FINDINGS:
Lung volumes are low.  Heart size is mildly enlarged.  Mediastinal and hilar
 contours are unremarkable.  The pulmonary vascularity is not engorged.  There
 is no focal consolidation, pleural effusion or pneumothorax.  There is minimal
 atelectasis in the lung bases.  There are multiple old remote bilateral rib
 fractures.  Mild loss of height of multiple thoracic vertebral bodies is
 present with diffuse demineralization, similar to the prior study.

IMPRESSION:
Mild bibasilar atelectasis.