title: Pneumothorax secondary to ball-valve obstruction during jet ventilation.
mesh_terms: D000402:Airway Obstruction / Q000209:etiology*; D002675:Child, Preschool; D005260:Female; D005350:Fibroma / Q000601:surgery; D006801:Humans; D007822:Laryngeal Neoplasms / Q000601:surgery; D008478:Mediastinal Emphysema / Q000209:etiology; D011030:Pneumothorax / Q000209:etiology*; D011175:Positive-Pressure Respiration / Q000009:adverse effects*; D013352:Subcutaneous Emphysema / Q000209:etiology