Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low accentuating the cardiac silhouette and pulmonary vasculature . Heart size is mildly enlarged . Central pulmonary vascular congestion is present with trace interstitial pulmonary edema . Lungs are clear . Pleural surfaces are clear without effusion or pneumothorax . No displaced rib fracture is seen .
    OUTPUT:
    
Mild cardiomegaly with vascular congestion and trace interstitial edema . No obvious fracture .