Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Heart size remains mildly enlarged . Mediastinal and hilar contours are unchanged . Atherosclerotic calcifications are seen within the aortic arch . There is no pulmonary edema . Blunting of the costophrenic angles posteriorly suggests small bilateral pleural effusions , not changed in the interval . No focal consolidation or pneumothorax is present . There are multilevel degenerative changes seen in the thoracic spine .
    OUTPUT:
    
Small bilateral pleural effusions .