Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval removal of a Swan - Ganz catheter , endotracheal tube , ascending vascular catheters and the enteric tube . EKG leads overlie the chest wall . The lung volumes are low with improving left retrocardiac / left lower lobe opacities . Likely small left pleural effusion with no pneumothorax . Stable cardiomegaly and aortic knob calcification . Bony thorax is unchanged . Upper abdomen is unremarkable .
    OUTPUT:
    
Low lung volumes with improving bibasilar opacities . Persistent small left pleural effusion , no pneumothorax .