Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided dual - lumen pacemaker device is noted with leads terminating in the right atrium and right ventricle . The patient is status post median sternotomy and CABG . The heart size is normal . The aortic knob is calcified . The mediastinal and hilar contours are within normal limits . The pulmonary vascularity is normal . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is present . There are multilevel degenerative changes within the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .