Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest were provided . Midline sternotomy wires are again noted . A prosthetic cardiac valve is redemonstrated . As compared with prior exam , there is improvement in pulmonary edema which has near completely resolved . No large effusion or pneumothorax is seen . The heart remains top normal in size . The mediastinal contour is stable . There is hypertrophic change at the right AC joint . Otherwise , the bony structures appear intact .
    OUTPUT:
    
Nearly completely resolved pulmonary edema as compared with prior .