Journal of Korean Neurosurgical Society

The Korean Neurosurgical Society (대한신경외과학회)
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Surgical Treatment of Ten Adults with Spinal Extradural Meningeal Cysts in the Thoracolumbar Spine

  • Xu, Feifan (Department of Neurosurgery, Peking University First Hospital) ;
  • Jian, Fengzeng (Department of Neurosurgery, Xuanwu Hospital, Capital Medical University) ;
  • Li, Liang (Department of Neurosurgery, Peking University First Hospital) ;
  • Guan, Jian (Department of Neurosurgery, Xuanwu Hospital, Capital Medical University) ;
  • Chen, Zan (Department of Neurosurgery, Xuanwu Hospital, Capital Medical University)
  • Received : 2020.08.21
  • Accepted : 2020.10.13
  • Published : 2021.03.01
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Abstract

Objective : To retrospectively analyze the clinical characteristics and surgical experience of 10 adults with spinal extradural meningeal cysts (SEMCs) in the thoracolumbar spine which may further provide evidence for surgical decision-making. Methods : Ten adults with SEMCs in the thoracolumbar spine were surgically treated and enrolled in this study. Clinical manifestations, imaging data, intraoperative findings and postoperative outcome were recorded. Results : Clinical manifestations of SEMCs included motor and sensory dysfunction of the lower limbs and urination and defecation disturbance. The cysts presented as intraspinal occupying lesions dorsal to the spine, ranging from the T8 to L3 level. Defects of eight cases were found on preoperative magnetic resonance imaging (MRI). Selective hemilaminectomy or laminectomy were used to reveal the defect within the cyst, which was further sutured with microscopic technique. The final outcome was excellent or good in seven cases and fair in three cases. No recurrence was observed during follow-up. Conclusion : SEMCs are rare intraspinal cystic lesions. Radiography and MRI are clinically practical methods to assess defects within SEMCs. Selective hemilaminectomy or laminectomy may reduce surgical trauma. Detection and microscopic suturing of the defects are the key steps to adequately decompress the nervous tissue and prevent postoperative recurrence.

Keywords

References

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