Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Emphysema , worse in the left lung , is similar to priors . Lung volumes are low . Cardiac size is normal . There is no focal consolidation . There is no pneumothorax or pleural effusion . Aortic knob calcifications are again seen .
    OUTPUT:
    
1 . No acute cardiopulmonary abnormality . 2 . Emphysema .