Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low accentuating the cardiac silhouette and pulmonary vasculature . Again there is mild unfolding of the thoracic aorta with atherosclerotic calcifications noted in the aortic knob . Hilar contours are unremarkable . Surgical clip is again associated with unchanged left upper lobe opacity which is partially obscured by overlying cardiac lead on the current exam . There is trace bibasilar atelectasis . Lungs are otherwise clear . There is no fluid overload . Pleural surfaces are clear without effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary abnormality