FINDINGS:
The heart size remains mildly enlarged.  Mediastinal and hilar contours are
 unchanged with calcification of the aortic knob is again noted.  There is
 minimal bibasilar atelectasis.  No focal consolidation, pleural effusion or
 pneumothorax is present.  No pulmonary vascular congestion is visualized. 
 Anterior osteophytes are noted within the thoracic spine.

IMPRESSION:
Mild bibasilar atelectasis.