Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is moderately and severely enlarged but stable . The aorta is tortuous and calcified . There is mild pulmonary vascular congestion , minimally improved compared to the prior study . No focal consolidation , pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Mild pulmonary vascular congestion , slightly improved compared to the prior study .