Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided pacemaker device with single lead terminating in the right ventricle is in unchanged position . Heart size is mildly enlarged . Coronary artey stent is noted . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is present . There are multilevel mild degenerative changes in the thoracic spine . Clips from prior cholecystectomy are noted in the right upper quadrant .
    OUTPUT:
    
No acute cardiopulmonary process .