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  • Pneumomediastinum (gas within soft tissues of the mediastinum) may result from injury to the lungs or structures of the mediastinum such as the airways or oesophagus
  • The mediastinal pleura is separated from the mediastinum and becomes visible as a thin white line
  • This can be a very subtle finding and may be associated with other features of tracking gas such as surgical emphysema or pneumothorax

Page author: Salisbury NHS Foundation Trust UK (Read bio)

Last reviewed: October 2019