Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a dual - lead pacemaker / ICD device with leads terminating in the right atrium and ventricle , respectively . The heart is mildly enlarged . Patchy calcification is noted along the aortic arch . There is no definite pleural effusion or pneumothorax , although there is persistent blunting of the right costophrenic angle , which may suggest a small persistent loculated pleural effusion versus scarring . Slight thickening of the minor fissure is unchanged . The lungs appear clear . Bony structures are unremarkable .
    OUTPUT:
    
No evidence of acute disease .