Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is stable severe enlargement of the cardiac silhouette . Median sternotomy wires and mediastinal clips are in unchanged position . No focal consolidation , pleural effusion or pneumothorax . Mild pulmonary vascular congestion appears stable .
    OUTPUT:
    
Severe cardiomegaly . Mild pulmonary vascular congestion . No evidence of pneumonia .