Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . Bilateral hilar fullness may be due to vessels or lymphadenopathy . The lungs are otherwise clear without pleural effusion , focal consolidation , or pneumothorax .
    OUTPUT:
    
Bilateral hilar fullness , may be due to vessels or lymphadenopathy . However , further workup with anterior shallow oblique radiographs is recommended .