Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . The lungs are hyperinflated and clear . There is no focal pneumonia , pleural effusion , or pneumothorax . The aortic stent graft and dual - lead pacemaker are in unchanged position compared to prior study .
    OUTPUT:
    
No evidence of pneumonia , pleural effusion , or pneumothorax . Essentially unchanged since the prior study .