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Axial CT section at the level of the sigmoid sinus and epitympanum in samples M1 (A), M5 (B), M6 (C), M7 (D), M8 (E), and M10 (F). The white line marks the separation between pneumatization degree III and IV. Samples from images A–C show pneumatization degree III, and the images D–F show pneumatization degree IV. Short white arrows mark the fracture lines highlighted in these sections.
