IMPRESSION:
Compared to chest radiographs  through .
 
 Little change in widespread basal dependent interstitial abnormality, probably
 edema.  Concurrent pneumonia could be present and not appreciated, but the
 sequence of changes and the persistent moderate cardiomegaly suggest a large
 component of edema.  Pleural effusion is presumed, but not large.  No
 pneumothorax.