Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . The lungs are clear of confluent consolidation or effusion . There is mild central pulmonary vascular engorgement noting enlargement of the azygous vein . Cardiac silhouette is enlarged but not significantly changed . Median sternotomy wires and mediastinal clips again noted . No acute osseous abnormality detected .
    OUTPUT:
    
Mild pulmonary vascular congestion without pulmonary edema or effusion .