Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is redemonstration of right middle lobe collapse , not significantly changed in appearance compared to the prior study from ___ . There is minimal left lower lung atelectasis / scarring . Heart size is normal . The mediastinal contours are normal . There are no pleural effusions . No pneumothorax is seen .
    OUTPUT:
    
Unchanged right middle lobe collapse .