Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: 2 views of the chest demonstrate mild scarring at the right lung base . Otherwise the lungs are clear and the hilar and mediastinal contours are normal . No pleural abnormality is seen . As compared to the prior radiograph , there has been interval improvement in the right basilar opacity .
    OUTPUT:
    
No acute cardiopulmonary process .