Injuries after a close contact gunshot with clear or tear gas cartridges can lead to severe and life threatening complications. The high pressure of the gas may damage soft tissue, bones and organs. This mechanism is able to cause mediastinal emphysema, rupture of upper and lower pharyngeal, esophageal and tracheal structures far away from the initial trauma with diagnostic findings which are may be difficult to interpret. This case report presents a mediastinal emphysema in a 17 year old man following a temporal shot with a gas revolver. The diagnostics, focussed on CT and X-ray imaging, and the therapeutic concept of such cases will be discussed.