Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . The lungs are unchanged in appearance with linear opacity at the right lung base best seen on lateral view and somewhat improved from prior . The lungs are otherwise clear . Cardiomediastinal silhouette is within normal limits . No acute osseous abnormality identified .
    OUTPUT:
    
No acute cardiopulmonary process .