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(A,C) Axial head computed tomography (CT) scan with low posterior fossa cuts revealing the retroclival hematomas anterior to the lower brainstem (arrowed); (B) CT surview showing atlanto-axial dislocation (arrowed); (D) sagittal T1 magnetic resonance imaging (MRI) showing retroclival hematoma (arrowed) better demonstrated on the subsequent MRI (13) (modified).
