Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . The aorta is mildly tortuous and calcified . There is blunting of the right costophrenic sulcus but similar to prior studies , suggesting scarring . To a lesser degree , there is also blunting of the left costophrenic sulcus that appears unchanged . Hemidiaphragms are flattened suggesting mild hyperinflation . There is no definite pleural effusion or pneumothorax .
    OUTPUT:
    
Stable appearance of the chest , without evidence for acute disease .