Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . The aortic arch is again calcified with similar unfolding . The cardiac , mediastinal and hilar contours appear unchanged . There is again a small eventration of the right hemidiaphragm . Streaky left basilar opacity suggests minimal atelectasis . The lungs appear otherwise clear . There is no definite pleural effusion , although small pleural effusions would be difficult to exclude . There is no pneumothorax .
    OUTPUT:
    
No evidence of acute disease .