Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Persistent atelectasis and post radiation changes in the right upper lobe with two fiducial markers in place . There is no focal consolidation , effusion or pneumothorax . Left lung is clear . Heart size is normal .
    OUTPUT:
    
Persistent atelectasis and postradiation changes in the right upper lobe . No pneumothorax .