Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . The mediastinal and hilar contours appear unchanged . Volume loss and opacification with marked pleural thickening in the left upper hemithorax appear unchanged . Similar but less extensive pleural thickening is also unchanged at the right lung apex . No superimposed opacity is observed . There is no pleural effusion or pneumothorax . Overall , there has been no definite change .
    OUTPUT:
    
Stable appearance of the chest .