Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild enlargement of the cardiac silhouette is demonstrated . The mediastinal contour is unchanged . There is mild pulmonary vascular congestion . Previously noted focal opacity within the left upper lobe has resolved . There is minimal left lower lobe atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . No acute osseous abnormality is detected .
    OUTPUT:
    
Mild pulmonary vascular congestion .