Table 2. The distribution of the procedures in iatrogenic pneumomediastinum.

	Number (n)	Percent (%)
Abdominal surgery	7	23.3
Tube Thoracostomy	6	20
Bronchoscopy or Esophagoscopy	6	20
Tracheostomy or neck surgery	5	16.7
Vertebral surgery	4	13.3
Intubation or mechanical ventilation	2	6.7