Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post aortic valve replacement . The heart is moderately enlarged . There is no pleural effusion or pneumothorax . There is a patchy opacity in the left lower lobe in the retrocardiac region that is similar to decreased and may correspond to atelectasis associated with a tortuous aorta .
    OUTPUT:
    
No evidence of acute disease .