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Air in the cavernous sinus bilaterally (axial brain CT)

(Source: Santucci J, Mullaguri N, Battineni A, Guddeti RR, Newey CR. Paradoxical and retrograde air embolism from pressurized peripheral bolus. Case Rep Neurol Med 2021;2021:1063264. Creative Commons Attribution 4.0 International License [CC BY 4.0],