FINDINGS:
AP portable view of the chest.   The lungs are relatively hyperinflated. 
 Linear opacities at the left lung base again suggestive of atelectasis versus
 scarring.  Indistinct pulmonary vascular markings are seen particularly in the
 left upper and right lower lung.  This could be due to asymmetric mild
 interstitial edema in the setting of the background of chronic lung disease
 noting that infection is also possible.  The cardiac silhouette appears
 slightly enlarged.  Median sternotomy wires again noted.

IMPRESSION:
Asymmetric increased interstitial markings potentially due to edema
 superimposed on underlying chronic lung changes versus infection.