Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior chest radiograph , the lungs remain hyperinflated with flattening of the bilateral hemidiaphragms and increased AP diameter , consistent with mild emphysema . Left base atelectasis / scarring is unchanged . No focal consolidation , pleural effusion , or pneumothorax . Cardiomediastinal and hilar silhouettes are unchanged .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Chronic changes , as described above . No significant change since the prior radiographs from ___ .