Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is again a mild interstitial abnormality suggesting very mild pulmonary vascular congestion , although the lungs appear otherwise clear . There is no pleural effusion or pneumothorax . The heart is mildly enlarged . The mediastinal and hilar contours appear unchanged . Mild degenerative changes are noted along the thoracic spine .
    OUTPUT:
    
Findings suggesting slight pulmonary vascular congestion , although improved with resolution of pleural effusions .