Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged with a left ventricular configuration as before . The aorta is calcified and markedly tortuous , as seen previously . However , the mediastinal and hilar contours appear unchanged . The lungs appear clear . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of acute disease .