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J Neurosurg. 2004 Apr;100(4 Suppl Spine):372-4.

Subacute spinal subdural hematoma after spontaneous resolution of cranial subdural hematoma: causal relationship or coincidence? Case report.

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Department of Neurosurgery, Illinois Neurological Institute, University of Illinois College of Medicine at Peoria, Illinois 61637, USA.


The etiopathogenesis of traumatic spinal subdural hematoma (SSH) is uncertain. Unlike the supratentorial subdural space, no bridging veins traverse the spinal subdural space. The authors describe a case of subacute SSH that occurred after spontaneous resolution of traumatic intracranial SDH and suggest a causal relationship between the two. A 23-year-old woman suffered an acute intracranial SDH after a snowboarding accident. There was no clinical or radiological evidence of spine injury. Conservative management of the supratentorial SDH resulted in spontaneous radiologically documented resolution with redistribution of blood in the subdural space. Four days after the injury, the patient started noticing new onset of mild low-back pain. The pain progressively worsened. Magnetic resonance imaging of the lumbosacral spine 10 days after the original injury revealed a large L4-S2 SDH. Ten days after the original injury, bilateral L5-S1 laminotomy and drainage of the subacute spinal SDH were performed. The patient experienced immediate pain relief. The authors hypothesize that in some cases spinal SDH may be related to redistribution of blood from the supratentorial subdural space.

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