Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior study the pseudotumor ( fluid in the major fissure ) on the right has resolved . Post treatment changes including elevation of the right hilus and coarse interstitial changes indicative of radiation fibrosis are again noted , a chronic finding . Obscuration of the right hemidiaphragm is likely a function of atelectasis and a small pleural effusion . The left lung is largely clear . Heart size and mediastinal contours are stable . Heavily calcified aortic arch is again noted .
    OUTPUT:
    
1 . Resolution of fluid in the right major fissure . 2 . Small right pleural effusion and right basilar atelectasis . 3 . Chronic treatment - related changes in the right lung .