FINDINGS:
Blunting of the right costophrenic angle suggests a small right pleural
 effusion.  Overlying right base opacity may be due to atelectasis however,
 infectious process is not excluded.  There is likely left base atelectasis. 
 Interstitial appearing opacity at the right lung apex with upward retraction
 of the right hilum likely consistent with postradiation change, as seen on
 chest CT from .

IMPRESSION:
New blunting of the right costophrenic angle raises concern for small right
 pleural effusion with overlying atelectasis.  Right base consolidation is
 difficult to exclude.  Likely left base atelectasis.
 
 Right upper hemi thorax post radiation change.