Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal contour is within normal limits . Increased density of the left hilum is consistent with known left hilar mass , better assessed on prior chest CTA examination . Lungs are otherwise well expanded and clear . There is no focal consolidation , pleural effusion or pneumothorax .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Known left hilar mass is better assessed on prior chest CTA examination .