Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy multiple valve repair and CABG . The postoperative cardiomediastinal silhouette is seen and stable when compared to ___ study . There are low lung volumes . Mild to moderate pulmonary edema is unchanged when compared ___ . Moderate left layering pleural effusion has increased with increased associated atelectasis . Patient has had removal of left chest tube . No pneumothorax is seen . ETT and enteric tube are unchanged in position . Right jugular approach Swan - Ganz catheter is stable , terminating in the right main pulmonary artery .
    OUTPUT:
    
1 . Interval removal of left chest tube without pneumothorax . 2 . Stable mild - to - moderate pulmonary edema . Increased left layering pleural effusion and associated atelectasis . 3 . Stable positioning of support devices .