Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A dual - lead pacemaker / ICD device appears unchanged , with leads again terminating in the right atrium and ventricle , respectively . The heart is mildly enlarged . The mediastinal and hilar contours appear unchanged . The chest is hyperinflated . Fissures are perhaps slightly more thickened . There is no pleural effusion or pneumothorax . A mild interstitial abnormality appears increased , overall probably slight congestion .
    OUTPUT:
    
Findings suggestive of mild vascular congestion .