Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs were obtained . Extensive subcutaneous emphysema is again present within the chest wall and neck . A left chest tube remains in place . A small left medial pneumothorax persists , without evidence of tension . There is also a possible small right apical pneumothorax . The cardiomediastinal silhouette and hilar contours are stable . There is a persistent increased opacity at the left lower lobe . Multiple left sided rib fractures are again visualized .
    OUTPUT:
    
1 . Persistent small medial left pneumothorax . 2 . Possible left lower lobe pneumonia and less likely pulmonary hemorrhage . 3 . Extensive subcutaneous emphysema in the chest and neck with multiple left - sided rib fractures .