Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided pacemaker is noted with leads terminating over right atrium and right ventricle , respsectively . Sternotomy wires are midline and intact . Bibasilar opacification likely represents atelectasis ; however , infectious process , although less likely , can not be excluded in the correct clinical setting . Peripheral calcified opacities in both lungs are stable since the prior exam and could represent plaques or calcified nodules . The cardiac mediastinal and hilar contours appear unchanged since the prior examination with heart size remaining top normal in size .
    OUTPUT:
    
No acute cardiopulmonary process .