Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is severely enlarged , similar to possibly mildly increased as compared to the prior study . Findings could be due to underlying cardiomyopathy however , pericardial effusion is not excluded . There is slight blunting of the left costophrenic angle and there may be a small pleural effusion . Trace effusion is difficult to exclude on the right . Again , there is bilateral hilar prominence and vascular cephalization suggesting mild vascular congestion . Mediastinal contours are unremarkable . No pneumothorax is seen .
    OUTPUT:
    
1 . Severe enlargement of the cardiac silhouette is again seen , possibly mildly increased , may be due to underlying cardiomyopathy however underlying pericardial effusion not excluded . 2 . Small bilateral pleural effusions . Mild pulmonary vascular congestion .