Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and CABG . Heart size is normal . The mediastinal contours are unchanged . Right hemidiaphragm remains elevated with associated right basilar atelectasis . Pulmonary vasculature is not engorged . Left lung is grossly clear . No pleural effusion or pneumothorax is demonstrated . There are no acute osseous abnormalities . Mild to moderate multilevel degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
Unchanged chronic elevation of the right hemidiaphragm with right basilar atelectasis . No new focal consolidation .