Delayed Traumatic Tension Pneumocephalus: A Case Report.

BACKGROUND

Traumatic tension pneumocephalus is a rare complication after craniofacial fractures that can cause devastating neurologic deficits if not managed promptly and effectively.

CASE REPORT: A 38-year-old man with no past medical history presented to the Emergency Department (ED) after a motor vehicle crash. He was noted to have an open frontal scalp laceration. Computed tomography (CT) revealed a right frontal subdural hematoma and right medial frontal contusion. There was also a frontal bone fracture extending through the frontal sinus with mild underlying pneumocephalus. He was monitored for cerebrospinal fluid (CSF) leak and was subsequently discharged on postinjury day 9. He re-presented to the ED 14 days post injury with lethargy, confusion, headache, and swelling around his scalp laceration. A CT scan was obtained that revealed a large-volume intraparenchymal pneumocephalus (pneumocerebri) with mass effect and midline shift. The patient was started on 100% oxygen and admitted to the intensive care unit. He was taken to the operating room for evacuation of the pneumocerebri, repair of dural defect, placement of a vascularized pericranial graft, and placement of a lumbar drain. His lumbar drain was removed on postoperative day 3 and he was discharged home neurologically intact on postoperative day 6. At 1 month follow-up he had no evidence of CSF leak and was neurologically intact. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: This case is presented to increase awareness among emergency physicians that traumatic tension pneumocephalus, and in this case, pneumocerebri, is a rare life-threatening neurosurgical emergency in patients with severe craniofacial fractures after blunt or penetrating head trauma. Early temporizing measures in the ED, such as 100% oxygen via nonrebreather face mask, and urgent neurosurgical consultation are indicated to prevent neurologic deterioration.