Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded , without focal opacities . There is chronic mild vascular cephalization . Cardiomediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Mild vascular cephalization is unchanged from prior studies . No radiographic evidence of acute cardiopulmonary process .