Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Elevation of left hemidiaphragm is chronic , and there is associated left basilar atelectasis . The cardiac , mediastinal and hilar contours appear relatively unchanged , without evidence of pulmonary vascular congestion . Focal areas of calcification projecting over left mid lung field are compatible with calcified pleural plaques and are unchanged . Streaky linear opacity in the right lung base also likely reflects atelectasis . There is no pneumothorax or large pleural effusion . Multilevel degenerative changes in the thoracic spine are re-demonstrated , and mild degenerative changes also noted in both glenohumeral joints .
    OUTPUT:
    
Chronic elevation of left hemidiaphragm with associated left basilar atelectasis . Streaky opacity in the right lung base is also likely atelectasis . No definite evidence for congestive heart failure .