Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded . There is unchanged small right pneumothorax . Bilateral chest tubes are in place . Bibasilar atelectasis has improved from prior exam . ET tube and right PICC line appear to be in unchanged locationz , though the PICC line is partly obscured by overlying mediastinal interfaces . There are no pleural effusions . Cardiomediastinal silhouette is unchanged .
    OUTPUT:
    
Persistent small right pneumothorax . Improving bibasilar atelectasis .