Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A dual - lead pacemaker / ICD device has leads terminating in the right atrium and ventricle , respectively , which is unchanged . The cardiac , mediastinal and hilar contours are unchanged allowing for differences in technique including mild cardiomegaly . There are no pleural effusions or pneumothorax . An interstitial abnormality appears similar to perhaps mildly increased .
    OUTPUT:
    
Findings suggesting mild vascular congestion , perhaps mildly increased , but otherwise no significant change .