Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right upper lobe radiation changes are grossly stable given differences in modality from the prior study . The volume loss in the right upper lobe causes shifting of the mediastinum to the right . Otherwise , the mediastinum as well as the cardiac size are stable . The right hilar adenopathy was better seen on the prior PET . Blunting of the lateral right costophrenic angle is likely from pleural thickening . The left lung is clear . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Right upper lobe post-radiation changes without convincing evidence of pneumonia .