Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild enlargement of the cardiac silhouette is unchanged from ___ . Stable postoperative appearance of the mediastinum . Hilar contours are normal . There has been interval increase in the left pleural effusion which is now moderate to large in size with associated adjacent compressive atelectasis . The right lung is clear . There is no pneumothorax .
    OUTPUT:
    
Interval enlargement of a left - sided pleural effusion which is now moderate to large in size with adjacent atelectasis .