Figure 2. CT head showed pneumocephalus (white arrows) within the cavernous sinus and clival venous plexus in the absence of skull base fracture, acute hemorrhage, mass effect or evidence of an acute ischemic infarct.

From

Pulmonary Air embolism Associated with Pneumocephalus: A Case Report

Mohammed Al-Sadawi, Romy Rodriguez Ortega, Naseem Hossain, Yusra Qaiser, Samy I. McFarlane

American Journal of Medical Case Reports. 2020, 8(5), 119-122 doi:10.12691/ajmcr-8-5-3