Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with prior chest radiograph there is mildly increased prominence of the vascular markings in the upper lobes . Otherwise no focal opacities are identified . Cardiomediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Pulmonary vascular congestion . No evidence of pneumonia .