Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Opacity at the left base with obscuration of left hemidiaphragm is likely atelectasis . There is a small left pleural effusion . The right lung is clear . The cardiac silhouette is unremarkable . Displaced fractures of the left fourth through eighth ribs are present .
    OUTPUT:
    
1 . Left basilar opacity is likely atelectasis . 2 . Small left pleural effusion . 3 . Displaced fractures of the left fourth through eighth ribs .