Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is borderline enlarged . There is central pulmonary vascular congestion without overt edema . Lungs are clear except for none change region of linear scar at the left base . No large pleural effusion or pneumothorax is present .
    OUTPUT:
    
Mild pulmonary vascular congestion without evidence of pulmonary edema .