Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left lung is clear . There is stable elevation of the right hemidiaphragm . Mild atelectasis is noted in the right lung base along with basilar scarring , causing patchy opacity in the right lung base , better assessed on prior CT torso from ___ . The heart size is normal . No pulmonary edema , pleural effusion , or pneumothorax .
    OUTPUT:
    
Atelectasis and scarring is noted at the right lung base , better assessed on prior CTA torso from ___ . Otherwise , no acute cardiopulmonary process .