FINDINGS:
The right hemidiaphragm remains elevated with overlying atelectasis.  Left
 base atelectasis is seen, likely similar to prior, underlying infection or
 aspiration not entirely excluded.  No pleural effusion or pneumothorax is
 seen.  The cardiac and mediastinal silhouettes are stable.

IMPRESSION:
Left base atelectasis is seen, likely similar to prior, underlying infection
 or aspiration not entirely excluded.