Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lungs are clear . Moderate enlargement of the cardiac silhouette is new since prior study from ___ , and may be due to cardiomegaly and / or pericardial effusion . Pulmonary vasculature is normal . Distension of the mediastinal veins is likely due to mild volume overload . There are no pleural effusions .
    OUTPUT:
    
New moderate cardiomegaly and / or pericardial effusion . Probable volume overload