Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size remains moderately enlarged . Mediastinal and hilar contours are relatively unchanged . There is mild upper zone vascular redistribution compatible with mild pulmonary vascular congestion . No focal consolidation , pleural effusion or pneumothorax is seen . Wedge compression fracture at the thoracolumbar junction is unchanged . No pneumothorax or pleural effusion is identified .
    OUTPUT:
    
Mild pulmonary vascular congestion .