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A Pipeline for 3D Multimodality Image Integration and Computer-assisted Planning in Epilepsy Surgery
Published on: May 20, 2016
Resective epilepsy surgery in pediatric patients with normal MRI: outcomes, challenges, and cost-effectiveness in
Felipe Gutierrez-Pineda1,2, Manuel Vicente Jaramillo-Canastero3, Lucas Lozano-Garcia4
1Department of Neurosurgery, School of Medicine, University of Antioquia, Medellin, Colombia. felipegpp23@gmail.com.
Insights
Pediatric epilepsy surgery for drug-resistant cases with normal MRIs shows promising outcomes, particularly with temporal lobe resections. Advanced imaging aids localization but cost-effective strategies are crucial for resource-limited settings.
Area of Science:
- Pediatric Neurology
- Neurosurgery
- Epileptology
Background:
- Drug-resistant epilepsy in children with normal MRI poses surgical planning challenges.
- Advanced imaging (PET, SPECT, ECOG) aids localization but is costly and less accessible in low-resource settings.
- This study evaluates resective epilepsy surgery outcomes and advanced imaging utility in a middle-income country.
Purpose of the Study:
- To assess the efficacy of resective epilepsy surgery in pediatric patients with normal preoperative MRI.
- To evaluate the role and impact of advanced imaging techniques in surgical planning for this cohort.
- To analyze surgical outcomes in a resource-limited setting.
Main Methods:
- Retrospective cohort study of 12 pediatric patients (mean age 10.21 years) with normal 3T MRI.
- Included resective epilepsy surgery or functional hemispherectomy between 2007-2021 in Medellín, Colombia.
- Collected demographic, clinical, surgical data, and utilized advanced imaging (PET, SPECT) and intraoperative ECOG; outcomes assessed via Engel Scale.
Main Results:
- 83.3% of patients achieved favorable outcomes (Engel Classes I & II) at 2-year follow-up.
- Temporal lobe resections showed a higher seizure freedom rate (50%) than extratemporal (30%), though not statistically significant.
- Reoperations for seizure recurrence occurred in 30% of extratemporal resections; cortical dysplasia found in 33.3% of cases.
Conclusions:
- Resective epilepsy surgery can achieve favorable outcomes in pediatric patients with normal MRIs, with temporal lobe resections being particularly effective.
- Advanced imaging aids in seizure focus localization but its cost necessitates exploring cost-effective surgical strategies.
- Findings underscore the potential for successful epilepsy surgery in resource-limited settings with careful planning.
Background:
Pediatric patients with drug-resistant epilepsy and normal preoperative MRIs present significant challenges in surgical planning. Advanced diagnostic techniques, including PET, SPECT, and intraoperative ECOG, are used to localize seizure foci, but their high cost and limited availability pose challenges, especially in low-resource settings. This study aims to evaluate the outcomes of resective epilepsy surgery in these cases and assess the role of advanced imaging in a middle-income country.
Methods:
This retrospective cohort study included 12 pediatric patients (mean age 10.21 years) with normal preoperative 3 T MRI who underwent resective epilepsy surgery or functional hemispherectomy between 2007 and 2021 at two centers in Medellín, Colombia. Demographic, clinical, and surgical data were collected, including the use of advanced imaging techniques (PET, SPECT) and intraoperative ECOG. Seizure outcomes were assessed using the Engel Epilepsy Surgery Outcome Scale.
Results:
Of the 12 patients, 10 underwent extratemporal resections, and 2 underwent temporal lobe surgery. Seven patients had advanced imaging, and 5 were evaluated with intraoperative ECOG. At 2-year follow-up, 83.3% of patients who underwent resective surgery achieved favorable outcomes (Engel Classes I and II). Temporal lobe resections had a higher rate of seizure freedom (50%) compared to extratemporal resections (30%), although the difference was not statistically significant (p = 0.47). Reoperations due to seizure recurrence were required in 30% of extratemporal resections (p = 0.02). Complications were minimal, with three superficial wound infections. Histopathology revealed cortical dysplasia in 33.3% of cases.
Conclusion:
Epilepsy surgery in pediatric patients with normal MRIs can yield favorable outcomes, especially with temporal lobe resections. Advanced imaging improves localization but remains costly, highlighting the need for cost-effective surgical strategies in resource-limited settings.
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