pneumomediastinum…

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respiratory system, mediastinal emphysema, pneumomediastinum, air is present, in the mediastinum, space, in the chest between the two lungs, a traumatic injury, pneumomediastinum is uncommon, occurs, air leaks from any part, the lung, airways, mediastinum, one cause, increased pressure, the lungs, airways ruptures the air sacs, airways, allowing air to escape into surrounding structures, such pressure, excessive coughing, sneezing, vomiting, repeated valsalva maneuvers, bearing down to increase abdominal pressure, childbirth, defecation, occur following perforation, the trachea, windpipe, rapid ascents in altitude, scuba diving, pneumomediastinum, occur in association, pneumothorax, pneumomediastinum, not be accompanied by any symptoms, severe chest pain below the sternum, breastbone, radiate, neck, arms, pain worse, breathing, swallowing, a physical examination, feel small bubbles of air under the skin, the chest, arms, neck, a chest x-ray, cat scan, the chest, confirm, air, in the mediastinum, no treatment, the air is gradually absorbed, mediastinum, pneumomediastinum is accompanied by pneumothorax, a chest tube placed, breathing high concentrations of oxygen, allow the air, in the mediastinum to be absorbed more quickly, outlook depends on the disease, events that caused the pneumomediastinum, in rare cases, much air, accumulate, in the mediastinum that veins, compressed, low blood pressure, have severe chest pain, difficulty breathing.