Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were obtained . The lungs are overexpanded . Hyperlucency in the lung apices is compatible with emphysema . Since ___ , linear opacities at both lung bases have become more prominent . There is no focal consolidation , effusion , or pneumothorax . Cardiac and mediastinal contours are normal .
    OUTPUT:
    
1 . Emphysema 2 . Linear bibasilar opacities are new since ___ . These likely reflect progressive scarring and compressive atelectasis .