Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . There is a mildly prominent appearance of the bilateral pulmonary hilar vasculature . No frank edema . No signs of pneumonia , effusion or pneumothorax . The heart size is normal . Mediastinal contour is normal . Bony structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Possible mild central hilar congestion .