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 mediastinal and hilar contours appear unchanged . The lungs appear clear . There are no pleural effusions or pneumothorax . Bony structures are unremarkable . There has been no significant change .
    OUTPUT:
    
No evidence of acute disease .