Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right hilum is rounded and bulbous , worrisome for a possible mass or enlarged lymph nodes . The mediastinal contours are unremarkable . The heart is normal in size . The lungs appear clear . There are no pleural effusions or pneumothorax . Medial deviation of the right sixth rib may be post-traumatic but not suggestive of recent trauma .
    OUTPUT:
    
Findings concerning for a right hilar mass or lymphadenopathywhich should be investigated with a chest CT , preferably with intravenous contrast if possible .