Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright chest radiograph ___ at 10 :45 is submitted .
    OUTPUT:
    
The heart remains markedly enlarged status post median sternotomy with valve replacement . The pulmonary edema has resolved . There is likely a small residual layering right effusion . No focal airspace consolidation is seen to suggest pneumonia . No pneumothorax .