Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is again a dual lead pacemaker / ICD device in place with leads terminating in the right atrium and ventricle , respectively . Small subpulmonic effusions are present bilaterally . Patchy retrocardiac opacity in the left lower lobe has increased but probably this can be attributed to atelectasis . The heart is enlarged . The cardiac , mediastinal and hilar contours appear stable .
    OUTPUT:
    
Status post placement of two - lead pacemaker / ICD device . Patchy left base opacity , probably minor atelectasis .