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Updated: Jul 9, 2026

Double Direct Injection of Blood into the Cisterna Magna as a Model of Subarachnoid Hemorrhage
Published on: August 30, 2020
Ependymoma of conus medullaris presenting as subarachnoid haemorrhage
C T Ulrich1, J Beck, V Seifert
1Neurosurgical Clinic, Johann Wolfgang Goethe-University, Frankfurt/Main, Germany. ulrich@med.uni-frankfurt.de
Abstract:
Subarachnoid haemorrhage (SAH) due to spinal ependymoma is very rare. We report a 37 year old man who presented with typical clinical signs of SAH. Lumbar puncture confirmed SAH but cerebral angiography was negative, and further diagnostic work-up revealed an ependymoma of the conus medullaris as the source of the haemorrhage. A comprehensive review of the literature was conducted. Only 17 patients with spontaneous SAH due to a spinal ependymoma have been reported since 1958. However, in cases of SAH and negative diagnostic findings for cerebral aneurysms or malformations, this aetiology should be considered and work-up of the spinal axis completed.
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