Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mid left upper and mid-zone linear atelectasis has improved since the ___ examination . There is persistent moderate atelectasis and effusion at the right lung base . The tracheostomy tube , abdominal drain , and bilateral IJ catheters are unchanged in position . There is no pneumothorax .
    OUTPUT:
    
1 . Improved left upper lobe atelectasis . 2 . Unchanged right pleural effusion and moderate right basilar atelectasis .