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CSF showing a xanthochrome supernatant and sedimentation of erythrocytes after centrifugation

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CSF is from a 73-year-old woman with a ventral dural defect at the level of the second thoracic vertebra with spontaneous intracranial hypotension and recurrent subarachnoid bleeding over more than 10 years. (Source: Weidauer S, Neuhaus E, Hattingen E. Cerebral superficial siderosis: etiology, neuroradiological features and clinical findings. Clin Neuroradiol 2023;33[2]:293-306. Creative Commons Attribution 4.0 International [CC BY 4.0] license, creativecommons.org/licenses/by/4.0.)