Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: When compared to prior , there has been no significant interval change . There is mild pulmonary vascular congestion . Possible trace effusions are identified . Degree of cardiomegaly is unchanged . Median sternotomy wires and mediastinal clips again noted .
    OUTPUT:
    
Mild pulmonary vascular congestion and trace effusions .