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Borne A, Perrone-Bertolotti M, Ferrand-Sorbets S, Bulteau C, Baciu M. Insights on cognitive reorganization after hemispherectomy in Rasmussen's encephalitis. A narrative review. Rev Neurosci 2024; 0:revneuro-2024-0009. [PMID: 38749928 DOI: 10.1515/revneuro-2024-0009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 04/26/2024] [Indexed: 05/24/2024]
Abstract
Rasmussen's encephalitis is a rare neurological pathology affecting one cerebral hemisphere, therefore, posing unique challenges. Patients may undergo hemispherectomy, a surgical procedure after which cognitive development occurs in the isolated contralateral hemisphere. This rare situation provides an excellent opportunity to evaluate brain plasticity and cognitive recovery at a hemispheric level. This literature review synthesizes the existing body of research on cognitive recovery following hemispherectomy in Rasmussen patients, considering cognitive domains and modulatory factors that influence cognitive outcomes. While language function has traditionally been the focus of postoperative assessments, there is a growing acknowledgment of the need to broaden the scope of language investigation in interaction with other cognitive domains and to consider cognitive scaffolding in development and recovery. By synthesizing findings reported in the literature, we delineate how language functions may find support from the right hemisphere after left hemispherectomy, but also how, beyond language, global cognitive functioning is affected. We highlight the critical influence of several factors on postoperative cognitive outcomes, including the timing of hemispherectomy and the baseline preoperative cognitive status, pointing to early surgical intervention as predictive of better cognitive outcomes. However, further specific studies are needed to confirm this correlation. This review aims to emphasize a better understanding of mechanisms underlying hemispheric specialization and plasticity in humans, which are particularly important for both clinical and research advancements. This narrative review underscores the need for an integrative approach based on cognitive scaffolding to provide a comprehensive understanding of mechanisms underlying the reorganization in Rasmussen patients after hemispherectomy.
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Affiliation(s)
- Anna Borne
- Univ. Grenoble Alpes, CNRS, LPNC, 38000 Grenoble, France
| | | | - Sarah Ferrand-Sorbets
- Hôpital Fondation Adolphe de Rothschild, Service de Neurochirurgie Pédiatrique, 75019 Paris, France
| | - Christine Bulteau
- Hôpital Fondation Adolphe de Rothschild, Service de Neurochirurgie Pédiatrique, 75019 Paris, France
- Université de Paris-Cité, MC2Lab EA 7536, Institut de Psychologie, F-92100 Boulogne-Billancourt, France
| | - Monica Baciu
- Univ. Grenoble Alpes, CNRS, LPNC, 38000 Grenoble, France
- Neurology Department, CMRR, University Hospital, 38000 Grenoble, France
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Schmidlechner T, Zaddach M, Heinen F, Cornell S, Ramantani G, Rémi J, Vollmar C, Kunz M, Borggraefe I. IQ changes after pediatric epilepsy surgery: a systematic review and meta-analysis. J Neurol 2024; 271:177-187. [PMID: 37770569 PMCID: PMC10770207 DOI: 10.1007/s00415-023-12002-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 09/07/2023] [Accepted: 09/10/2023] [Indexed: 09/30/2023]
Abstract
OBJECTIVE This systematic review aimed to assess the intellectual outcome of children who underwent surgery for epilepsy. METHODS A systematic review of electronic databases was conducted on December 3, 2021, for PubMed and January 11, 2022, for Web of Science. The review was conducted according to the PRISMA guidelines. The included studies reported on intelligence quotient (IQ) or developmental quotient (DQ) before and after epilepsy surgery in children. Studies were included, if the patients had medically intractable epilepsy and if the study reported mainly on curative surgical procedures. We conducted a random-effects meta-analysis to determine the mean change of IQ/DQ. RESULTS Fifty-seven studies reporting on a total of 2593 patients met the inclusion criteria. The mean age at surgery was 9.2 years (± 3.44; range 2.4 months-19.81 years). Thirty-eight studies showed IQ/DQ improvement on a group level, 8 yielded stable IQ/DQ, and 19 showed deterioration. Pooled analysis revealed a significant mean gain in FSIQ of + 2.52 FSIQ points (95% CI 1.12-3.91). The pooled mean difference in DQ was + 1.47 (95% CI - 6.5 to 9.5). The pooled mean difference in IQ/DQ was 0.73 (95% CI - 4.8 to 6.2). Mean FSIQ gain was significantly higher in patients who reached seizure freedom (+ 5.58 ± 8.27) than in patients who did not (+ 0.23 ± 5.65). It was also significantly higher in patients who stopped ASM after surgery (+ 6.37 ± 3.80) than in patients who did not (+ 2.01 ± 2.41). Controlled studies showed a better outcome in the surgery group compared to the non-surgery group. There was no correlation between FSIQ change and age at surgery, epilepsy duration to surgery, and preoperative FSIQ. SIGNIFICANCE The present review indicates that there is a mean gain in FSIQ and DQ in children with medically intractable epilepsy after surgery. The mean gain of 2.52 FSIQ points reflects more likely sustainability of intellectual function rather than improvement after surgery. Seizure-free and ASM-free patients reach higher FSIQ gains. More research is needed to evaluate individual changes after specific surgery types and their effect on long-term follow-up.
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Affiliation(s)
- Tristan Schmidlechner
- Division of Pediatric Neurology, Developmental Medicine and Social Pediatrics, Department of Pediatrics, Dr. Von Hauner Children's Hospital, University Hospital, Ludwig-Maximilians-University Munich, Lindwurmstreet 4, 80337, Munich, Germany
| | - Malin Zaddach
- Division of Pediatric Neurology, Developmental Medicine and Social Pediatrics, Department of Pediatrics, Dr. Von Hauner Children's Hospital, University Hospital, Ludwig-Maximilians-University Munich, Lindwurmstreet 4, 80337, Munich, Germany
| | - Florian Heinen
- Division of Pediatric Neurology, Developmental Medicine and Social Pediatrics, Department of Pediatrics, Dr. Von Hauner Children's Hospital, University Hospital, Ludwig-Maximilians-University Munich, Lindwurmstreet 4, 80337, Munich, Germany
| | - Sonia Cornell
- Division of Pediatric Neurology, Developmental Medicine and Social Pediatrics, Department of Pediatrics, Dr. Von Hauner Children's Hospital, University Hospital, Ludwig-Maximilians-University Munich, Lindwurmstreet 4, 80337, Munich, Germany
| | - Georgia Ramantani
- Department of Neuropediatrics, University Children's Hospital, Zurich, Switzerland
- University of Zurich, Zurich, Switzerland
| | - Jan Rémi
- Department of Neurology, University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany
- Comprehensive Epilepsy Center, University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Christian Vollmar
- Department of Neurology, University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany
- Comprehensive Epilepsy Center, University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Mathias Kunz
- Department of Neurosurgery, University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany
- Comprehensive Epilepsy Center, University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Ingo Borggraefe
- Division of Pediatric Neurology, Developmental Medicine and Social Pediatrics, Department of Pediatrics, Dr. Von Hauner Children's Hospital, University Hospital, Ludwig-Maximilians-University Munich, Lindwurmstreet 4, 80337, Munich, Germany.
- Comprehensive Epilepsy Center, University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany.
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Sands TT, Gelinas JN. Epilepsy and Encephalopathy. Pediatr Neurol 2024; 150:24-31. [PMID: 37948790 DOI: 10.1016/j.pediatrneurol.2023.09.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 09/14/2023] [Accepted: 09/24/2023] [Indexed: 11/12/2023]
Abstract
BACKGROUND Epilepsy encompasses more than the predisposition to unprovoked seizures. In children, epileptic activity during (ictal) and between (interictal) seizures has the potential to disrupt normal brain development. The term "epileptic encephalopathy (EE)" refers to the concept that such abnormal activity may contribute to cognitive and behavioral impairments beyond that expected from the underlying cause of the epileptic activity. METHODS In this review, we survey the concept of EE across a diverse selection of syndromes to illustrate its broad applicability in pediatric epilepsy. We review experimental evidence that provides mechanistic insights into how epileptic activity has the potential to impact normal brain processes and the development of neural networks. We then discuss opportunities to improve developmental outcomes in epilepsy now and in the future. RESULTS Epileptic activity in the brain poses a threat to normal physiology and brain development. CONCLUSION Until we have treatments that reliably target and effectively treat the underlying causes of epilepsy, a major goal of management is to prevent epileptic activity from worsening developmental outcomes.
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Affiliation(s)
- Tristan T Sands
- Center for Translational Research in Neurodevelopmental Disease, Vagelos College of Physicians and Surgeons, Columbia University, New York, New York; Departments of Neurology and Pediatrics, Vagelos College of Physicians and Surgeons, Columbia University, New York, New York.
| | - Jennifer N Gelinas
- Center for Translational Research in Neurodevelopmental Disease, Vagelos College of Physicians and Surgeons, Columbia University, New York, New York; Departments of Neurology and Pediatrics, Vagelos College of Physicians and Surgeons, Columbia University, New York, New York
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Limpo H, Candela-Cantó S, Asensio S, Palacio-Navarro A, Aparicio J, Climent Perin A, Hinojosa J, Rumià J. A multidisciplinary approach to posterior quadrant disconnective epilepsy surgery in pediatric patients. Neurochirurgie 2023; 69:101489. [PMID: 37769566 DOI: 10.1016/j.neuchi.2023.101489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 06/18/2023] [Accepted: 08/25/2023] [Indexed: 10/03/2023]
Abstract
PURPOSE Extensive lesions of the posterior quadrant are a relevant cause of pediatric drug-resistant epilepsy. Early surgery is the best treatment in these cases, but conventional multilobar resections carry a significant risk in pediatric patients. Despite temporo-parieto-occipital (TPO) disconnection being the preferable technique due to the preservation of motor function, studies reporting long-term longitudinal outcomes are still limited. This study aims to analyze seizures and developmental outcomes after TPO disconnection. METHODS A prospective analysis was carried out on 12 children who underwent TPO disconnection. RESULTS TPO disconnection was performed in 12 pediatric patients aged between 14 months and 18 years (median 6.29 years). The average age of seizure onset was 0.97 ± 1.22 years. Causes of TPO included perinatal ischemia in 4 patients and malformation of cortical development (MCD) in 8 patients. The presenting seizure types were focal motor impaired awareness seizures in 7 children and generalized in 5. The affected hemisphere was the right in 9 patients and the left in 3. In half of the patients, the temporal approach was performed through T1, and in the other 50%, it was performed through T2. After neuropsychological examination, 2 children improved, 7 remained stable, 2 patients presented stagnation and 1 declined. Regarding postoperative complications, nonresorptive hydrocephalus and an asymptomatic caudate nucleus infarct were observed. After a median follow-up of 2 years, 9 patients were in Engel's Class I seizure outcome. CONCLUSION TPO disconnection is a safe and effective motor-sparing epilepsy surgery for children with refractory seizures located in the posterior quadrant that prevents further cognitive deterioration.
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Affiliation(s)
- Hiria Limpo
- Department of Neurosurgery, Epilepsy Surgery Unit, Member of the ERN EpiCARE, Sant Joan de Déu Barcelona Children's Hospital, University of Barcelona, Barcelona, Spain.
| | - Santiago Candela-Cantó
- Department of Neurosurgery, Epilepsy Surgery Unit, Member of the ERN EpiCARE, Sant Joan de Déu Barcelona Children's Hospital, University of Barcelona, Barcelona, Spain
| | - Silvia Asensio
- Department of Neuropsychology, Epilepsy Surgery Unit, Member of the ERN EpiCARE, Sant Joan de Déu Barcelona Children's Hospital, University of Barcelona, Barcelona, Spain
| | - Andrea Palacio-Navarro
- Department of Neuropsychology, Epilepsy Surgery Unit, Member of the ERN EpiCARE, Sant Joan de Déu Barcelona Children's Hospital, University of Barcelona, Barcelona, Spain
| | - Javier Aparicio
- Department of Neurology, Epilepsy Surgery Unit, Member of the ERN EpiCARE, Sant Joan de Déu Barcelona Children's Hospital, University of Barcelona, Barcelona, Spain
| | - Alejandra Climent Perin
- Department of Neurophysiology, Epilepsy Surgery Unit, Member of the ERN EpiCARE, Sant Joan de Déu Barcelona Children's Hospital, University of Barcelona, Barcelona, Spain
| | - José Hinojosa
- Department of Neurosurgery, Epilepsy Surgery Unit, Member of the ERN EpiCARE, Sant Joan de Déu Barcelona Children's Hospital, University of Barcelona, Barcelona, Spain
| | - Jordi Rumià
- Department of Neurosurgery, Epilepsy Surgery Unit, Member of the ERN EpiCARE, Sant Joan de Déu Barcelona Children's Hospital, University of Barcelona, Barcelona, Spain
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Jehi L, Braun K. Does etiology really matter for epilepsy surgery outcome? Brain Pathol 2021; 31:e12965. [PMID: 34196987 PMCID: PMC8412085 DOI: 10.1111/bpa.12965] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Accepted: 04/01/2021] [Indexed: 12/17/2022] Open
Abstract
Multiple factors influence the outcomes of epilepsy surgery. Prognostic indicators varying from clinical characteristics, imaging findings, ictal, and interictal electrophysiological activity have been linked to surgical outcomes. In this review, we focus on the relatively under‐studied role of the underlying epilepsy histopathology in driving post‐surgical outcomes, specifically focusing on the broad categories of seizure outcomes and cognitive outcomes. For each of these two outcomes of interest, we answer two questions: 1)‐ does etiology matter? and 2)‐ how could it matter? The goal is to review the existing literature on the relationship between etiology and surgical outcomes to provide the best possible judgment as to whether a causal relationship exists between histopathology and the ultimate surgical outcome as an initial step. Then, we delve into the possible mechanisms via which such relationships can be explained. We conclude with a call to action to the epilepsy surgery and histopathology research community to push the mechanistic understanding of the pathology‐outcome interaction and identify actionable knowledge and biomarkers that could inform patient care in a timely fashion. In this review, we focus on the relatively under‐studied role of the underlying epilepsy histopathology in driving post‐surgical outcomes, specifically focusing on the broad categories of seizure outcomes and cognitive outcomes. For each of these two outcomes of interest, we answer two questions: (1) does etiology matter? and (2) how could it matter? We then delve into the mechanisms of these answers.
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Affiliation(s)
- Lara Jehi
- Epilepsy Center, Cleveland Clinic, Cleveland, OH, USA
| | - Kees Braun
- Dept. of Neurology & Neurosurgery, University Medical Center Utrecht, Utrecht University, the Netherlands
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Kadam R, Arimappamagan A, Bhaskara Rao M, Sadashiva N, Mundlamuri RC, Raghavendra K, Asranna A, Viswanathan LG, Mariyappa N, Kulanthaivelu K, Mangalore S, Nagaraj C, Saini J, Bharath RD, Rajeswaran J, Mahadevan A, Satishchandra P, Sinha S. Posterior Quadrant Disconnection for Childhood Onset Sub-Hemispheric Posterior Head Region Epilepsy: Indications in an Indian Cohort and Outcome. Pediatr Neurosurg 2021; 56:538-548. [PMID: 34649244 DOI: 10.1159/000519202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 08/20/2021] [Indexed: 11/19/2022]
Abstract
BACKGROUND Posterior quadrant disconnection (PQD) is an under-utilized surgical technique in the management of refractory epilepsy. There is a dearth of data pertinent to post-PQD seizure outcomes. METHODS This retrospective study analyzed patients with drug-resistant childhood-onset epilepsy who underwent PQD at our center from 2009 to 2018. The clinical, imaging, and electrophysiological data were reviewed. The seizure outcome was noted from the latest follow-up in all patients. RESULTS Fifteen patients underwent PQD, with a mean age at onset of epilepsy of 3.3 ± 4.6 years. All patients had seizure onset in childhood with focal onset of seizures, and in addition, 5 had multiple seizure types. All cases underwent presurgical workup with MRI, video-EEG, psychometry, while PET/MEG was done if required. Engel Ia and ILAE I outcomes were considered to be favorable. The histology of the specimen showed 9 patients (60%) had gliosis, 4 (26.7%) had focal cortical dysplasia (FCD), while 1 patient had nodular heterotopia and another had polymicrogyria-pachygyria complex. Postoperative follow-up was available in 14 cases. One patient was lost to follow-up. Mean follow-up duration for the cohort was 45 + 24 months. At last, follow-up (n = 14), 66.7% (10 cases) had favorable outcome (Engel Ia). At the end of 1-year follow-up, up to 73% (n = 11) of the patients were seizure-free. Four patients developed transient hemiparesis after surgery which improved completely by 3-6 months. CONCLUSIONS Gliosis was more common etiology requiring PQD in our series than Western series, where FCD was more common. PQD is a safe and effective surgical modality in childhood-onset epilepsy with posterior head region epileptogenic focus.
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Affiliation(s)
- Raju Kadam
- Departments of Neurosurgery, NIMHANS, Bangalore, India
| | | | | | | | | | | | - Ajay Asranna
- Department of Neurology, NIMHANS, Bangalore, India
| | | | | | | | | | | | | | | | | | | | | | - Sanjib Sinha
- Department of Neurology, NIMHANS, Bangalore, India
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Memory outcomes following hemispherectomy in children. Epilepsy Behav 2020; 112:107360. [PMID: 32882625 DOI: 10.1016/j.yebeh.2020.107360] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 07/02/2020] [Accepted: 07/15/2020] [Indexed: 11/22/2022]
Abstract
OBJECTIVE A vast proportion of children with epilepsy exhibit memory impairments. Although numerous studies have examined memory performance following pediatric resective epilepsy surgery, little is known about the memory outcomes following hemispherectomy. The few studies that report on memory performance typically include restricted measures, consist of case reports, or do not report on preoperative performance. Given the current limitations, the aim of this study was to delineate pre- and postoperative memory functioning in youth who underwent a hemispherectomy. METHOD Participants included patients who had undergone a hemispherectomy at the Hospital for Sick Children, between 1999 and 2016. Standardized neuropsychological assessments of verbal (digit span, word list recall, word pair recall, stories) and visual (faces, dot locations) memory abilities prior to and after surgery were reviewed. A Wilcoxon signed rank test and effect sizes was completed to compare patients' memory performance to population norms and to assess pre- to postoperative difference scores. RESULTS Thirteen participants were included in the study: five patients completed preoperative assessments only and eight patients completed pre- and postoperative assessments. Preoperatively, patients performed substantially worse relative to population norms as indicated by large effect sizes (r: 0.5-0.9). Postoperatively, effect sizes were large for the majority of the memory tests, demonstrating considerable differences in patients' memory scores over time. When clinically meaningful changes were examined, stable performance was evident on 63% of the memory tasks. CONCLUSION Overall, the results highlight that youth who are eligible for hemispherectomy demonstrate profound memory deficits prior to surgery. In addition, undergoing hemispherectomy was not necessarily associated with declined memory performance, with the majority of patients showing stable scores.
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Sturge-Weber syndrome: an update on the relevant issues for neurosurgeons. Childs Nerv Syst 2020; 36:2553-2570. [PMID: 32564157 DOI: 10.1007/s00381-020-04695-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 05/21/2020] [Indexed: 02/07/2023]
Abstract
PURPOSE Sturge-Weber syndrome (SWS) is a neurocutaneous facomatosis characterized by facial and leptomeningeal angioma, glaucoma, seizures, and neurological disability. Therefore, a challenging multidisciplinary interaction is required for its management. The goal of this paper is to review the main aspects of SWS and to present an illustrative pediatric series. METHODS The pertinent literature has been analyzed, focused mainly on etiopathogenesis, pathology, clinical features, diagnostic tools, management, and outcome of the disease. Moreover, a series of 11 children operated on for refractory epilepsy between 2005 and 2015 (minimum follow-up 5 years, mean follow-up 9.6 years) is reported. The series consists of six boys and five girls with 6.5-month and 16.2-month mean age at seizure onset and at surgery, respectively. Seizures affected all children, followed by hemiparesis and psychomotor delay (81%), glaucoma (54%), and other neurological deficits (45%). RESULTS All children underwent hemispherectomy (anatomical in three cases, functional in two cases, hemispherotomy in six cases); one patient needed a redo hemispherotomy. Mortality was nil; disseminated intravascular coagulation and interstitial pneumonia occurred in one patient each; three children had subdural fluid collection. Eight patients (72%) are in the ILAE Class 1 (completely seizure and aura free), two in Class 2 (only auras, no seizure), and one in Class 3 (1-3 seizure days per year). AEDs discontinuation was possible in 73% of cases. The most important news from the literature concerned the pathogenesis (role of the mutation of the GNAQ gene in the abnormal SWS vasculogenesis), the clinical findings (the features and pathogenesis of the stroke-like episodes are being understood), the diagnostic tools (quantitative MRI and EEG), and both the medical (migraine, seizures) and surgical management (epilepsy). The epileptic outcome of SWS patients is very good (80% are seizure-free), if compared with other hemispheric syndromes. The quality of life is affected by the neurological and cognitive deficits. CONCLUSIONS SWS still is an etiological and clinical challenge. However, the improvements over the time are consistent. In particular, the neurosurgical treatment of refractory epilepsy provides very good results as long as the indication to treatment is correct.
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Silva JR, Sakamoto AC, Thomé Ú, Escorsi-Rosset S, Santos MV, Machado HR, Santos AC, Hamad AP. Left hemispherectomy in older children and adolescents: outcome of cognitive abilities. Childs Nerv Syst 2020; 36:1275-1282. [PMID: 31797069 DOI: 10.1007/s00381-019-04377-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 09/16/2019] [Indexed: 10/25/2022]
Abstract
PURPOSE Hemispherectomy is an effective treatment option for pharmacoresistant epilepsy. Nevertheless, when high cortical functions are at risk during the presurgical evaluation, especially for older children, and for the left hemisphere, despite good seizure outcome, the anticipated decrease of cognitive functions may prevent a decision to perform surgery. The objective of this study is to report the cognitive outcome, based on verbal and performance intelligence skills, in a series of older children and adolescents who underwent left hemispherectomy, analyzing the risks (residual cognitive deficit) and benefits (seizure reduction) of surgery. METHODS We retrospectively analyzed pre- and postoperative clinical and neuropsychological data from our patients who underwent left hemispherectomy, aged between 6 and 18 years. RESULTS We included 15 patients, with a mean follow-up of 3.1 years, 12 patients (80%) were Engel I, and the other three were classified as Engel II, III, and IV. Nine patients were tested by Wechsler Scales of Intelligence; postsurgically all but one kept the same intellectual levels; verbal intelligence quotient (VIQ) remained unchanged in 13 and improved in one, whereas performance intelligence quotient (PIQ) decreased in four patients. Both Total Vineland and communication scores of Vineland Adaptive Behavior Scales were obtained in six patients: in all, scores were classified as deficient adaptive functioning pre- and postoperatively, remaining unchanged. CONCLUSION The evaluation of the remaining intellectual abilities after left hemispherectomy in older children and adolescents is useful to discuss the risks and benefits of this surgery, enabling better and safer decisions regarding surgical indications and timing.
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Affiliation(s)
- Joceli Rodrigues Silva
- Department of Neurosciences and Behavioural Sciences, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Américo Ceiki Sakamoto
- Department of Neurosciences and Behavioural Sciences, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.,Center for Epilepsy Surgery (CIREP) Centro de Cirurgia de Epilepsia - HCFMRP-USP, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes 3900 Monte Alegre, Ribeirão Preto, SP, CEP 14049-900, Brazil
| | - Úrsula Thomé
- Center for Epilepsy Surgery (CIREP) Centro de Cirurgia de Epilepsia - HCFMRP-USP, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes 3900 Monte Alegre, Ribeirão Preto, SP, CEP 14049-900, Brazil
| | - Sara Escorsi-Rosset
- Center for Epilepsy Surgery (CIREP) Centro de Cirurgia de Epilepsia - HCFMRP-USP, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes 3900 Monte Alegre, Ribeirão Preto, SP, CEP 14049-900, Brazil.,Radiology Division-Internal Medicine Department, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Marcelo Volpon Santos
- Center for Epilepsy Surgery (CIREP) Centro de Cirurgia de Epilepsia - HCFMRP-USP, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes 3900 Monte Alegre, Ribeirão Preto, SP, CEP 14049-900, Brazil.,Division of Pediatric Neurosurgery, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Hélio Rubens Machado
- Center for Epilepsy Surgery (CIREP) Centro de Cirurgia de Epilepsia - HCFMRP-USP, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes 3900 Monte Alegre, Ribeirão Preto, SP, CEP 14049-900, Brazil.,Division of Pediatric Neurosurgery, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Antônio Carlos Santos
- Center for Epilepsy Surgery (CIREP) Centro de Cirurgia de Epilepsia - HCFMRP-USP, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes 3900 Monte Alegre, Ribeirão Preto, SP, CEP 14049-900, Brazil.,Radiology Division-Internal Medicine Department, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Ana Paula Hamad
- Department of Neurosciences and Behavioural Sciences, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil. .,Center for Epilepsy Surgery (CIREP) Centro de Cirurgia de Epilepsia - HCFMRP-USP, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes 3900 Monte Alegre, Ribeirão Preto, SP, CEP 14049-900, Brazil.
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Leal STF, Santos MV, Thomé U, Machado HR, Escorsi-Rosset S, Dos Santos AC, Wichert-Ana L, Leite JP, Fernandes RMF, Sakamoto AC, Hamad APA. Impact of epilepsy surgery on quality of life and burden of caregivers in children and adolescents. Epilepsy Behav 2020; 106:106961. [PMID: 32199346 DOI: 10.1016/j.yebeh.2020.106961] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 01/31/2020] [Accepted: 02/01/2020] [Indexed: 02/06/2023]
Abstract
OBJECTIVE The objective of this study was to analyze the impact of pediatric epilepsy surgery on the quality of life (QOL), determining whether patients improve, worsen, or maintain their preoperative patterns, as it relates to the burden of caregivers, as well as evaluating potential related factors, from both the children and caregivers perspectives. MATERIAL AND METHODS This is a retrospective study of children and adolescents who underwent epilepsy surgery and were evaluated through clinical data, videoelectroencephalogram (V-EEG), neuroimaging findings, neuropsychological testing, and aspects of QOL. These assessments were performed prior to surgery and after six months and two years of follow-up. Quality of life was assessed with epilepsy-specialized questionnaires, namely Questionnaire health-related quality of life for children with epilepsy (QVCE-50), Autoquestionnaire Qualité de Vie Enfant Image Scale (AUQUEI), Quality of life in epilepsy inventory for adolescents (QOLEI-AD-48); and burden of caregivers with Burden Interview - ZARIT scale. Postoperative changes in QVCE-50 were quantified using measures of the analysis of variance (ANOVA MR) for comparison of the difference between the three times of the scale and domains. RESULTS Fifty patients were enrolled. Of these, 27 (54%) were male, with a mean age at surgery of 8.2 years (range: 1-18 years). Thirty-five patients (70%) were Engel I and one was Engel II (2%) at six months of follow-up, whereas 28 (56%) were Engel I and 32 (64%) were Engel I or II at two years of follow-up. Preoperatively, 21 (42%) presented with moderate or severe intellectual disability. Postoperative cognitive evaluations at the two-year follow-up showed 18 (36%) maintained similar deficits. The QVCE-50 showed postoperative improvement in the two-year follow-up period, but not at six months after surgery. Postoperative improvements were associated mainly with better seizure outcome. Autoperception evaluations were limited because of the clinical and cognitive severity of patients. The burden of caregivers was quoted as mild to moderate and remained unchanged postoperatively. CONCLUSIONS Children and adolescents with surgically treated epilepsy reach a good seizure outcome, stabilize in intellectual and adaptive functions, and have an increase in QOL, from the caregiver's perspective. Nevertheless, their burden remains unchanged. Seizure outcome is the main factor for improvement in the QOL. The upgrading of structured questionnaires and QOL instruments specific to pediatric epilepsy can be helpful to assess patient- and caregiver-reported surgical outcomes, allowing for better planning of therapeutic approaches.
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Affiliation(s)
- Suenia Timotheo Figueiredo Leal
- Department of Neurosciences and Behavioural Sciences, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Marcelo Volpon Santos
- Center for Epilepsy Surgery (CIREP), Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil; Division of Pediatric Neurosurgery, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Ursula Thomé
- Center for Epilepsy Surgery (CIREP), Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Helio Rubens Machado
- Center for Epilepsy Surgery (CIREP), Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil; Division of Pediatric Neurosurgery, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Sara Escorsi-Rosset
- Center for Epilepsy Surgery (CIREP), Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil; Radiology Division-Internal Medicine Department, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Antônio Carlos Dos Santos
- Center for Epilepsy Surgery (CIREP), Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil; Radiology Division-Internal Medicine Department, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Lauro Wichert-Ana
- Center for Epilepsy Surgery (CIREP), Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil; Section of Nuclear Medicine, Internal Medicine Department, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - João Pereira Leite
- Department of Neurosciences and Behavioural Sciences, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Regina Maria França Fernandes
- Department of Neurosciences and Behavioural Sciences, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Ameriko Ceiki Sakamoto
- Department of Neurosciences and Behavioural Sciences, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil; Center for Epilepsy Surgery (CIREP), Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Ana Paula Andrada Hamad
- Department of Neurosciences and Behavioural Sciences, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil; Center for Epilepsy Surgery (CIREP), Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.
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Harris WB, Phillips HW, Chen JS, Weil AG, Ibrahim GM, Fallah A. Seizure outcomes in children with Rasmussen's encephalitis undergoing resective or hemispheric epilepsy surgery: an individual participant data meta-analysis. J Neurosurg Pediatr 2019; 25:274-283. [PMID: 31812145 DOI: 10.3171/2019.9.peds19380] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 09/23/2019] [Indexed: 11/06/2022]
Abstract
OBJECTIVE The objective of this study was to perform an individual participant data meta-analysis to identify preoperative factors associated with a good seizure outcome in children with Rasmussen's encephalitis (RE) undergoing resective or hemispheric epilepsy surgery. METHODS Electronic databases (PubMed, Web of Science, CINAHL) were searched with no language or date restrictions to identify cohort studies of consecutive participants undergoing resective surgery that reported seizure outcomes. The authors recorded all preoperative factors that could plausibly be associated with seizure outcomes and used Cox regression analysis to identify which of these variables were associated with seizure freedom (i.e., Engel class I). RESULTS Of 720 citations, 19 articles reporting on 187 participants were eligible. Seizure freedom (Engel class I) was observed in 113 participants (60.4%). On univariate analyses, younger age at disease onset (hazard ratio [HR] 0.906, p = 0.001), younger age at surgery (HR 0.928, p < 0.001), shorter time to surgery (HR 0.921, p = 0.001), and hemispherectomy (HR 0.283, p < 0.001) were all associated with longer time to postoperative seizure recurrence. Additionally, multivariable analysis including the aforementioned variables showed that younger age at surgery (HR 0.946, p = 0.043) and hemispherectomy (HR 0.297, p < 0.001) were independently and significantly associated with a greater time to seizure recurrence and longer duration of seizure freedom. CONCLUSIONS The majority of pediatric patients undergoing resective or hemispheric surgery for RE achieve good seizure outcome. Although small retrospective cohort studies are inherently prone to bias, the best available evidence utilizing individual participant data suggests hemispheric surgery and younger age at surgery are associated with good seizure outcomes following epilepsy surgery. Large, multicenter observational studies with long-term follow-up are required to evaluate the risk factors identified in this review.
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Affiliation(s)
- William B Harris
- 1John A. Burns School of Medicine, University of Hawai'i, Honolulu, Hawai'i
| | - H Westley Phillips
- 2Department of Neurosurgery, University of California, Los Angeles, California
| | | | - Alexander G Weil
- 4Division of Neurosurgery, Ste. Justine Hospital, University of Montreal, Quebec, Canada; and
| | - George M Ibrahim
- 5Division of Neurosurgery, The Hospital for Sick Children, University of Toronto, Ontario, Canada
| | - Aria Fallah
- 2Department of Neurosurgery, University of California, Los Angeles, California
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Braams O, Maher C, Jennekens-Schinkel A, Braun K, van Nieuwenhuizen O, van Schooneveld M, Schappin R. Social functioning of children after epilepsy surgery: A literature review. Epilepsy Behav 2019; 96:210-218. [PMID: 31174069 DOI: 10.1016/j.yebeh.2019.04.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 04/17/2019] [Accepted: 04/19/2019] [Indexed: 11/30/2022]
Abstract
This literature review on social functioning of children after epilepsy surgery is based on 24 papers addressing two categories of social functioning: social cognition (n = 4) and general social functioning (n = 20). Overall, studies that compared with healthy peers revealed children who had undergone epilepsy surgery to have more problems in both social cognition and general social functioning. Half of the studies found some improvement in social functioning in the first year(s) after epilepsy surgery, but this pertained to general social functioning, not to social cognition. The persistence of the problems in social cognition after surgery may be related to the critical period of brain maturation, lacking improvement of impairments in related cognitive domains or to a defective underlying brain condition - rather than to the epilepsy. Problems in general social functioning may be explained by the adjustments the children and their families had to make because of the child's drug-resistant epilepsy and difficulties to adjust to the new situation after surgery. The neurological and behavioral explanations are likely to be interrelated in light of the multifaceted and complex nature of social functioning. Epilepsy surgery does not appear to solve the problems in social functioning associated with having had drug-resistant epilepsy. As social functioning is an important aspect of healthy development, it should be assessed comprehensively in order to obtain a knowledge base that allows 1) proper treatment of children with epilepsy (CwE) and 2) counseling patients and families prior to and after epilepsy surgery.
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Affiliation(s)
- Olga Braams
- Department of Pediatric Psychology and Social Work, University Medical Center Utrecht, PO Box 85090, 3508 AB Utrecht, the Netherlands; Brain Center Rudolf Magnus, University Medical Center Utrecht, PO Box 85500, 3508 GA Utrecht, the Netherlands.
| | - Caragh Maher
- Department of Pediatric Psychology and Social Work, University Medical Center Utrecht, PO Box 85090, 3508 AB Utrecht, the Netherlands.
| | - Aag Jennekens-Schinkel
- Brain Center Rudolf Magnus, University Medical Center Utrecht, PO Box 85500, 3508 GA Utrecht, the Netherlands.
| | - Kees Braun
- Brain Center Rudolf Magnus, University Medical Center Utrecht, PO Box 85500, 3508 GA Utrecht, the Netherlands; Department of Child Neurology, University Medical Center Utrecht, PO Box 85090, 3508 AB Utrecht, the Netherlands.
| | - Onno van Nieuwenhuizen
- Brain Center Rudolf Magnus, University Medical Center Utrecht, PO Box 85500, 3508 GA Utrecht, the Netherlands.
| | - Monique van Schooneveld
- Department of Pediatric Psychology and Social Work, University Medical Center Utrecht, PO Box 85090, 3508 AB Utrecht, the Netherlands; Brain Center Rudolf Magnus, University Medical Center Utrecht, PO Box 85500, 3508 GA Utrecht, the Netherlands.
| | - Renske Schappin
- Department of Pediatric Psychology and Social Work, University Medical Center Utrecht, PO Box 85090, 3508 AB Utrecht, the Netherlands.
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EEG lateralization and seizure outcome following peri-insular hemispherotomy for pediatric hemispheric epilepsy. Childs Nerv Syst 2019; 35:1189-1195. [PMID: 30701299 DOI: 10.1007/s00381-019-04067-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 01/16/2019] [Indexed: 10/27/2022]
Abstract
OBJECTIVE To determine whether preoperative non-lateralizing scalp electroencephalography (EEG) influences seizure outcome following peri-insular hemispherotomy (PIH) in pediatric hemispheric epilepsy. METHODS Retrospective data was collected on all 45 pediatric patients who underwent PIH between 2005 and 2016. All underwent a basic pre-surgical evaluation consisting of detailed history and examination, neuropsychological assessment, MRI, and EEG. SPECT/PET, fRMI, or Wada testing were done in only eight patients. Seizure outcome was assessed using the Engel classification. RESULTS Among those who underwent hemispherotomy, 20 (44%) were females. Mean age at surgery was 8 ± 4.3 years and mean duration of symptoms was 5.2 ± 3.7 years. The most common etiologies of hemispheric epilepsy were hemiconvulsion-hemiplegia epilepsy syndrome, Rasmussen encephalitis, and post-encephalitic sequelae, together comprising 27 (60%) patients. Among the 44 patients with follow-up data (mean duration 48 ± 33 months), seizure freedom (Engel class I) was attained by 41 (93.2%). Anti-epileptic medications were stopped or decreased in 36 (82%). Seventeen (38.6%) patients had non-lateralizing EEG. Seizure outcome was not related to lateralization of EEG activity. CONCLUSIONS PIH provides excellent long-term seizure control in patients despite the presence of non-lateralizing epileptiform activity, although occurrence of acute postoperative seizures may be higher. Routine SPECT/PET may not be required in patients with a non-lateralizing EEG if there is good clinico-radiological concordance.
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Cossu G, Messerer M, Daniel RT. Letter to the Editor. A new technique for stroke-induced refractory epilepsy. J Neurosurg Pediatr 2019; 23:532-533. [PMID: 30738391 DOI: 10.3171/2018.11.peds18655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Kadish NE, Bast T, Reuner G, Wagner K, Mayer H, Schubert-Bast S, Wiegand G, Strobl K, Brandt A, Korinthenberg R, van Velthoven V, Schulze-Bonhage A, Zentner J, Ramantani G. Epilepsy Surgery in the First 3 Years of Life: Predictors of Seizure Freedom and Cognitive Development. Neurosurgery 2018; 84:E368-E377. [DOI: 10.1093/neuros/nyy376] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 07/18/2018] [Indexed: 11/12/2022] Open
Affiliation(s)
- Navah Ester Kadish
- Department of Neuropediatrics, University Medical Centre Schleswig-Holstein, Kiel, Germany
- Department of Medical Psychology and Medical Sociology, University Medical Centre Schleswig-Holstein, Kiel, Germany
| | - Thomas Bast
- Epilepsy Centre Kork, Kehl-Kork, Germany
- Medical Faculty, University of Freiburg, Freiburg, Germany
| | - Gitta Reuner
- Section Neuropediatrics and Inborn Errors of Metabolism, University Children's Hospital, Heidelberg, Germany
| | | | - Hans Mayer
- Epilepsy Centre Kork, Kehl-Kork, Germany
| | - Susanne Schubert-Bast
- Section Neuropediatrics and Inborn Errors of Metabolism, University Children's Hospital, Heidelberg, Germany
- Department of Neuropediatrics, Goethe- University, Frankfurt am Main, Germany
| | - Gert Wiegand
- Department of Neuropediatrics, University Medical Centre Schleswig-Holstein, Kiel, Germany
| | | | - Armin Brandt
- Epilepsy Centre, University Hospital Freiburg, Germany
| | - Rudolf Korinthenberg
- Division of Neuropediatrics and Muscular Disorders, Department of Paediatrics and Adolescent Medicine, University Hospital Freiburg, Germany
| | | | | | - Josef Zentner
- Department of Neurosurgery, University Hospital Freiburg, Germany
| | - Georgia Ramantani
- Medical Faculty, University of Freiburg, Freiburg, Germany
- Epilepsy Centre, University Hospital Freiburg, Germany
- Department of Neuropediatrics, University Children's Hospital Zürich, Switzerland
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Moletto A, Bagnasco I, Dassi P, Vigliano P. Long term neurocognitive improvement after "late" right hemispherectomy: case report and review of the literature. Childs Nerv Syst 2018; 34:1599-1603. [PMID: 29564536 DOI: 10.1007/s00381-018-3775-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 03/06/2018] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To study the long-term neurocognitive changes of a right-handed girl with intractable epilepsy after late right hemispherectomy and compare them with data in the literature. METHOD The girl was affected by an epileptic encephalopathy associated with right fronto-temporo-parietal polymicrogyria; she was submitted to right hemispherectomy at the age of 5 and examined with cognitive and neuropsychological tests at the age of 17 years. The girl took advantage of neurocognitive rehabilitation for several years; she is currently seizure-free and off therapy. RESULTS At the end of the follow-up, the full-scale IQ is stable and within the normal range (p = 88). As the discrepancy between verbal IQ (pp = 120) and performance IQ (pp = 71) is significantly high, the girl was subjected to neurocognitive evaluation with the following results: verbal problem solving, verbal short- and long-term memory, and executive functions are within normal range. The most fragile functional areas are visual and spatial reasoning, verbal working memory, short-term visuospatial memory, visual attention, and processing speed, all > 2 SD. The spatial tests, such as coding, matrix reasoning, picture concepts, and arithmetic reasoning (which are favored by other functions such as associative memory and learning ability), are less severely impaired. CONCLUSIONS These findings show that good conceptual skills and verbal reasoning can compensate for some deficits in visual-perceptual and visuospatial functions.
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Affiliation(s)
- Alessandra Moletto
- Division of Child Neuropsychiatry, Martini Hospital, via Tofane 71, 10141, Torino, Italy
| | - Irene Bagnasco
- Division of Child Neuropsychiatry, Martini Hospital, via Tofane 71, 10141, Torino, Italy
| | - Patrizia Dassi
- Division of Child Neuropsychiatry, Martini Hospital, via Tofane 71, 10141, Torino, Italy
| | - Piernanda Vigliano
- Division of Child Neuropsychiatry, Martini Hospital, via Tofane 71, 10141, Torino, Italy.
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Cossu G, Lebon S, Seeck M, Pralong E, Messerer M, Roulet-Perez E, Daniel RT. Periinsular anterior quadrantotomy: technical note. J Neurosurg Pediatr 2018; 21:124-132. [PMID: 29219786 DOI: 10.3171/2017.8.peds17339] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Refractory frontal lobe epilepsy has been traditionally treated through a frontal lobectomy. A disconnective technique may allow similar seizure outcomes while avoiding the complications associated with large brain resections. The aim of this study was to describe a new technique of selective disconnection of the frontal lobe that can be performed in cases of refractory epilepsy due to epileptogenic foci involving 1 frontal lobe (anterior to the motor cortex), with preservation of motor function. In addition to the description of the technique, an illustrative case is also presented. This disconnective procedure is divided into 4 steps: the suprainsular window, the anterior callosotomy, the intrafrontal disconnection, and the frontobasal disconnection. The functional neuroanatomy is analyzed in detail for each step of the surgery. It is important to perform cortical and subcortical electrophysiological mapping to guide this disconnective procedure and identify eloquent cortices and intact neural pathways. The authors describe the case of a 9-year-old boy who presented with refractory epilepsy due to epileptogenic foci localized to the right frontal lobe. MRI confirmed the presence of a focal cortical dysplasia of the right frontal lobe. A periinsular anterior quadrant disconnection (quadrantotomy) was performed. The postoperative period was uneventful, and the patient was in Engel seizure outcome Class I at the 3-year follow-up. A significant cognitive gain was observed during follow-up. Periinsular anterior quadrantotomy may thus represent a safe technique to efficiently treat refractory epilepsy when epileptogenic foci are localized to 1 frontal lobe while preserving residual motor functions.
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Affiliation(s)
| | - Sebastien Lebon
- 2Unit of Pediatric Neurology and Neurorehabilitation, Department of Pediatrics, University Hospital of Lausanne; and
| | - Margitta Seeck
- 3Epilepsy Unit, Department of Neurology, University Hospital of Geneva, Switzerland
| | | | | | - Eliane Roulet-Perez
- 2Unit of Pediatric Neurology and Neurorehabilitation, Department of Pediatrics, University Hospital of Lausanne; and
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Dorfer C, Ochi A, Snead OC, Donner E, Holowka S, Widjaja E, Rutka JT. Functional hemispherectomy for catastrophic epilepsy in very young infants: technical considerations and complication avoidance. Childs Nerv Syst 2015; 31:2103-9. [PMID: 26099232 DOI: 10.1007/s00381-015-2794-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 06/10/2015] [Indexed: 11/27/2022]
Abstract
PURPOSE We report on our experience in performing peri-insular functional hemispherectomy (PIH) in very young infants with catastrophic epilepsy. METHODS We retrospectively reviewed the medical charts of all infants with catastrophic epilepsy that underwent PIH under the age of 4 months at our institution. RESULTS Four infants (three female, one male) were included (median age at time of surgery 2.9 months, range from 2.4 to 4.2 months; median patient's weight at time of surgery 5650 g, range from 4300 to 7500 g). None of the patients experienced hemodynamic instability during surgery. All four patients were given red blood cell replacement (median 435 ml, range from 230 to 800 ml), three of the four patients experienced coagulopathy during surgery and were given platelet cells transfusion in one (50 ml) and fresh frozen plasma in two patients (191 and 320 ml). Two patients experienced severe complications that, however, did not cause a permanent morbidity due to prompt diagnosis and correct management. After a median follow-up time of 4.3 years (range from 1.3 to 7.9 years), three of four patients are completely seizure free. The remaining patient is experiencing brief daily staring episodes. All of them have a hemiparesis but are fully ambulatory and have a useful upper limb function. CONCLUSION In catastrophic epilepsy, PIH within the first months of life is feasible provided that an experienced multidisciplinary team is involved. Awareness of surgical challenges and potential complications is indispensible when the life-threatening nature of the epilepsy compels neurosurgeons to operate at this very young age.
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Affiliation(s)
- Christian Dorfer
- Division of Pediatric Neurosurgery, The Hospital for Sick Children, Suite 1503, 555 University Avenue, Toronto, Ontario, M5G 1X8, Canada
- Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Ayako Ochi
- Division of Pediatric Neurology, The Hospital for Sick Children, Toronto, ON, Canada
- Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - O Carter Snead
- Division of Neuroradiology, The Hospital for Sick Children, Toronto, ON, Canada
- Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Elizabeth Donner
- Division of Pediatric Neurology, The Hospital for Sick Children, Toronto, ON, Canada
- Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Stephanie Holowka
- Division of Neuroradiology, The Hospital for Sick Children, Toronto, ON, Canada
- Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Elysa Widjaja
- Division of Neuroradiology, The Hospital for Sick Children, Toronto, ON, Canada
- Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - James T Rutka
- Division of Pediatric Neurosurgery, The Hospital for Sick Children, Suite 1503, 555 University Avenue, Toronto, Ontario, M5G 1X8, Canada.
- Faculty of Medicine, University of Toronto, Toronto, ON, Canada.
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Shurtleff HA, Barry D, Firman T, Warner MH, Aguilar-Estrada RL, Saneto RP, Kuratani JD, Ellenbogen RG, Novotny EJ, Ojemann JG. Impact of epilepsy surgery on development of preschool children: identification of a cohort likely to benefit from early intervention. J Neurosurg Pediatr 2015; 16:383-92. [PMID: 26140458 DOI: 10.3171/2015.3.peds14359] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT Outcomes of focal resection in young children with early-onset epilepsy are varied in the literature due to study differences. In this paper, the authors sought to define the effect of focal resection in a small homogeneous sample of children who were otherwise cognitively intact, but who required early surgical treatment. Preservation of and age-appropriate development of intelligence following focal resection was hypothesized. METHODS Cognitive outcome after focal resection was retrospectively reviewed for 15 cognitively intact children who were operated on at the ages of 2-6 years for lesion-related, early-onset epilepsy. Intelligence was tested prior to and after surgery. Effect sizes and confidence intervals for means and standard deviations were used to infer changes and differences in intelligence between 1) groups (pre vs post), 2) left versus right hemisphere resections, and 3) short versus long duration of seizures prior to resection. RESULTS No group changes from baseline occurred in Full Scale, verbal, or nonverbal IQ. No change from baseline intelligence occurred in children who underwent left or right hemisphere surgery, including no group effect on verbal scores following surgery in the dominant hemisphere. Patients with seizure durations of less than 6 months prior to resection showed improvement from their presurgical baseline in contrast to those with seizure duration of greater than 6 months prior to surgery, particularly in Wechsler Full Scale IQ and nonverbal intelligence. CONCLUSIONS This study suggests that surgical treatment of focal seizures in cognitively intact preschool children is likely to result in seizure remediation, antiepileptic drug discontinuation, and no significant decrement in intelligence. The latter finding is particularly significant in light of the longstanding concern associated with performing resections in the language-dominant hemisphere. Importantly, shorter seizure duration prior to resection can result in improved cognitive outcome, suggesting that surgery for this population should occur sooner to help improve intelligence outcomes.
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Affiliation(s)
| | - Dwight Barry
- Health Informatics, Group Health, Seattle, Washington; and
| | | | - Molly H Warner
- Departments of 1 Neurology.,Psychiatry, Seattle Children's Hospital
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Abstract
PURPOSE To investigate language development after functional hemispherotomy and to evaluate prognostic factors for (un-)favourable outcomes. METHODS Children and adolescents who had vertical perithalamic hemispherotomy at the Medical University Wien (MUW) paediatric epilepsy centre were identified from a prospectively maintained database. Inclusion criteria were: complete clinical, neurophysiological and neuropsychological data, seizure freedom and a minimum follow-up of 12 months after surgery. The language quotients (LQ) prior to surgery and at last follow-up were calculated for each child. In addition, associations between pre- to post-surgical changes in LQ and the following variables were examined: age at epilepsy-onset, age at surgery and duration of epilepsy prior to surgery, aetiology, side of surgery, interictal EEG including sleep organization before and 12 months after surgery and antiepileptic-drug (AED) withdrawal state at last follow-up. Analyses were carried out in SPSS version 20.0 (SPSS Inc., Chicago, IL, USA). Nonparametric Wilcoxon and chi-square tests were applied, as required. RESULTS Data from 28 children (14 female) were analyzed. The median age at epilepsy surgery was 64.5 months. The median follow-up after surgery was 3.0 years (±2.6 years, range 12 months to 12 years). Significant gains in LQs at last follow-up were found in 31% of the children (p=0.008). Short disease duration prior to surgery, acquired pathology, lack of epileptiform EEG discharges in the contralateral hemisphere and/or normalization of EEG sleep patterns after surgery, and successful AED withdrawal were linked to favourable language outcomes. CONCLUSION Successful and early hemispherotomy results in improvement of language function in the intact hemisphere.
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Griessenauer CJ, Salam S, Hendrix P, Patel DM, Tubbs RS, Blount JP, Winkler PA. Hemispherectomy for treatment of refractory epilepsy in the pediatric age group: a systematic review. J Neurosurg Pediatr 2015; 15:34-44. [PMID: 25380174 DOI: 10.3171/2014.10.peds14155] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT Evidence in support of hemispherectomy stems from a multitude of retrospective studies illustrating individual institutions' experience. A systematic review of this topic, however, is lacking in the literature. METHODS A systematic review of hemispherectomy for the treatment of refractory epilepsy available up to October 2013 was performed using the following inclusion criteria: reports of a total of 10 or more patients in the pediatric age group (≤ 20 years) undergoing hemispherectomy, seizure outcome reported after a minimum follow-up of 1 year after the initial procedure, and description of the type of hemispherectomy. Only the most recent paper from institutions that published multiple papers with overlapping study periods was included. Two reviewers independently applied the inclusion criteria and extracted all the data. RESULTS Twenty-nine studies with a total of 1161 patients met the inclusion criteria. Seizure outcome was available for 1102 patients, and the overall rate of seizure freedom at the last follow-up was 73.4%. Sixteen studies (55.2%) exclusively reported seizure outcomes of a single type of hemispherectomy. There was no statistically significant difference in seizure outcome and type of hemispherectomy (p = 0.737). Underlying etiology was reported for 85.4% of patients with documented seizure outcome, and the overall distribution of acquired, developmental, and progressive etiologies was 30.5%, 40.7%, and 28.8%, respectively. Acquired and progressive etiologies were associated with significantly higher seizure-free rates than developmental etiologies (p < 0.001). Twenty of the 29 studies (69%) reported complications. The overall rate of hydrocephalus requiring CSF diversion was 14%. Mortality within 30 days was 2.2% and was not statistically different between types of hemispherectomy (p = 0.787). CONCLUSIONS Hemispherectomy is highly effective for treating refractory epilepsy in the pediatric age group, particularly for acquired and progressive etiologies. While the type of hemispherectomy does not have any influence on seizure outcome, hemispherotomy procedures are associated with a more favorable complication profile.
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Affiliation(s)
- Christoph J Griessenauer
- Division of Pediatric Neurosurgery, Department of Neurosurgery, University of Alabama at Birmingham, Alabama
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Lew SM, Koop JI, Mueller WM, Matthews AE, Mallonee JC. Fifty consecutive hemispherectomies: outcomes, evolution of technique, complications, and lessons learned. Neurosurgery 2014; 74:182-94; discussion 195. [PMID: 24176954 DOI: 10.1227/neu.0000000000000241] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Techniques for achieving hemispheric disconnection in patients with epilepsy continue to evolve. OBJECTIVE To review the outcomes of the first 50 hemispherectomy surgeries performed by a single surgeon with an emphasis on outcomes, complications, and how these results led to changes in practice. METHODS The first 50 hemispherectomy cases performed by the lead author were identified from a prospectively maintained database. Patient demographics, surgical details, clinical outcomes, and complications were critically reviewed. RESULTS From 2004 to 2012, 50 patients underwent hemispherectomy surgery (mean follow-up time, 3.5 years). Modified lateral hemispherotomy became the preferred technique and was performed on 44 patients. Forty patients (80%) achieved complete seizure freedom (Engel I). Presurgical and postsurgical neuropsychological evaluations demonstrated cognitive stability. Two cases were performed for palliation only. Previous hemispherectomy surgery was associated with worsened seizure outcome (2 of 6 seizure free; P .005). The use of Avitene was associated with a higher incidence of postoperative hydrocephalus (56% vs 18%; P = .03). In modified lateral hemispherotomy patients without the use of Avitene, the incidence of hydrocephalus was 13%. Complications included infection (n = 3), incomplete disconnection requiring reoperation (n = 1), reversible ischemic neurological deficit (n = 1), and craniosynostosis (n = 1). There were no (unanticipated) permanent neurological deficits or deaths. Minor technique modifications were made in response to specific complications. CONCLUSION The modified lateral hemispherotomy is effective and safe for both initial and revision hemispherectomy surgery. Avitene use appears to result in a greater incidence of postoperative hydrocephalus.
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Affiliation(s)
- Sean M Lew
- *Department of Neurosurgery, and ‡Department of Neurology, Medical College of Wisconsin, Milwaukee, Wisconsin
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Abstract
The term hemispherectomy refers to the complete removal or functional disconnection of a cerebral hemisphere. The technique was initially developed over 85 years ago to treat infiltrating brain tumors but is now used exclusively for medically refractory epilepsy. Hemispherectomy surgery has progressed from an extremely morbid procedure fraught with complications to a fairly routine one performed at most pediatric epilepsy centers with relatively low risk and great efficacy. The author reviews the history and evolution of hemispherectomy surgery, the relevant pathological conditions, as well as outcomes and complications.
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Affiliation(s)
- Sean M Lew
- Medical College of Wisconsin, Children's Hospital of Wisconsin, Milwaukee, WI 53226, USA
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Fridley J, Reddy G, Curry D, Agadi S. Surgical treatment of pediatric epileptic encephalopathies. EPILEPSY RESEARCH AND TREATMENT 2013; 2013:720841. [PMID: 24288601 PMCID: PMC3833057 DOI: 10.1155/2013/720841] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Revised: 08/31/2013] [Accepted: 09/04/2013] [Indexed: 11/17/2022]
Abstract
Pediatric epileptiform encephalopathies are a group of neurologically devastating disorders related to uncontrolled ictal and interictal epileptic activity, with a poor prognosis. Despite the number of pharmacological options for treatment of epilepsy, many of these patients are drug resistant. For these patients with uncontrolled epilepsy, motor and/or neuropsychological deterioration is common. To prevent these secondary consequences, surgery is often considered as either a curative or a palliative option. Magnetic resonance imaging to look for epileptic lesions that may be surgically treated is an essential part of the workup for these patients. Many surgical procedures for the treatment of epileptiform encephalopathies have been reported in the literature. In this paper the evidence for these procedures for the treatment of pediatric epileptiform encephalopathies is reviewed.
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Affiliation(s)
- J. Fridley
- Department of Neurosurgery, Baylor College of Medicine, 1709 Dryden, Houston, TX 77030, USA
| | - G. Reddy
- Department of Neurosurgery, Baylor College of Medicine, 1709 Dryden, Houston, TX 77030, USA
| | - D. Curry
- Department of Neurosurgery, Baylor College of Medicine, 1709 Dryden, Houston, TX 77030, USA
- Department of Surgery, Section of Pediatric Neurosurgery, Texas Children's Hospital, CCC Suite 1230, 6621 Fannin Street, Houston, TX 77030, USA
| | - S. Agadi
- Department of Neurology, Baylor College of Medicine, 6501 Fannin Street, NB302, Houston, TX 77030, USA
- Department of Pediatrics, Section of Neurology and Developmental Neuroscience, One Baylor Plaza, Houston, TX 77030, USA
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Zhu Z, Cui Y, Zhu X, Song H, Xu H, Yu H, Sun L, Qiu J. Spatial attention can transfer to the contralateral hemisphere in neonatal stroke patients: a case report following hemispherectomy. Neurocase 2013; 19:145-9. [PMID: 22512322 DOI: 10.1080/13554794.2011.654223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Patients suffer hemispatial neglect after stroke. However, whether the function of spatial attention is reorganized to the contralateral brain remains poorly understood. Here we present a case report of neonatal stroke to demonstrate the reorganization of spatial attention in the contralateral hemisphere using a series of tests including star cancellation task, line bisection test, the bells test, letter cancellation test, and drawing tests. The patient underwent right hemispherectomy for treatment of refractory epilepsy and did not have hemispatial neglect after surgery, supporting transfer of function prior to the operation. After analyzing the literature in this field, we proposed that the function of spatial attention may transfer to the contralateral side in childhood. Thus, this study sheds new light on the preserved function of spatial attention in neonatal stroke patients even when hemispherectomy is performed.
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Affiliation(s)
- Zhanpeng Zhu
- Department of Neurology, First Hospital of Jilin University, Changchun 130021, PR China
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Cortex mapping of ipsilateral somatosensory area following anatomical hemispherectomy: a MEG study. Brain Dev 2013; 35:331-9. [PMID: 22770545 DOI: 10.1016/j.braindev.2012.06.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 05/08/2012] [Accepted: 06/13/2012] [Indexed: 11/23/2022]
Abstract
A remarkable preservation of sensorimotor function is observed in patients with refractory epilepsy who were treated by hemispherectomy. Cortical regions in the remaining hemisphere or contralateral subcortical region contribute to the residual sensorimotor function. Somatosensory evoked field (SEF) is used to investigate the residual sensory function in hemispherectomized patients. The SEFs are usually recorded with magnetoencephalography (MEG). The objective is to investigate the ipsilateral cortical regions associated with residual sensory function in hemispherectomized patients using somatosensory evoked field techniques. Six patients with anatomical hemispherectomy were included. Ipsilateral and contralateral sensory functions were assessed by physical examination. Somatosensory evoked fields to electrical stimulation of the bilateral median nerves were recorded by MEG in the hemispherectomized patients and six control subjects. The stimulus intensity was adjusted to the minimum threshold that elicited a thumb twitch. The presumed neuronal source was identified as the equivalent current dipole. Six patients demonstrated different degrees of residual sensory function. Three patients had somatosensory evoked field activation in the ipsilateral cortex upon electrical stimulation of the hemiplegic hand. In these patients the locations of the ipsilateral sensorimotor cortex activation were in the primary somatosensory cortex (SI). The latency of the reliable somatosensory evoked field after stimulation of the median nerve was significantly longer for responses from the hemiplegic side compared with responses to stimulation of the median nerve from the normal side. In conclusion, ipsilateral sensory function has a time-locked relation to the cortical electromagnetic activation in the SI area of hemispherectomized patients.
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Villarejo-Ortega F, García-Fernández M, Fournier-Del Castillo C, Fabregate-Fuente M, Álvarez-Linera J, De Prada-Vicente I, Budke M, Ruiz-Falcó ML, Pérez-Jiménez MÁ. Seizure and developmental outcomes after hemispherectomy in children and adolescents with intractable epilepsy. Childs Nerv Syst 2013; 29:475-88. [PMID: 23114926 DOI: 10.1007/s00381-012-1949-8] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Accepted: 10/16/2012] [Indexed: 11/30/2022]
Abstract
PURPOSE The aim of this study is to describe a series of pediatric hemispherectomies, reviewing pathologic substrate, epilepsy characteristics and seizure outcome as well as developmental profiles, before and after surgery, in different domains. METHODS Seventeen patients with full pre-surgical work-up, minimum follow-up of 12 months, and at least one post-surgical neuropsychological evaluation were selected. Three had Rasmussen encephalitis (RE), five hemispheric malformations of cortical development (MCD), and nine hemispheric vascular lesions. RESULTS At latest follow-up, all patients with RE and 66.7 % of those with vascular lesions are in Engel's class I; in the latter group, pre-surgical independent contralateral EEG discharges statistically correlated with a worse seizure outcome. Patients with MCD showed the worst seizure outcome. Pre-surgical language transfer to the right hemisphere was confirmed in a boy with left RE, operated on at 6 years of age. Patients with MCD and vascular lesions already showed severe global developmental delay before surgery, which persists afterwards. A linear correlation was found between earlier age at surgery and better outcome in personal-social, gross motor, and adaptive domains, in the vascular lesions group. The case with highest cognitive improvement had continuous spike and wave during sleep on pre-surgical EEG. CONCLUSIONS Pathologic substrate was the main factor related with seizure outcome. In children with MCD and vascular lesions, although developmental progression is apparent, significant post-surgical improvements are restricted by the severity of pre-surgical neuropsychological disturbances and a slow maturation. Early surgery assessment is recommended to enhance the possibilities for a better quality of life in terms of seizure control, as well as better autonomy and socialization.
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Outcomes of disconnective surgery in intractable pediatric hemispheric and subhemispheric epilepsy. Int J Pediatr 2012; 2012:527891. [PMID: 22518176 PMCID: PMC3299362 DOI: 10.1155/2012/527891] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2011] [Revised: 11/02/2011] [Accepted: 11/02/2011] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVES To study the outcome of disconnective epilepsy surgery for intractable hemispheric and sub-hemispheric pediatric epilepsy. METHODS A retrospective analysis of the epilepsy surgery database was done in all children (age <18 years) who underwent a peri-insular hemispherotomy (PIH) or a peri-insular posterior quadrantectomy (PIPQ) from April 2000 to March 2011. All patients underwent a detailed pre surgical evaluation. Seizure outcome was assessed by the Engel's classification and cognitive skills by appropriate measures of intelligence that were repeated annually. RESULTS There were 34 patients in all. Epilepsy was due to Rasmussen's encephalitis (RE), Infantile hemiplegia seizure syndrome (IHSS), Hemimegalencephaly (HM), Sturge Weber syndrome (SWS) and due to post encephalitic sequelae (PES). Twenty seven (79.4%) patients underwent PIH and seven (20.6%) underwent PIPQ. The mean follow up was 30.5 months. At the last follow up, 31 (91.1%) were seizure free. The age of seizure onset and etiology of the disease causing epilepsy were predictors of a Class I seizure outcome. CONCLUSIONS There is an excellent seizure outcome following disconnective epilepsy surgery for intractable hemispheric and subhemispheric pediatric epilepsy. An older age of seizure onset, RE, SWS and PES were good predictors of a Class I seizure outcome.
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Follett PL, Vora N, Cross JH. Paediatric intractable epilepsy syndromes: changing concepts in diagnosis and management. Adv Tech Stand Neurosurg 2012; 39:45-60. [PMID: 23250836 DOI: 10.1007/978-3-7091-1360-8_2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Epilepsy surgery for drug-resistant childhood epilepsy is not new. However, brain imaging, surgical and anaesthetic techniques have improved to the extent that they are now as much safer and realistic option than they were in the past. Further, the range of surgical candidates is wide, and previous concepts about likely surgical candidates are now challenged as children with previously thought widespread or apparent multifocal disease are evaluated. Outcomes for seizure freedom range from 40 to 80 % depending on the underlying aetiology and the extent of resection. However, the aims of surgery may include seizure reduction in some and improvement in neurodevelopment and behaviour in others, which are less -predictable. Epilepsy surgery in children is no longer a last resort. Children thought to be likely candidates should be evaluated early in their natural history to optimise outcomes in the long term.
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Hauptman JS, Mathern GW. Epilepsy neurosurgery in children. HANDBOOK OF CLINICAL NEUROLOGY 2012; 108:881-95. [PMID: 22939072 DOI: 10.1016/b978-0-444-52899-5.00034-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
- Jason S Hauptman
- Department of Neurosurgery, University of California, Los Angeles, CA, USA
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31
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D'Argenzio L, Colonnelli MC, Harrison S, Jacques TS, Harkness W, Vargha-Khadem F, Scott RC, Cross JH. Cognitive outcome after extratemporal epilepsy surgery in childhood. Epilepsia 2011; 52:1966-72. [PMID: 22032791 DOI: 10.1111/j.1528-1167.2011.03272.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Luigi D'Argenzio
- Neuroscience Department, UCL Institute of Child Health & Great Ormond Street Hospital NHS Trust, London, United Kingdom. l.d'
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