Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and mitral valve replacement . Heart remains moderately enlarged with left atrial enlargement . There is mild pulmonary edema . Mediastinal and hilar contours are unchanged . No focal consolidation , pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Mild pulmonary edema .