Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior study there has been no significant interval change . Left upper lobe postradiation changes are similar to prior exam . No new consolidation or mass is identified . Mediastinal and hilar contours are stable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary process .