Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are unchanged , with the heart size appearing borderline enlarged . The pulmonary vascularity is normal . No focal consolidation , pleural effusion or pneumothorax is seen . Mild degenerative changes are noted within the upper and mid thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .