Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded . In the lateral view , there is a linear opacity tracking parallel to the right hemidiaphragm , compatible with scarring or atelectasis . No other focal opacities are noted in the frontal or lateral view . Cardiomediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .