Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A pacemaker generator and leads are in unchanged position and appear intact . The lungs are clear . No confluent opacity is identified . There is no pulmonary edema or pleural effusions . No pneumothorax is identified . Cardiomediastinal and hilar contours are within normal limits . No definite rib fracture is visualized on this chest radiographic examination . There are degenerative changes of the thoracic spine , though no commpression deformity .
    OUTPUT:
    
No acute cardiopulmonary process