Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A dialysis catheter terminates at the cavoatrial junction . The heart is moderately enlarged as before . The mediastinal and hilar contours appear unchanged . Aside from a patchy left basilar opacity suggesting minor atelectasis , the lungs appear clear . There are no pleural effusions or pneumothorax . Bony structures are unremarkable .
    OUTPUT:
    
No evidence of acute disease .