Adolescent ; Airway Obstruction ; Bronchi ; pathology ; Bronchography ; Child ; Diagnosis, Differential ; Foreign Bodies ; Humans ; Inhalation ; Male ; Obesity, Morbid ; complications ; Prader-Willi Syndrome ; complications ; Radiography, Thoracic ; Sleep Apnea, Obstructive ; complications ; diagnosis ; Thoracic Injuries ; diagnosis ; Tomography, X-Ray Computed ; Trachea ; pathology