The minimally ipsilateral laminotomy surgery for the treatment of lower cervical Schwannomas

  • Nguyễn Trọng Yên Bệnh viện Trung ương Quân đội 108
  • Trần Quang Dũng Bệnh viện Trung ương Quân đội 108
  • Nguyễn Đức Tùng Bệnh viện Trung ương Quân đội 108

Main Article Content

Keywords

Lower cervical schwannomas, minimally invasive technique, laminectomy, hemilaminectomy, interlaminar foraminotomy

Abstract

Objective: To evaluate the effect of minimally invasive ipsilateral laminotomy for the treatment of lower cervical Schwannomas. Subject and method: A retrospective study. This study include 48 lower cervical Schwannomas were treated from January 2019 to January 2022 at 108 Military Central Hospital. The clinical course preoperative and postoperative (at discharged and 6 months postoperative) was documented using the visual analog scale (VAS), Karnofsky score (KPS) and the Klekamp-Samii score system. Site, size and extension of the lesions were obtained through MRI, according to Sun and Pamir’s classification. Result: Hemilaminectomy was performed in 17 cases, subtotal hemilaminectomy in 13 cases, interlaminar foraminotomy in 18 cases. There were 79.92% total removal and 20.83% gross total removal of the lesion. At discharge, neurological improvement was observed in 46 patients and all patients demonstrated reduction of VAS score and improvement of KPS and Klekamp-Samii’s score. Postoperative X-ray imaging revealed all patients had no signs of spinal instability. Conclusion: The minimally invasive ipsilateral laminotomy may effectively be used instead of traditional laminectomy in the treatment of lower cervical especially schwannomas. This technique may helping to complete removal and preventing postsurgical spinal instability.

Article Details

References

1. Chung AS, Chang K, Liu JC (2021) Minimally invasive intradural tumor resection. World Neurosurg 145: 243. doi: 10.1016/j.wneu.2020.09.129. Epub 2020 Sep 28. PMID: 32992063.
2. Jinnai T, Koyama T (2005) Clinical characteristics of spinal nerve sheath tumors: Analysis of 149 cases. Neurosurgery 56: 510-515. doi: 10.1227/01. NEU.0000153752.59565.BB.
3. Klekamp J, Samii M (1993) Introduction of a score system for the clinical evaluation of patients with spinal processes. Acta Neurochir 123: 221-223.
4. Sridhar K, Ramamurthi R, Vasudevan MC (2001) Giant invasive spinal schwannomas: definition and surgical management. J Neurosurg 94: 210-215.
5. Fassett DR, Clark R, Brockmeyer DL (2006) Cervical spine deformity associated with resection of spinal cord tumors. Neurosurg Focus 20(2):E2.
6. Kaptain GJ, Simmons NE et al (2000) Incidence and outcome of kyphotic deformity following laminectomy for cervical spondylotic myelopathy. J Neurosurg 93(2): 199-204.
7. Lin GZ, Ma CC, Wu C, Si Y (2022) Microscopic resection of lumbar intraspinal tumor through keyhole approach: A clinical study of 54 cases. Beijing Da Xue Xue Bao Yi Xue Ban 54(2): 315-319. Chinese. doi: 10.19723/j.issn.1671-167X.2022.02.019. PMID: 35435198; PMCID: PMC9069023.
8. Turel MK, D’Souza WP, Rajshekhar V (2015) Hemilaminectomy approach for intradural extramedullary spinal tumors: An analysis of 164 patients. Neurosurg Focus 39(02): 9.
9. Lee SE, Jahng T-A, Kim HJ (2015) Different surgical approaches for spinal schwannoma: A single surgeon’s experience with 49 consecutive cases. World Neurosurg 84(06): 1894-1902
10. Sun I, Pamir MN (2017) Non-syndromic spinal schwannomas: A novel classification. Front Neuron doi: 10.3389/fneur.2017.00318.
11. La Rocca H, Macnab I (1974) The laminectomy membrane. Studies in its evolution, characteristics, effects and prophylaxis in dogs (1974). J Bone Joint Surg Br 56: 545-550.
12. Klekamp J, Samii M (2007) Surgery of spinal tumors. Springer Science & Business Media.