Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval improvement in interstitial edema . Low lung volumes and technique accentuate heart size and mediastinum . Deviation of the trachea to the right is due to tortuosity of the great vessels as seen on CT . No effusion or pneumothorax .
    OUTPUT:
    
Interval improvement in findings suggestive of pulmonary edema .