Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are fully expanded and clear . No pleural abnormalities . Heart size is normal . The bilateral pulmonary arteries and azygos vein are prominent . Cardiomediastinal and hilar silhouettes otherwise appear normal .
    OUTPUT:
    
1 . Apparent prominence of the bilateral pulmonary arteries and azygos vein raises the possibility of pulmonary hypertension or central lymphadenopathy . Recommend dedicated chest CT with IV contrast . 2 . No acute cardiopulmonary abnormality .