Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Post CABG changes are stable . Swan - Ganz catheter is stable in position . Central and chest drains in situ . The ETT has been removed . Mild subglottic edema . Lung volumes remains stable . Bibasal atelectasis unchanged . No pneumothorax . The cardiomediastinal shadow is enlarged , but unchanged . No pulmonary edema . No new areas of airspace consolidation
    OUTPUT:
    
No significant interval change .