Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild pulmonary edema , not significantly changed from the prior exam . There is no focal airspace opacity , pleural effusion , or pneumothorax . The mediastinal contours are normal . The heart size is moderately enlarged , and unchanged from the prior exam . The patient is status post a CABG . Sternal wires are intact .
    OUTPUT:
    
Mild pulmonary edema , not significantly changed from the prior exam . Results were discussed with Dr . ___ at 9 : 50 a .m . on ___ via telephone by Dr . ___ at the time the findings were discovered .