Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been increase in diffuse interstitial / air airspace opacities , right greater than left , with a perihilar predominance , suggesting central venous congestion . Heart size is now mildly enlarged . No significant pleural effusions or pneumothorax .
    OUTPUT:
    
Diffuse interstitial and airspace opacities , most compatible with pulmonary edema . However , superimposed infection can not be excluded . Follow - up after diuresis .