Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal contours are stable in appearance , with post-radiation changes noted in the right paramediastinal and hilar regions resulting in geographically marginated opacity in this region . No focal areas of consolidation are identified in either lung . There are no pleural effusions .
    OUTPUT:
    
Post - treatment changes in the right hemithorax . No evidence of pneumothorax .