Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Increased left - sided airspace opacity likely represents a combination of increasing left pleural effusion and compressive atelectasis or collapse . Pneumonia is possible in the proper clinical setting . Mild volume overload is unchanged . The tracheostomy tube ends 6 .8 cm from the carina . The right lung is clear . There is no pneumothorax .
    OUTPUT:
    
1 . Increased left - sided opacity is likely a combination of increasing left pleural effusion and compressive atelectasis . 2 . Unchanged mild volume overload .