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Updated: Jul 3, 2026
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Anteromesial Temporal Lobectomy for Medically Intractable Temporal Lobe Epilepsy: An Operative Study
Published on: August 15, 2025
Stereotactic craniotomy for lesions in eloquent areas
A Ranjan1, V Rajshekhar, M J Chandy
1Department of Neurological Sciences, Christian Medical College and Hospital, Vellore, India.
Summary
Stereotactic-guided excisional biopsy using trans-sulcal microsurgical techniques is a safe and effective method for removing small, superficial brain lesions in critical areas. This approach minimizes neurological deficits compared to traditional cortical incisions.
Area of Science:
- Neurosurgery
- Neurology
- Medical Imaging
Background:
- Computed tomography (CT) compatible stereotactic systems are increasingly utilized for intracranial mass lesion management.
- The Brain Research Unit (BRW) stereotactic system is employed for targeted biopsies.
Purpose of the Study:
- To evaluate the safety and efficacy of the BRW stereotactic system for excisional biopsy of small, superficial, solitary cerebral lesions in eloquent areas.
- To compare neurological outcomes between cortical incision and trans-sulcal microsurgical techniques.
Main Methods:
- Retrospective analysis of 78 stereotactic craniotomy cases meeting specific lesion criteria (small, superficial, solitary, eloquent areas).
- Procedures involved either standard cortical incision or trans-sulcal microsurgical excisional biopsy.
- Anesthesia types (local vs. general) and lesion sizes were recorded.
Main Results:
- Trans-sulcal microsurgical biopsy resulted in significantly fewer immediate postoperative neurological deficits (15%) compared to cortical incisions (41%).
- Overall significant neurological deficits occurred in 12.8% of cases, predominantly with cortical incisions.
- One-month follow-up showed minimal residual deficits (2.5%), exclusively in patients with prior cortical incisions.
- No postoperative infections or mortality were reported.
Conclusions:
- CT-guided stereotactic craniotomy combined with trans-sulcal microsurgical techniques offers a safe and effective option for excisional biopsy of small, superficial lesions in eloquent brain regions.
- The trans-sulcal microsurgical approach demonstrates a superior safety profile regarding postoperative neurological deficits compared to cortical incisions.
