Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are normal . Pulmonary vasculature is normal and the lungs are clear . There is mild scarring within the lung apices . No focal consolidation , pleural effusion or pneumothorax is demonstrated . There are mild multilevel degenerative changes in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .