Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right IJ central line tip near cavoatrial junction . Improved right lung aeration with improved right basilar atelectasis . Mild retrocardiac opacity , likely atelectasis , consider pneumonia if clinically appropriate . Increased heart size is stable . Improved pulmonary vascularity . Improved perihilar fullness . No pneumothorax .
    OUTPUT:
    
Better right lung aeration compared to prior . Mild retrocardiac opacity , likely atelectasis , consider pneumonia if clinically appropriate .