FINDINGS:
The heart is mildly enlarged.  There is tortuosity of the descending
 aorta.  Sternotomy wires and mitral valve replacements are noted.  There is
 increased opacities at the lung bases bilaterally which likely reflect
 atelectasis.  No large pleural effusion or pneumothorax is identified. Note is
 made of bilateral rib deformities.

IMPRESSION:
Bibasilar opacities likely reflect atelectasis.