Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs are obtained . Heart is normal size and cardiomediastinal contours are unchanged . Lungs do not demonstrate significant changes compared to the prior radiograph . Opacification of the left base represents atelectasis or consolidation . Persistent small right pleural effusion with increased small left pleural effusion . No pneumothorax .
    OUTPUT:
    
1 . Persistent small pleural effusions bilaterally . 2 . Left lower lobe atelectasis or consolidation .