Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is mildly enlarged . The mediastinal contours again demonstrate an unfolded aorta . The lungs show prominence with indistinctness of pulmonary vasculature as well as hilar fullness . There is no large pleural effusion or pneumothorax .
    OUTPUT:
    
Mildly enlarged cardiac silhouette with pulmonary vascular congestion .