Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The aortic knob is calcified . The mediastinal and hilar contours are normal . Scarring within the lung apices is present . Remainder of the lungs are clear . No focal consolidation , pleural effusion or pneumothorax is present . The pulmonary vascularity is normal .
    OUTPUT:
    
No acute cardiopulmonary abnormality .