Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior study , marked cardiomegaly , pulmonary vascular congestion , and edema have improved , but are persistent . Lungs demonstrate improved aeration . No new focal consolidation or pleural effusions . No pneumothorax identified .
    OUTPUT:
    
Interval improvement , but persistence of , marked cardiomegaly , pulmonary vascular congestion , and pulmonary edema . No new focal consolidation .