FINDINGS:
PA and lateral views of the chest provided.   There is a moderate to large
 right pleural effusion with associated compressive atelectasis involving the
 right middle and lower lobes.  Heart size is difficult to fully characterize
 due to silhouetting of the right heart border.  The left lung appears clear. 
 There is mild hilar congestion with cephalization and possible mild
 interstitial pulmonary edema.  No pneumothorax.  Mediastinal contour is
 normal.  Bony structures are intact.

IMPRESSION:
Moderate to large right pleural effusion with associated right middle and
 lower lobe atelectasis.  Mild hilar congestion with possible mild interstitial
 edema.