Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Evidence of previous CABG . Sternal wires intact . Right - sided IJV CVP in situ with the tip in the distal SVC . Mild pulmonary edema is improved . Atelectatic changes in the right lung mid zone is improved . Left lower lobe atelectasis and pleural effusion is slightly improved . Spondylotic changes of the thoracic spine .
    OUTPUT:
    
Interval improvement as described above .