Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a dual - lead pacemaker / ICD device whose leads terminate in the right atrium and ventricle , respectively , as before . The heart is at the upper limits of normal size . There is moderate unfolding and calcification along the thoracic aorta . There is no pleural effusion or pneumothorax . Aside from patchy posterior basilar opacity , probably due to atelectasis , the lungs appear clear . Bony structures are unremarkable .
    OUTPUT:
    
No evidence of acute disease .