Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size remains moderately enlarged with continued aortic tortuosity and calcified atherosclerotic disease at the aortic arch . Volume loss in the left lung is again noted secondary to prior left lower lobectomy . Fiducial markers are again seen in the periphery of the left upper lobe with surrounding opacity compatible with prior CyberKnife radiosurgery treatment , the findings of which appear unchanged compared to the prior radiographic study . Emphysematous changes are again noted in both lungs , with a patchy opacity seen within the right lung base . This could represent an area of atelectasis though developing infection can not be completely excluded . No overt pulmonary edema is seen , nor is there a large pleural effusion . Pleural thickening about the left hemithorax is unchanged , and there is no pneumothorax . Old left - sided rib fractures are present . There is no free intraperitoneal air seen below the diaphragms .
    OUTPUT:
    
Post-operative changes and post-treatment changes in the left hemithorax which are similar compared to the prior study . Patchy opacity in the right lung base may reflect an area of developing infection or atelectasis .