Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate unchanged linear areas of scarring in the left mid lung with adjacent pleural thickening . The lungs are otherwise well expanded and clear . Mild cardiomegaly is unchanged . Hilar contours are normal . There is no pneumothorax or pleural effusion . There are degenerative changes about the right acromioclavicular joint .
    OUTPUT:
    
Stable scarring in the left midlung . No pleural effusion .