Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The previously seen multifocal bibasilar airspace opacities have almost completely resolved with only slight scarring seen at the bases . There are new ill - defined bilateral linear opacities seen in the upper lobes , which given their slight retractile behavior are likely related to radiation fibrosis . There is no focal consolidation , pleural effusion , pneumothorax , or pulmonary edema . Median sternotomy wires and mediastinal clips are noted .
    OUTPUT:
    
1 . Interval resolution of multifocal airspace opacities . 2 . New bilateral linear apical opacities , likely related to radiation treatment .