Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is mildly enlarged but stable . The aorta remains tortuous . Previous pattern of pulmonary vascular congestion appears improved in the interval . Minimal atelectasis in the lung bases is present . No focal consolidation , pleural effusion or pneumothorax is visualized .
    OUTPUT:
    
Interval improvement in previous pattern of pulmonary vascular congestion . Mild bibasilar atelectasis .