Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs redemonstrate lateral right rib fractures and subcutaneous and mediastinal emphysema , which is similar in appearance to prior radiograph . The right apical pneumothorax is decreased . Right base atelectasis is unchanged . Heart size remains normal .
    OUTPUT:
    
1 . Persistent but decreased small right apical pneumothorax . 2 . Unchanged subcutaneous and mediastinal emphysema and right base atelectasis .