Surgical Management of Spinal Nerve Sheath Tumors

Spinal nerve sheath tumours, most commonly schwannomas and neurofibromas, arise from the peripheral nerve root sheath within the spinal canal. Although benign in the majority of cases, these lesions can exert mass effect on the spinal cord or nerve roots, producing pain, sensory disturbance, motor weakness and gait dysfunction. Magnetic resonance imaging remains the gold standard for diagnosis and surgical planning, delineating tumour extent, foraminal involvement and relationship to adjacent neural structures. The principal therapeutic aim is gross total resection while preserving neurological function and spinal stability. Traditional open approaches such as laminectomy or hemilaminectomy offer wide exposure for complete microsurgical excision of intradural and dumbbell-shaped lesions; more recently, minimally invasive techniques employing tubular retractors or endoscopy have demonstrated reduced tissue disruption and postoperative pain. Intraoperative neurophysiological monitoring provides real-time feedback on motor and sensory pathways, guiding the extent of resection and nerve-root preservation. When extensive bony resection is required, instrumented fixation such as pedicle screw systems may be used to maintain spinal alignment and prevent postoperative instability. Long-term outcomes depend on the extent of resection, with gross total resection associated with low recurrence rates and durable functional improvement. Multidisciplinary care involving neurosurgery, neuroradiology and neurorehabilitation optimises patient selection, perioperative management and functional recovery.

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Surgical Management of Spinal Nerve Sheath Tumors publication trend

The graph below shows the total number of articles in surgical management of spinal nerve sheath tumors across all publications each year (not limited to Nature Index journals).

Technical terms

Schwannoma: a benign tumour of the Schwann cells that form the myelin sheath of peripheral nerves.

Dumbbell tumour: a lesion extending through the intervertebral foramen into both intradural and extradural spaces, resembling a dumbbell shape.

Gross total resection (GTR): complete surgical removal of all visible tumour tissue.

Subtotal resection (STR): partial removal of a tumour, leaving residual tissue in situ.

Laminectomy: surgical excision of the vertebral lamina to expose the spinal canal for tumour removal.

Hemilaminectomy: partial removal of one side of the vertebral lamina, allowing unilateral access.

Minimally invasive surgery (MIS): surgical techniques using small incisions and specialised retractors to reduce tissue trauma.

Intraoperative neurophysiological monitoring (IONM): real-time assessment of neural function during surgery to minimise injury to spinal cord and nerve roots.

References

1. Long-Term Functional Outcomes Following Surgical Treatment of Spinal Schwannomas: A Population-Based Cohort Study. Cancers (2024).
2. Unilateral instrumented fixation for cervical dumbbell tumors. Journal of Orthopaedic Surgery and Research (2014).
3. The Optimal Surgical Approach to Intradural Spinal Tumors: Laminectomy or Hemilaminectomy?. Cureus (2020).
4. Minimally Invasive Resection of an Extradural Far Lateral Lumbar Schwannoma with Zygapophyseal Joint Sparing: Surgical Nuances and Literature Review. Case Reports in Medicine (2014).
5. Do Tumour Size, Type and Localisation Affect Resection Rate in Patients with Spinal Schwannoma?. Medicina (2022).