Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Little change in comparison to prior study with displaced fractures of the right posterior fifth and sixth ribs with a stable small - to - moderate right apical pneumothorax . Bibasilar opacities persist . Cardiomediastinal silhouette is normal .
    OUTPUT:
    
1 . Little change in comparison to prior study with minimally displaced fractures of the posterior right fifth and sixth ribs and associated stable small - to - moderate right apical pneumothorax . 2 . Bibasilar opacities persist and are most likely representative of atelectasis .