Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - expanded and clear . No focal consolidation , edema , effusion , or pneumothorax . The heart is normal in size . The mediastinum is not widened . Minimal , linear opacities in the basal aspect of the right upper lobe are unchanged , reflecting scarring .
    OUTPUT:
    
No acute cardiopulmonary process .