more unevenly distributed in emphysematous than in non-emphysematous lungs.
