Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate stable mild cardiomegaly . There is minimal unfolding of the thoracic aorta . Mediastinal and hilar contours are normal . There may be mild central vascular congestion without frank edema . There is no pleural effusion , vascular congestion , or pneumothorax .
    OUTPUT:
    
Mild vascular congestion without edema .