Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left base opacity compatible with a layering pleural effusion as well as left lower lobe atelectasis . There is likely also a trace right pleural effusion as well . There is increased opacity projecting over the right infrahilar region which is not felt to be entirely due to hilar vasculature . Lungs are otherwise clear . Cardiac silhouette is top - normal in size for projection . No acute osseous abnormalities . No free intraperitoneal air .
    OUTPUT:
    
Small left pleural effusion with left lower lobe atelectasis . Increased opacity projecting over the inferior right hilum , not definitively normal hilar structures . Consider nonurgent chest CT for further characterization of these findings .