Transmediastinal gunshot wound
A transmediastinal gunshot wound (TMGSW) is a penetrating injury to a person's thorax in which a bullet enters the mediastinum, possibly damaging some of the major structures in this area. Hemodynamic instability has been reported in about 50% of cases with a mortality rate ranging from 20% to 49%.
Source: Wikipedia — Transmediastinal gunshot wound (CC BY-SA 4.0)