Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are hyperinflated suggestive of COPD in the appropriate clinical setting . There is no consolidation , pleural effusion , or pneumothorax . Cardiomediastinal and hilar silhouettes are normal size . Multifocal linear opacities in the left mid and both lower lungs may reflect linear scarring or atelectasis .
    OUTPUT:
    
Subsegmental atelectasis versus linear scar with otherwise clear lungs . Possible COPD . .