Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate to severe cardiomegaly is unchanged . The aortic knob is calcified . Mediastinal and hilar contours are stable . There is mild pulmonary vascular congestion , similar compared to the prior study . No focal consolidation , pleural effusion or pneumothorax is visualized . No acute osseous abnormalities seen .
    OUTPUT:
    
Mild pulmonary vascular congestion .