Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperexpanded without focal consolidation . Surgical sutures overlie the left perihilar region , unchanged . Mediastinal contours and heart borders are normal . Left superior tracheal deviation is consistent with left upper lobe volume loss due to prior VATS . No pleural effusion or pneumothorax .
    OUTPUT:
    
Normal postoperative appearance .