Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild left atrial enlargement is re - demonstrated . The mediastinal and hilar contours are normal . Pulmonary vasculature is normal . Linear opacity within the right upper lung field is unchanged , and likely reflective of scarring . The lungs are otherwise clear . No focal consolidation , pleural effusion or pneumothorax is seen . No acute osseous abnormalities present .
    OUTPUT:
    
No acute cardiopulmonary abnormality .