Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear within normal limits . There is no pleural effusion or pneumothorax . No evidence for an interstitial abnormality is seen . The lungs appear clear . Bony structures are unremarkable aside from incompletely characterized lower cervical fusion .
    OUTPUT:
    
No radiographic evidence for acute or chronic lung disease .