Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size remains mildly enlarged . The mediastinal and hilar contours are unchanged with tortuosity of the thoracic aorta again demonstrated . Mild pulmonary vascular congestion is present , but slightly improved when compared to the prior study . There is no pleural effusion or pneumothorax . No focal consolidation demonstrated . There are no acute osseous abnormalities .
    OUTPUT:
    
Mild pulmonary vascular congestion , slightly improved from the prior study .