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What is Subcutaneous emphysema may be found in the following conditions: and explain in detail?
* Posterior tracheal wall laceration is responsible for emphysema after Percutaneous Tracheostomy. After perforation of the posterior trachea wall, the pleural space can be reached easily. This may result in a pneumothorax. * Trauma to chest including after a vigorous Hemilich maneuver can lead to subcutaneous emphysema.