Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac size is normal . The aorta is tortuous . The hilar and mediastinal contours are otherwise normal . There are nodular opacities at the lung apices , which may likely represent scarring . Lungs are otherwise clear . There is no pleural effusion or pneumothorax . No acute osseous abnormality is identified .
    OUTPUT:
    
No acute cardiopulmonary abnormality .