Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Semi-upright AP view of the chest . The lung volumes are low . No focal opacity concerning for pneumonia is seen . Left pleural thickening is unchanged since ___ . No pneumothorax is identified . The right hilum is prominent , but unchanged since ___ . Moderate cardiomegaly is also stable .
    OUTPUT:
    
No opacities concerning for pneumonia . Chronic cardiomegaly and left pleural thickening is unchanged since ___ .