Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Midline sternotomy wires again noted with a prosthetic cardiac valve and mediastinal clips . There is moderate pulmonary edema without large effusion . Cardiomediastinal silhouette is stable . Bony structures are intact .
    OUTPUT:
    
Moderate pulmonary edema .