FINDINGS:
AP portable upright view of the chest.   Left chest wall pacer device is again
 seen with leads extending to the region the right atrium and right ventricle
 as on prior.  Midline sternotomy wires are again noted.  There is subtle lower
 lung opacity noted bilaterally which could represent mild atelectasis though
 early pneumonia or aspiration is difficult to exclude in the correct clinical
 setting.  Mild hilar congestion is suspected.  There is no frank pulmonary
 edema.  No large effusions are seen.  No pneumothorax.  Cardiomediastinal
 silhouette is unchanged.  Bony structures appear intact.

IMPRESSION:
Subtle lower lung opacities likely atelectasis versus early pneumonia in the
 correct clinical setting.  Mild hilar congestion.