Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Linearly oriented opacity within the right upper lobe is probably an area of localized scar or atelectasis . The lungs are otherwise clear except for pleural and parenchymal scarring in the periphery of the left apex . The cardiomediastinal contours are stable in appearance . There are no pleural effusions or pneumothoraces . A right internal jugular central venous catheter continues to terminate in the lower superior vena cava .
    OUTPUT:
    
Linearly oriented right upper lobe opacity favors a focal area of scarring or atelectasis .