Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is borderline enlarged , unchanged . Mediastinal and hilar contours are similar . Pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is present . Mild degenerative changes are noted in the thoracic spine . Several clips are noted within the upper abdomen .
    OUTPUT:
    
No acute cardiopulmonary abnormality .