Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to prior chest x-ray of ___ , lung is well inflated , with mild flattening of the hemidiaphragms and hyperlucency of the upper lobes consistent with emphysema . There are no consolidations or nodules . The cardiac silhouette is mildly larger since ___ , but still normal . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
There is no acute cardiopulmonary process .