Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded . No definite pneumonia on this single view . The left lung is clear . No large pleural effusion . No pneumothorax . Cardiomediastinal silhouette is overall unchanged and within normal limits . Aortic knob calcifications are unchanged . Left - sided cardiac device is unchanged .
    OUTPUT:
    
No definite pneumonia on this single view . If concern is high , lateral view could be performed .