FINDINGS:
Frontal and lateral views of the chest demonstrate confluent left lung base
 opacity obscuring left hemidiaphragm and left cardiac border.  Small bilateral
 pleural effusions.  There is no pulmonary edema.  Hilar and mediastinal
 silhouettes are unchanged.  Aorta remains tortuous with intra-aortic stent
 placement.  Heart size difficult to assess due to adjacent opacities.  There
 is no pneumothorax.  Partially imaged upper abdomen is unremarkable.

IMPRESSION:
Left lung base opacity is new since  exam, and may represent
 atelectasis, effusion or infection in the appropriate clinical setting.