Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bilateral rib fractures appear unchanged , which are healed . A tiny left apical pneumothorax is again visualized . Otherwise , the lungs are clear . No pleural effusions are present . The cardiac silhouette , hilar , and mediastinal contours appear normal . A left coracoid fixation screw is in place .
    OUTPUT:
    
1 . Redemonstration of tiny left apical pneumothorax . 2 . Bilateral rib fractures at various stages of healing with more acute - appearing rib fractures in the left lower posterior ribs .