“…1 In infants, it is caused by injury to the esophagus, trachea, bronchi, or alveoli. 2 Airway injuries are the most common cause for pneumomediastinum in infancy, and can be seen in a variety of conditions, such as perinatal causes (prematurity, induced labor, vacuum extraction, cesarean section with aspiration of amniotic fluid, meconium or blood, treatment for lack of surfactant), resuscitation, pneumonia, or barotrauma from mechanical ventilation. [3][4][5][6][7][8][9][10] On the contrary, esophageal injuries are caused by operative procedures, iatrogenic instrumentation, foreign bodies, or even physical abuse.…”