Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is borderline enlarged but unchanged . The aorta remains tortuous with mild calcification of the aortic knob again noted . The lungs are clear and the pulmonary vascularity is normal . No pleural effusion or pneumothorax is identified . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary abnormality .