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Cranial and Spinal Meninges01:19

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The cranial and spinal meninges are complex protective structures surrounding the central nervous system (CNS), consisting of the brain and spinal cord. These meninges consist of the dura mater, the arachnoid mater, and the pia mater. They protect the CNS, provide structural support, and aid in circulating cerebrospinal fluid (CSF).
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These meningeal layers cover the cranium. The dura mater is the outermost layer of cranial meninges. It is a thick and durable membrane of dense...
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Spontaneous Spinal Subdural Hematoma.

Marlijn H de Beer1, Marjolein M Eysink Smeets, Hille Koppen

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Spinal subdural hematomas (SSDHs) are rare, often occurring spontaneously due to coagulation defects, particularly from coumarin use. Thoracic spine SSDHs commonly cause motor and sensory deficits, with surgery improving outcomes for many patients.

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Area of Science:

  • Neurology
  • Neurosurgery
  • Hematology

Background:

  • Spinal subdural hematomas (SSDHs) are uncommon neurological emergencies with diverse etiologies, including trauma, iatrogenic causes, and spontaneous factors like coagulopathy or vascular malformations.
  • This review focuses on spontaneous SSDHs in adults, analyzing their clinical presentation, underlying causes, management strategies, and patient outcomes.

Observation:

  • Spontaneous SSDHs predominantly affect individuals around 60 years old, with a slight female predominance.
  • The thoracic spine is the most common location (40%), frequently presenting with motor deficits (89%), sensory disturbances (64%), and pain.
  • A significant portion of spontaneous SSDHs (48%) are linked to coagulopathies, especially those induced by anticoagulant medications like coumarins (34%).

Findings:

  • Motor symptoms, including paraparesis/paraplegia, and sensory deficits with a distinct sensory level are the most frequent presenting signs.
  • Coagulation disorders, particularly coumarin use, represent a major cause of spontaneous SSDHs.
  • While 72% of patients underwent decompressive laminectomy, outcomes varied, with 59% experiencing a favorable recovery and 34% having a poor prognosis.

Implications:

  • Understanding the specific risk factors, such as coagulopathy, is crucial for early diagnosis and management of spontaneous SSDHs.
  • Prompt surgical decompression may be necessary for patients with significant neurological deficits.
  • Further research into the pathogenesis and optimal treatment of spontaneous SSDHs is warranted to improve patient outcomes.