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 . A linear right infrahilar opacity suggests minor atelectasis or scarring . Otherwise , the lungs appear clear . Bony structures are unremarkable .
    OUTPUT:
    
Similar band - like opacity suggesting minor atelectasis or scarring in the right lower lung with no definite acute disease .