Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As before , there is a dual - lead pacemaker / ICD device whose leads terminating in the right atrium and ventricle , respectively . The right ventricular lead extends somewhat further into the ventricle than before . The cardiac , mediastinal and hilar contours appear unchanged . The lungs appear hyperinflated . There is patchy new left basilar opacification , suggesting atelectasis with a possible accompanying small pleural effusion . There is no pneumothorax . The bones appear demineralized . Degenerative changes are similar at each shoulder with periarticular calcifications that may represent hydroxyapatite deposition .
    OUTPUT:
    
1 . Status post pacemaker placement with ventricular lead extends somewhat further into the right ventricle than before , but otherwise positioning appears unchanged . 2 . Patchy new left basilar opacification , suggestive of atelectasis , possibly with a small coinciding pleural effusion .