Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Streaky opacities in the left lower lobe are likely atelectasis . The lungs are otherwise clear . The heart size is normal . The mediastinal contours are normal . Blunting of the posterior costophrenic angle indicates a tiny pleural effusion . No pneumothorax is seen .
    OUTPUT:
    
1 . Subsegmental left lower lobe atelectasis . 2 . Tiny pleural effusion on either the right or left side .