Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left basilar directed chest tube is in unchanged position , with extensive subcutaneous air and pneumomediastinum unchanged . Multiple displaced left rib proximal left clavicle fractures are unchanged . No pneumothorax is seen . The lungs are otherwise clear with normal cardiomediastinal contours .
    OUTPUT:
    
Unchanged pneumomediastinum and subcutaneous emphysema without pneumothorax . Please note this pattern of development of pneumomediastinum is atypical and clinical correlation is recommended to exclude potential etiologies of esophageal injury such as traumatic nasogastric tube placement or lung trauma due to chest tube placement . Findings discussed by phone with ___ , NP , by Dr . ___ by phone at ___ on ___ .