Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a moderate - sized left pleural effusion which has increased in size since the prior exam . There is associated compressive left basilar atelectasis . There is minimal right basilar atelectasis . The right lung is otherwise clear . There is no right pleural effusion . There is no pneumothorax . The aorta is tortuous and calcified , similar to the prior exam . The cardiomediastinal silhouette is otherwise unchanged . Sternal wires are intact .
    OUTPUT:
    
Interval increase in size of the left pleural effusion , which is now moderate .