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A 21-year-old female presented to the emergency department, about 20 minutes after a motorcycle accident. She was agitated and complaining of shortness of breath. Her vital signs were: heart rate 110 bpm, respiratory rate 32/minute, blood pressure 89/67 mmHg, oxygen saturations 79% on room air, temperature 36.5°C and GCS 15. Chest auscultation revealed decreased breath sounds on the left side. The diagnosis of pneumothorax was made for the patient and a left thoracostomy tube was inserted; however, massive air leak was noted and the clinical symptoms did not improve. Computed tomography scan of the chest in the mediastinal window showeda doubtful pathology, crumpled laminated membrane.