Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left - sided PICC line now terminates in the left brachiocephalic vein . The bilateral diffuse airspace opacities have increased slightly in extent with more confluent opacity seen in the left mid and right mid lung . Assessment of the heart size is not possible as the left heart border is silhouetted . No pleural effusion seen . No pneumothorax seen .
    OUTPUT:
    
Slight interval progression of the bilateral airspace opacities . The left - sided PICC terminates in the left brachiocephalic vein .