Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A dialysis catheter has been removed . The heart is again mild - to - moderately enlarged . The mediastinal and hilar contours appear unchanged . There is mild perihilar congestion , but less than on the prior examination . There is no pleural effusion or pneumothorax . Mild - to - moderate degenerative changes are noted along the thoracic spine .
    OUTPUT:
    
Findings suggesting mild vascular congestion , although less than on the prior exam .