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Published on: February 24, 2023
[Surgical treatment of intradural extramedullary lesions by hemilaminectomy]
Juan F Villalonga1, Andrés Cervio1
1Departamento de Neurocirugía del Instituto FLENI, Buenos Aires, Argentina.
Objective:
To evaluate the usefulness of hemilaminectomy as a surgical approach in patients with intradural-extramedullary tumors.
Methods:
Retrospective analysis of patients in which hemilaminectomy was as surgical approach in intradural-extramedullary tumors between June 2006 and December 2015. Demographics, preoperative symptoms, imaging characteristics, intraoperative findings, histological lineage, and postsurgical complications were analyzed. The average follow-up was 48.9 months (6-120 months).
Results:
Fifty-three patients underwent hemilaminectomy. Tumor was located in the cervical level in 5 cases, in the dorsal level in 24, and in the lumbar region in 24 cases. Histological analysis revealed 28 neuromas, 11 meningiomas, 7 ependymomas, and 7 "multiple injuries." Total resection without postsurgical neurologic deficit was possible in 96% of the patients. There were no recurrences on follow-up.
Conclusion:
Hemilaminectomy is an effective approach for the resection of lateralized cervicodorsal intradural-extramedullary tumors. It can also be used to treat midline lesions located in the lumbar level.
