Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided AICD / pacemaker device is noted with leads terminating in the right atrium and right ventricle . Marked cardiomegaly is present . Aortic knob calcifications are visualized . There is no overt pulmonary edema . Hilar contours are unremarkable . Minimal atelectasis is seen in the lung bases without focal consolidation . No pleural effusion or pneumothorax is present . Mild degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
Marked cardiomegaly . Otherwise , no acute cardiopulmonary abnormality .