Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The pacing unit projects over the left chest with leads in the right atrium and right ventricle . The heart size is within normal limits . The mediastinal contours demonstrate a mildly tortuous aorta with calcified atherosclerotic disease at the aortic knob and descending aorta . Lungs are clear of consolidation . There is no pleural effusion or pneumothorax . Mild degenerative changes are present in the right glenohumeral joint .
    OUTPUT:
    
No acute cardiopulmonary abnormality .