Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear within normal limits . There is a small pleural effusion on the right , although none is found on the left . In addition there is a somewhat rounded subpleural opacity seen on the lateral view posteriorly in the posterior right costophrenic sulcus . Bony structures are unremarkable .
    OUTPUT:
    
Small suspected right pleural effusion versus scarring , but including a small rounded posterior density , atelectasis versus infection . Follow - up radiographs are recommended to show resolution and exclude a developing mass , although less likely . Recommendation discussed with Dr . ___ on ___ .