Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . Coronary artery stents are noted . Mediastinal and hilar contours are within normal limits . Pulmonary vasculature is normal . Lungs are clear without focal consolidation . Mild scarring is noted in the lung apices . No pleural effusion or pneumothorax is present . Moderate degenerative changes are seen in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .