ArticleSpinal cord2026
Comparison of surgical and clinical outcomes between ventral and dorsal/lateral thoracic intradural extramedullary meningiomas: a retrospective study.
Article in Spinal cord, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
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10 authors.
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Abstract
STUDY
designRetrospective comparative study.
objectivesTo compare surgical and clinical outcomes of thoracic intradural extramedullary (IDEM) meningiomas based on tumor location, specifically between ventral and dorsal/lateral lesions.
methodsThis study retrospectively analyzed 60 consecutive patients who underwent posterior surgical resection for thoracic IDEM meningiomas at a single institution between 2007 and 2022. Patients were stratified into two groups according to tumor location on preoperative MRI: Ventral group (n = 23) and Dorsal/Lateral group (n = 37). Clinical outcomes were assessed using the modified McCormick scale (MMCS). Surgical parameters and complications were also compared.
resultsPatients in the Ventral group had significantly larger sagittal tumor diameters and higher spinal canal occupancy rates than those in the Dorsal/Lateral group (p < 0.05). Preoperative motor deficits were more frequent in the Ventral group (86.9 vs. 51.3%, p < 0.01). Estimated blood loss was greater in the Ventral group (p = 0.01). Intraoperative motor evoked potential deterioration occurred more often (p = 0.04). Although both groups showed neurological improvement postoperatively, the percentage of patients reaching MMCS Grade I at final follow-up was significantly lower in the Ventral group (17.3 vs. 54.0%, p < 0.01). No tumor recurrence was observed in either group during the follow-up period (mean: 61.4 months).
conclusionsVentrally located thoracic IDEM meningiomas are associated with more severe preoperative motor dysfunction and inferior postoperative neurological recovery compared to dorsal/lateral lesions. These findings highlight the importance of early surgical intervention and tailored surgical planning for ventral tumors to optimize functional outcomes.
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