Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is persistent scarring at the left upper lung in the periphery as well as the left perihilar region , related to post radiation effects . No focal consolidation is identified . The cardiomediastinal silhouette is within normal limits . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Post radiation fibrosis again visualized in the left lung and left perihilar region . No focal consolidation .