Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Esophageal stent and right PICC remain in place , unchanged in position . The mediastinal contours appear stable . Bibasilar areas of atelectasis have slightly improved , but a small right pleural effusion is unchanged , and small left pleural effusion may be minimally increased .
    OUTPUT:
    
Improving bibasilar atelectasis . Small bilateral pleural effusions .