Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Fibrosis from radiation treatment are seen in the left lower lung , increased since prior chest radiograph from ___ . The known left pulmonary nodules are not well seen on this exam , and better assessed on recent CT Chest . The right lung is clear . The heart size is normal . No pneumothorax or pulmonary edema .
    OUTPUT:
    
1 . Fibrosis in the left lower lung , compatible with history of radiation treatment . The known left pulmonary nodules are not well seen on this exam , and are better assessed on recent CT chest .