Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperexpanded . Mild right apex linear scaring and / or atelectasis . The lungs are otherwise clear . No focal consolidation , edema , effusion , or pneumothorax . Mild bronchial wall thickening could reflect chronic bronchitis or acute bronchial inflammation or infection . The heart is normal in size . The mediastinum is not widened . No acute osseous abnormality . Multi - level mild degenerative changes of thoracic spine are noted .
    OUTPUT:
    
No evidence of focal pneumonia . Mild bronchial wall thickening could reflect chronic bronchitis or acute bronchial inflammation or infection .