Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate - to - severe chronic cardiomegaly is unchanged . The lung volumes are extremely low resulting in crowding of the bronchovascular markings . Mild pulmonary vascular congestion is present , with improvement in the previously seen pulmonary edema . No consolidation , pleural effusion or pneumothorax is seen in this study .
    OUTPUT:
    
Pulmonary vascular congestion , with improved edema .