1 At age 65, one out of three people has a hearing loss. 2  60 percent of the people with hearing loss are either in the work force or in educational settings.
The 3 main causes of pneumomediastinum are. 1  Alveolar rupture with dissection of air into the mediastinum. 2  Esophageal perforation. 3  Esophageal or bowel rupture with dissection of air from the neck or the abdomen into the mediastinum.
The disorder is also known by the name Mediastinal emphysema. Both types result from events that cause air to escape from lungs, bowel or airways into the chest cavity. A blunt blow or a penetrating chest trauma, iatrogenic injury or esophageal perforation can cause serious and traumatic pneumomediastinum.