Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . There is moderate - to - marked enlargement of the cardiac silhouette . The aortic knob is calcified . There is moderate pulmonary vascular congestion . No large pleural effusion is seen although trace pleural effusions would be difficult to exclude . No focal consolidation is seen . There is no pneumothorax . There is minimal lingular atelectasis / scarring .
    OUTPUT:
    
Enlarged cardiac silhouette with mild pulmonary edema . Trace pleural effusion is difficult to exclude . No large pleural effusion seen .