Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . Borderline cardiomegaly is stable . Previously seen mild pulmonary vascular congestion and pulmonary edema has decreased . No evidence of pneumonia . No pleural effusion or pneumothorax . Normal mediastinal and hilar contours . Sternotomy wires are in appropriate positions . Aortic valve replacement and tricuspid valvuloplasty are in appropriate position .
    OUTPUT:
    
Decreased pulmonary vascular congestion and pulmonary edema compared to most recent study .