Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Leftward shift of mediastinal structures is similar , due to volume loss in the left lung . Left perihilar and suprahilar fibrosis with bronchiectasis and left lower lobe atelectasis appears grossly unchanged , and likely due to prior radiation therapy . Lungs are hyperinflated with emphysematous changes noted in the upper lobes . No new focal consolidation , pleural effusion or pneumothorax is seen . There is no pulmonary vascular engorgement . No acute osseous abnormality is present .
    OUTPUT:
    
Unchanged left suprahilar and perihilar fibrosis with scarring and atelectasis in the left lower lobe , likely due to prior radiation . No new consolidation to suggest pneumonia .