Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left chest tube is in unchanged position . There is no appreciable pneumothorax . Lung volumes are low . There is increased atelectasis of bilateral lower lobes . Focal lucency at the left lateral lung base is unchanged in consistent with focally severe emphysema seen on prior CT from ___ . Mildly enlarged Cardiac silhouette is exaggerated by low lung volumes . Small amount of subcutaneous emphysema is noted near the chest tube . Pulmonary edema is mild .
    OUTPUT:
    
Mild pulmonary edema . Increased bibasilar atelectasis . No appreciable pneumothorax .