Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left - sided dual - lead pacemaker is seen with the wires terminating in the expected location of the right atrium and right ventricle . There is mild cardiomegaly . The lungs are clear without focal consolidation , effusion or pneumothorax . There is atherosclerotic calcification of the descending aorta .
    OUTPUT:
    
1 . Mild cardiomegaly .