Illustration of a child's brain with seizure foci being treated with precision surgery.

Epilepsy Surgery Breakthrough: Can Staged Procedures Offer Children a Seizure-Free Future?

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Rhea Morgan in Health & Wellness October 2026 • 4 min read.

"New research explores how staged epilepsy surgery, enhanced with post-resection monitoring, is transforming outcomes for children with neocortical lesions."


For children battling neocortical epilepsy, where seizures originate from lesions in the brain's outer layer, surgery offers a beacon of hope. However, the complete removal of these seizure-generating zones is a delicate challenge, often determining the long-term success of the procedure. Unlike temporal lobe epilepsy surgery, which has a higher success rate, neocortical epilepsy surgery presents unique obstacles that demand innovative solutions.

A recent study published in "Epilepsy Research" sheds light on a promising approach: staged epilepsy surgery combined with post-resection invasive monitoring (PRM). This method involves an initial surgery to remove the primary lesion, followed by a period of intensive monitoring to detect any remaining seizure activity. If necessary, a second surgery is performed to address these residual epileptogenic zones.

The study, conducted at New York University Langone Health, retrospectively reviewed the outcomes of pediatric patients who underwent this staged surgical approach. The findings suggest that PRM can significantly improve seizure control in children with neocortical epilepsy, offering renewed hope for a seizure-free future.

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Complexity and Timing of Pediatric Epilepsy Surgery

In tuberous sclerosis complex (TSC), presurgical planning is challenging because multiple tubers and a multiplex epileptogenic network can make it difficult to identify the epileptogenic zone. Monitoring after a lesion resection may reveal epileptogenic activity at the resection margins or uncover additional seizure foci. A study of pediatric epilepsy surgery from 2000 to 2018 examined how epilepsy characteristics—including age at onset, age at surgery, epilepsy duration, and the number of anti-seizure medications tried—related to surgery date. Its accompanying report says children with drug-resistant epilepsy continued to be referred late despite guidelines urging prompt referral, while seizure-freedom rates improved after adjustment for increasingly complex cases.

Staged Epilepsy Surgery: A Step-by-Step Approach to Seizure Control

Illustration of a child's brain with seizure foci being treated with precision surgery.

The staged surgical approach offers several key advantages in treating complex neocortical epilepsy. Unlike a single-step resection, which relies solely on pre-operative imaging and monitoring data, the staged approach allows surgeons to:

Precisely target the seizure onset zone: Invasive monitoring helps pinpoint the exact location where seizures originate, ensuring that the resection focuses on the most critical areas.

  • Identify and resect residual epileptogenic activity: PRM can detect seizure activity at the margins of the resection cavity that may have been missed during the initial surgery.
  • Unmask additional seizure foci: In some cases, PRM reveals previously undetected seizure foci, allowing surgeons to address these areas in a subsequent resection.
  • Preserve eloquent cortex: By carefully mapping brain function during invasive monitoring, surgeons can minimize the risk of damaging critical areas responsible for motor, sensory, or language function.
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Reviews of Delays and Treatment Options

A scoping review describes persistent delays to epilepsy surgery for children with drug-resistant epilepsy, despite the potential for improved developmental and seizure outcomes. It synthesizes barriers to pediatric surgery and evaluates interventions intended to overcome those delays. A 2024 pediatrician’s guide describes the expansion of both the number of children undergoing surgery and the available procedures over the past three decades, from resection to neuromodulatory device placement. A 2026 review states that anti-seizure medications are first-line treatment for most children with epilepsy, while surgery is the main treatment for drug-resistant cases.

Benefits, Uncertainty, and Access Barriers

A review of resective surgery for children with tuberous sclerosis found a trend toward better seizure outcomes in more recent cohorts after adjustment for follow-up duration, but it did not reach statistical significance (OR 0.52; 95% CI 0.23–1.17; P = 0.11). A 2022 review describes pediatric epilepsy surgery as an increasingly used, evidence-based option with low complication risks, while noting that advanced diagnostics have widened the range of children who may benefit. Delayed access remains a concern: a 2026 scoping review examines persistent delays and potential ways to overcome them. A 2022 scoping review reports that up to 40% of pediatric epilepsy cases are drug-resistant and says surgery may be considered after two anti-seizure medications fail, yet only a small proportion of eligible patients receive it.

Outcomes Over Time and Treatment Comparisons

A systematic review and meta-analysis reported that seizure freedom after pediatric epilepsy surgery declined over time: 64.8% at one year, 60.3% at five years, and 39.7% at ten years. In a separate meta-analysis of 229 patients across 13 studies of tuberous sclerosis complex, the pooled postoperative seizure-freedom rate was 59%. A single-center randomized trial enrolled 116 patients aged 18 or younger with drug-resistant epilepsy, assigning 57 to surgery plus medical therapy and 59 to medical therapy alone. A 2022 review notes that drug-resistant epilepsy occurs in up to 30% of children with seizures and that about 10% qualify for surgical treatment.

The study's findings highlight the importance of complete resection in achieving long-term seizure control. In 86% of patients who underwent PRM, the monitoring revealed additional epileptogenic activity that warranted further intervention. This data directly influenced the decision to perform a second resection in 55 patients, ultimately leading to improved outcomes.

Looking Ahead: Optimizing Surgical Strategies for Epilepsy

While the study's results are encouraging, the authors acknowledge the limitations of a retrospective, uncontrolled design. Further research with longer follow-up periods is needed to identify more predictors for long-term seizure freedom. However, the findings suggest that staged epilepsy surgery with PRM may offer a valuable approach for children with complex neocortical epilepsy, potentially increasing the likelihood of a seizure-free future.

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Counseling on Surgery and Repeat Procedures

A 2022 evidence-based review describes pediatric epilepsy surgery as a standard management approach, supported by advances in neuroimaging and other diagnostics that have widened the range of children who may benefit. A 2020 systematic review and meta-analysis concludes that surgery was more effective than medical therapy for seizure control, and says outcomes by surgery location, pathology, nonlesional epilepsy, and incomplete resection can inform presurgical counseling. For children whose seizures persist after an initial incomplete procedure, a 2022 systematic review set out to assess the contemporary literature on repeat resection or disconnection surgery. The available source description frames repeat surgery as a question under review rather than providing its outcome findings.

Closing the Pediatric Surgery Treatment Gap

A 2024 report on the national epilepsy surgery landscape identifies a persistent treatment gap in pediatric epilepsy despite the demonstrated safety and effectiveness of surgery. Its stated objective is to investigate the national surgical landscape, but the supplied description does not give results. A 2024 Children’s Hospital Los Angeles article reports that epilepsy affects nearly half a million children in the United States and that only about 1% of patients who should be seen at a comprehensive epilepsy center are referred there. A 2026 Children’s National article highlights research and hands-on surgical innovations as areas shaping the future of epilepsy care.

Support for Families Navigating Surgery

The Pediatric Epilepsy Surgery Alliance describes drug-resistant seizures in childhood as potentially catastrophic. It provides information about several surgical options, including hemispherectomy, TPO disconnection, and lesionectomies. The organization also describes programs intended to support families after a child’s surgery. Its site presents these resources as part of its work to help families affected by childhood seizures.

Long-term seizure freedom across pediatric surgery reports

  • 51%In a tuberous sclerosis complex cohort, 51% were seizure-free at last follow-up, which averaged 7.5 years and ranged from 1 to 21 years.[1]

What these reports show about staged monitoring

Post-resection monitoring can add information about whether epileptogenic tissue remains near the cavity or whether another seizure focus is present. That makes it a way to refine the picture after the first operation, rather than proof that every detected area can safely be removed.[2]

The chart review concerns children with neocortical epilepsy who had resective surgery with post-resection monitoring. Because it reviewed records rather than assigning an intervention, it describes outcomes in this selected group but cannot by itself establish that monitoring caused better seizure control.[2]

How the comparison reports frame pediatric outcomes

A separate pediatric cohort reported favorable long-term outcomes, while the tuberous sclerosis complex report gives a lower seizure-free share after a longer average follow-up. Differences in populations and follow-up make these reports contextual comparisons rather than head-to-head evidence about surgical methods.[1] [3]

The broader surgical cohort also distinguishes seizure freedom from medication status: the share taking no antiseizure medication was smaller than the share seizure-free at one year. These are separate outcome measures and should not be treated as interchangeable.[4]

What remains unresolved about staged procedures

  • When monitoring identifies activity that overlaps eloquent cortex, how do clinicians balance residual seizure risk against preserving function? The record review notes that some patients did not undergo another resection for this reason.[2]
  • Which mechanism best explains persistent seizures in an individual case: inaccurate localization, incomplete removal, a distant focus, newly developed epileptogenic tissue, or a distributed network? The described possibilities point to distinct explanations that monitoring may not resolve on its own.[2] [5]

Sources

  1. Seizure outcome after epilepsy surgery in tuberous sclerosis complex: Results and analysis of predictors from a multicenter study. (pubmed.ncbi.nlm.nih.gov)
  2. Invasive monitoring after resection of epileptogenic neocortical lesions in multistaged epilepsy surgery in children. (pubmed.ncbi.nlm.nih.gov)
  3. Predictors of longitudinal seizure outcomes after epilepsy surgery in childhood (pmc.ncbi.nlm.nih.gov)
  4. Pediatric epilepsy surgery from 2000 to 2018: Changes in referral and surgical volumes, patient characteristics, genetic testing, and post-surgical outcomes (pmc.ncbi.nlm.nih.gov)
  5. MEG abnormalities and mechanisms of surgical failure in neocortical epilepsy (pmc.ncbi.nlm.nih.gov)

About this Article -

Written with AI assistance from published research, and reviewed by the Mystum team. See our About page for more information.

Everything You Need To Know

1

What is neocortical epilepsy surgery, and why is it done?

Neocortical epilepsy surgery is a procedure performed on children whose seizures originate from lesions in the neocortex, which is the outer layer of the brain. It's significant because, unlike temporal lobe epilepsy surgery which has a higher success rate, neocortical epilepsy surgery presents unique challenges. This surgery aims to remove the seizure-generating zones to provide long-term seizure control. However, complete removal is a delicate challenge, making innovative solutions like staged surgery necessary. Without effective treatment, children with neocortical epilepsy may continue to experience debilitating seizures, impacting their development and quality of life.

2

What is staged epilepsy surgery, and why is it considered a better approach?

Staged epilepsy surgery is a surgical approach where, unlike a single surgery, the procedure is divided into steps. Initially, the primary lesion is removed. After this, post-resection monitoring (PRM) is conducted to detect any remaining seizure activity. If needed, a second surgery is performed to address these residual epileptogenic zones. This staged approach is important because it allows for more precise targeting and removal of seizure-generating areas, potentially leading to improved seizure control and better outcomes for children with neocortical epilepsy. This is especially important when dealing with lesions near the eloquent cortex.

3

What does post-resection monitoring (PRM) involve, and why is it a crucial step?

Post-resection monitoring (PRM) is an intensive monitoring period that occurs after the initial surgery in staged epilepsy surgery. During PRM, doctors look for any remaining seizure activity that may have been missed during the first surgery. PRM is significant because it helps identify and resect residual epileptogenic activity and can unmask additional seizure foci. This monitoring ensures a more complete resection of seizure-generating zones, which is vital for long-term seizure control. Without PRM, undetected seizure activity could lead to continued seizures despite the initial surgery.

4

What does 'complete resection' mean in the context of epilepsy surgery, and why is it important?

Complete resection in epilepsy surgery refers to the total removal of all seizure-generating zones within the brain. This is important because it significantly increases the likelihood of long-term seizure control. If any epileptogenic tissue remains, it can continue to cause seizures, negating the benefits of the surgery. The study highlights that in 86% of patients who underwent post-resection monitoring (PRM), additional epileptogenic activity was found, influencing the decision to perform a second resection in 55 patients. This demonstrates that complete resection, guided by PRM, is crucial for achieving a seizure-free future.

5

What is 'eloquent cortex,' and why is it important to preserve it during epilepsy surgery?

Eloquent cortex refers to areas of the brain responsible for critical functions like motor skills, sensory perception, and language. Preserving the eloquent cortex during epilepsy surgery is important to minimize the risk of causing neurological deficits. Surgeons carefully map brain function during invasive monitoring to avoid damaging these vital areas. The staged surgical approach, combined with post-resection monitoring (PRM), helps surgeons preserve the eloquent cortex by precisely targeting seizure onset zones and identifying residual epileptogenic activity, ensuring that the resection focuses on the most critical areas while sparing essential brain functions. Without careful mapping and a staged approach, there's a higher risk of damaging the eloquent cortex, leading to potential long-term disabilities.

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