Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . There is redemonstration of radiation fibrotic changes within the left upper paramediastinal region as seen on prior chest examinations . There is again a leftward shift of mediastinal structures with volume loss in the left lung . No focal consolidation , pleural effusion or pneumothorax is identified .
    OUTPUT:
    
No acute cardiopulmonary process . Radiation changes in the left upper paramediastinal region .