Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . A coronary artery stent is noted . Mediastinal and hilar contours are within normal limits . Lungs are clear . Pulmonary vasculature is normal . No focal consolidation , pleural effusion or pneumothorax is present . Mild degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .