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Hemilaminectomy as an Approach for Intradural Extramedullary Tumor Removal.
Leonardo Gilmone Ruschel1, Igor Baroni Cardoso2, Amanda Yumi Ikematu3
1Neurology and Neurosurgery Department, NeuroDOC, Curitiba, Brazil; Neurology and Neurosurgery Department, Santa Cruz Rede D'Or Hospital, Curitiba, Brazil.
World Neurosurgery
|April 29, 2026
Summary
Hemilaminectomy offers a safe and effective minimally invasive surgical option for intradural extramedullary (IDEM) spinal tumors. This approach leads to significant functional improvement and low complication rates, preserving spinal stability.
Area of Science:
- Neurosurgery
- Minimally Invasive Spine Surgery
- Spinal Oncology
Background:
- Intradural extramedullary (IDEM) spinal tumors require effective surgical resection.
- Minimally invasive techniques are increasingly favored for spinal tumor surgery.
- Evaluating novel approaches like hemilaminectomy is crucial for optimizing patient outcomes.
Purpose of the Study:
- To assess the safety and efficacy of hemilaminectomy for IDEM tumor resection.
- To analyze functional outcomes and complication rates associated with this minimally invasive approach.
- To determine the impact of hemilaminectomy on spinal stability.
Main Methods:
- Prospective observational study of 27 patients with IDEM tumors.
- Treatment via hemilaminectomy with intraoperative neurophysiological monitoring.
- Assessment of functional recovery and complications over 12-48 months follow-up.
Main Results:
- Gross total resection achieved in all cases of IDEM tumors.
- Significant functional improvement observed, with a 47% increase in McCormick score.
- Low complication rate of 7.4%, including surgical site infection and CSF fistula.
Conclusions:
- Hemilaminectomy is a safe and effective minimally invasive method for IDEM tumors.
- The procedure yields excellent functional outcomes and preserves spinal stability.
- This technique is recommended for centers with microsurgical expertise.
