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De Benedictis A, Pepi C, Herur-Raman A, Barba M, Marasi A, Rossi-Espagnet MC, Napolitano A, Rossi S, Luglietto D, Capelli S, Zanus C, Savioli A, de Palma L, Specchio N, Marras CE. Vertical Parasagittal Hemispherotomy in a Pediatric Case of Epilepsy Due to Rasmussen Encephalitis: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown) 2024:01787389-990000000-01224. [PMID: 38967453 DOI: 10.1227/ons.0000000000001261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Accepted: 05/11/2024] [Indexed: 07/06/2024] Open
Abstract
Hemispherotomy is an effective disconnection technique for the treatment of different forms of drug-resistant epilepsy due to encephalopathies with unilateral hemispheric involvement.1-8 We describe the case of a 6-year-old child affected by Rasmussen encephalitis who underwent right vertical parasagittal hemispherotomy.9 The goal of the procedure was to isolate the basal ganglia region by interrupting the interhemispheric and intrahemispheric white matter connectivity. The main surgical steps include the transcortical approach to the lateral ventricle, the posterior callosotomy, the fimbria-fornix incision, the laterothalamic vertical incision, the anterior callosotomy, the frontobasal disconnection, and the transcaudate lateral incision to the anterior temporal horn.7,10 At 10-month follow-up, the patient was seizure free with a stable left hemiparesis. The antiepileptic therapy was progressively interrupted. The video describes the main surgical steps, using both intraoperative videos and advanced three-dimensional modeling of neuroimaging pictures. Patient' parents consented to the procedure. The participants and any identifiable individuals consented to publication of his/her image. Approval from the ethics committee was acquired.
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Affiliation(s)
| | - Chiara Pepi
- Epilepsy and Movement Disorders Unit, Bambino Gesù Children's Hospital, IRCCS, European Reference Network EpiCARE, Rome, Italy
| | - Aalap Herur-Raman
- George Washington University School of Medicine and Health Sciences, Washington, District of Columbia, USA
| | - Matteo Barba
- Neurosurgery Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Alessandra Marasi
- Functional and Interventional Neuroradiology Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | | | - Antonio Napolitano
- Medical Physics Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Sabrina Rossi
- Pathology Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Davide Luglietto
- Neurosurgery Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
- Department of Electrical Engineering and Information Technology (DIETI), Federico II University, Naples, Italy
| | - Sergio Capelli
- Division of Neurosurgery, Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
- Division of Neurosurgery, Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
| | - Caterina Zanus
- Institute for Maternal and Child Health - IRCCS "Burlo Garofolo", Trieste, Italy
| | - Alessandra Savioli
- Intensive Care Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Luca de Palma
- Epilepsy and Movement Disorders Unit, Bambino Gesù Children's Hospital, IRCCS, European Reference Network EpiCARE, Rome, Italy
| | - Nicola Specchio
- Epilepsy and Movement Disorders Unit, Bambino Gesù Children's Hospital, IRCCS, European Reference Network EpiCARE, Rome, Italy
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Macdonald-Laurs E, Dzau W, Warren AEL, Coleman M, Mignone C, Stephenson SEM, Howell KB. Identification and treatment of surgically-remediable causes of infantile epileptic spasms syndrome. Expert Rev Neurother 2024; 24:661-680. [PMID: 38814860 DOI: 10.1080/14737175.2024.2360117] [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: 04/01/2024] [Accepted: 05/22/2024] [Indexed: 06/01/2024]
Abstract
INTRODUCTION Infantile epileptic spasms syndrome (IESS) is a common developmental and epileptic encephalopathy with poor long-term outcomes. A substantial proportion of patients with IESS have a potentially surgically remediable etiology. Despite this, epilepsy surgery is underutilized in this patient group. Some surgically remediable etiologies, such as focal cortical dysplasia and malformation of cortical development with oligodendroglial hyperplasia in epilepsy (MOGHE), are under-diagnosed in infants and young children. Even when a surgically remediable etiology is recognised, for example, tuberous sclerosis or focal encephalomalacia, epilepsy surgery may be delayed or not considered due to diffuse EEG changes, unclear surgical boundaries, or concerns about operating in this age group. AREAS COVERED In this review, the authors discuss the common surgically remediable etiologies of IESS, their clinical and EEG features, and the imaging techniques that can aid in their diagnosis. They then describe the surgical approaches used in this patient group, and the beneficial impact that early epilepsy surgery can have on developing brain networks. EXPERT OPINION Epilepsy surgery remains underutilized even when a potentially surgically remediable cause is recognized. Overcoming the barriers that result in under-recognition of surgical candidates and underutilization of epilepsy surgery in IESS will improve long-term seizure and developmental outcomes.
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Affiliation(s)
- Emma Macdonald-Laurs
- Department of Neurology, The Royal Children's Hospital, Parkville, VIC, Australia
- Neurosciences Group, Murdoch Children's Research Institute, Parkville, VIC, Australia
- Department of Paediatrics, The University of Melbourne, Melbourne, VIC, Australia
| | - Winston Dzau
- Neurosciences Group, Murdoch Children's Research Institute, Parkville, VIC, Australia
- Department of Paediatrics, The University of Melbourne, Melbourne, VIC, Australia
| | - Aaron E L Warren
- Department of Medicine (Austin Health), The University of Melbourne, Melbourne, VIC, Australia
- Brigham and Women's Hospital, Harvard Medical School, Massachusetts, USA
| | - Matthew Coleman
- Neurosciences Group, Murdoch Children's Research Institute, Parkville, VIC, Australia
- Department of Paediatrics, The University of Melbourne, Melbourne, VIC, Australia
| | - Cristina Mignone
- Department of Medical Imaging, The Royal Children's Hospital, Parkville, VIC, Australia
| | - Sarah E M Stephenson
- Neurosciences Group, Murdoch Children's Research Institute, Parkville, VIC, Australia
- Department of Paediatrics, The University of Melbourne, Melbourne, VIC, Australia
| | - Katherine B Howell
- Department of Neurology, The Royal Children's Hospital, Parkville, VIC, Australia
- Neurosciences Group, Murdoch Children's Research Institute, Parkville, VIC, Australia
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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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Cicutti SE, Cuello JF, Villamil F, Gromadzyn GP, Bartuluchi M. Surgical Anatomy and Technique of Peri-Insular Hemispherotomy in Pediatric Epilepsy. Oper Neurosurg (Hagerstown) 2024:01787389-990000000-01138. [PMID: 38651858 DOI: 10.1227/ons.0000000000001161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 02/28/2024] [Indexed: 04/25/2024] Open
Abstract
BACKGROUND AND OBJECTIVES Hemispherotomy is a highly complex procedure that demands a steep learning curve. An incomplete brain disconnection often results in failure of seizure control. The purpose of this article was to present a step-by-step guide to the surgical anatomy of this procedure. It is composed of a 7-stage approach, enhancing access to and improving visualization of deep structures. METHODS A retrospective analysis of 39 pediatric patients with refractory epilepsy who underwent this technique was conducted. Engel scores were assessed 1 year postsurgery. Cadaveric dissections were performed to illustrate the procedure. RESULTS Between 2015 and 2022, 39 patients were surgically treated using the peri-insular technique. The technique involved 7 stages: patient positioning, operative approach, opercular resection, transventricular callosotomy, fronto-orbital disconnection, anterior temporal disconnection, and posterior temporal disconnection. Most of the patients (92.30%) were seizure-free (Engel class I) at 1 year postoperative, 5.13% were nearly seizure-free (Engel II), and 2.56% showed significant improvement (Engel III). Complications occurred in 8% of cases, including 1 infection, 2 cases of aseptic meningitis, and 1 non-shunt-requiring acute hydrocephalus. CONCLUSION The peri-insular hemispherotomy technique offers excellent seizure control with a low complication rate. Our visual documentation of surgical anatomy, complemented by detailed descriptions of surgical nuances, significantly contributes to a comprehensive understanding of this technique.
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Affiliation(s)
- Santiago E Cicutti
- Neurosurgery Department, Juan P. Garrahan Hospital, Buenos Aires, Argentina
| | - Javier F Cuello
- Neurosurgery Department, Hospital Provincial Petrona V. de Cordero, San Fernando, Buenos Aires, Argentina
| | | | - Guido P Gromadzyn
- Neurosurgery Department, Juan P. Garrahan Hospital, Buenos Aires, Argentina
| | - Marcelo Bartuluchi
- Neurosurgery Department, Juan P. Garrahan Hospital, Buenos Aires, Argentina
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Schijns OE. Functional hemispheric disconnection procedures for chronic epilepsy: history, indications, techniques, complications and current practice in Europe. A consensus statement on behalf of the EANS functional neurosurgery section. BRAIN & SPINE 2024; 4:102754. [PMID: 38510638 PMCID: PMC10951757 DOI: 10.1016/j.bas.2024.102754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 01/08/2024] [Accepted: 01/21/2024] [Indexed: 03/22/2024]
Abstract
Introduction The surgical procedure for severe, drug-resistant, unilateral hemispheric epilepsy is challenging. Over the last decades the surgical landscape for hemispheric disconnection procedures changed from anatomical hemispherectomy to functional hemispherotomy with a reduction of complications and stable good seizure outcome. Here, a task force of European epilepsy surgeons prepared, on behalf of the EANS Section for Functional Neurosurgery, a consensus statement on different aspects of the hemispheric disconnection procedure. Research question To determine history, indication, timing, techniques, complications and current practice in Europe for hemispheric disconnection procedures in drug-resistant epilepsy. Material and methods Relevant literature on the topic was collected by a literature search based on the PRISMA 2020 guidelines. Results A comprehensive overview on the historical development of hemispheric disconnection procedures for epilepsy is presented, while discussing indications, timing, surgical techniques and complications. Current practice for this procedure in European epilepsy surgery centers is provided. At present, our knowledge of long-term seizure outcomes primarily stems from open surgical disconnection procedures. Although minimal invasive surgical techniques in epilepsy are rapidly developing and reported in case reports or small case series, long-term seizure outcome remain uncertain and needs to be reported. Discussion and conclusion This is the first paper presenting a European consensus statement regarding history, indications, techniques and complications of hemispheric disconnection procedures for different causes of chronic, drug-resistant epilepsy. Furthermore, it serves as the pioneering document to report a comprehensive overview of the current surgical practices regarding this type of surgery employed in renowned epilepsy surgery centers across Europe.
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Affiliation(s)
- Olaf E.M.G. Schijns
- Corresponding author. Department of Neurosurgery, Maastricht University Medical Center, Maastricht, the Netherlands.
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6
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Wang Y, Wang R, Liu Q, Liu T, Yu H, Liu C, Sun Y, Liu X, Cai L. Disconnection Surgery in Pediatric Epilepsy: A Single Center's Experience With 185 Cases. Neurosurgery 2023; 93:1251-1258. [PMID: 37335113 DOI: 10.1227/neu.0000000000002566] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 04/24/2023] [Indexed: 06/21/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Lobar and multilobar disconnections have gradually become common surgical methods in pediatric epilepsy surgery in recent years. However, the surgical procedures, postoperative epilepsy outcomes, and complications reported by each center are quite different. To review and analyze the clinical data from lobar disconnection in treating intractable pediatric epilepsy and study the characteristics, surgical outcomes, and safety of different disconnection surgeries. METHODS This was a retrospective analysis of 185 children with intractable epilepsy who underwent various lobar disconnections at the Pediatric Epilepsy Center, Peking University First Hospital. Clinical information was grouped according to their characteristics. The differences in the abovementioned characteristics among the different lobar disconnections were summarized, and risk factors affecting the surgical outcome and postsurgical complications were explored. RESULTS Among the 185 patients, 149 patients (80.5%) achieved seizure freedom with a follow-up of 2.1 years. There were 145 patients (78.4%) with malformations of cortical development (MCD). The seizure onset time (median 6 months, P = .001) and surgery time (median 34 months, P = .000) of the MCD group were smaller. Differences were found in etiology, resection of the insular lobe and epilepsy outcome among different disconnection approaches. Both parieto-occipital disconnection ( P = .038, odds ratio = 8.126) and MRI abnormalities larger than the disconnection extent ( P = .030, odds ratio = 2.670) affected the epilepsy outcome. Early postoperative complications were observed in 43 patients (23.3%), and long-term postoperative complications were observed in 5 patients (2.7%). CONCLUSION The most common etiology of epilepsy in children undergoing lobar disconnection is MCD, whose onset and operative ages are the youngest. Disconnection surgery obtained good seizure outcomes in the treatment of pediatric epilepsy with a low incidence of long-term complications. With advances in presurgical evaluation, disconnection surgery will play a more important role in young children with intractable epilepsy.
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Affiliation(s)
- Yao Wang
- Pediatric Epilepsy Center, Peking University First Hospital, Beijing , China
| | - Ruofan Wang
- Department of Pediatrics, Peking University First Hospital, Beijing , China
| | - Qingzhu Liu
- Pediatric Epilepsy Center, Peking University First Hospital, Beijing , China
| | - Tong Liu
- Pediatric Epilepsy Center, Peking University First Hospital, Beijing , China
| | - Hao Yu
- Pediatric Epilepsy Center, Peking University First Hospital, Beijing , China
| | - Chang Liu
- Pediatric Epilepsy Center, Peking University First Hospital, Beijing , China
| | - Yu Sun
- Pediatric Epilepsy Center, Peking University First Hospital, Beijing , China
| | - Xiaoyan Liu
- Pediatric Epilepsy Center, Peking University First Hospital, Beijing , China
- Department of Pediatrics, Peking University First Hospital, Beijing , China
| | - Lixin Cai
- Pediatric Epilepsy Center, Peking University First Hospital, Beijing , China
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Olivero G, Roggeri A, Pittaluga A. Anti-NMDA and Anti-AMPA Receptor Antibodies in Central Disorders: Preclinical Approaches to Assess Their Pathological Role and Translatability to Clinic. Int J Mol Sci 2023; 24:14905. [PMID: 37834353 PMCID: PMC10573896 DOI: 10.3390/ijms241914905] [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: 09/08/2023] [Revised: 09/30/2023] [Accepted: 10/03/2023] [Indexed: 10/15/2023] Open
Abstract
Autoantibodies against NMDA and AMPA receptors have been identified in the central nervous system of patients suffering from brain disorders characterized by neurological and psychiatric symptoms. It has been demonstrated that these autoantibodies can affect the functions and/or the expression of the targeted receptors, altering synaptic communication. The importance to clarify, in preclinical models, the molecular mechanisms involved in the autoantibody-mediated effects has emerged in order to understand their pathogenic role in central disorders, but also to propose new therapeutic approaches for preventing the deleterious central consequences. In this review, we describe some of the available preclinical literature concerning the impact of antibodies recognizing NMDA and AMPA receptors in neurons. This review discusses the cellular events that would support the detrimental roles of the autoantibodies, also illustrating some contrasting findings that in our opinion deserve attention and further investigations before translating the preclinical observations to clinic.
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Affiliation(s)
- Guendalina Olivero
- Department of Pharmacy (DiFar), University of Genoa, Viale Cembrano 4, 16148 Genoa, Italy; (G.O.); (A.R.)
| | - Alessandra Roggeri
- Department of Pharmacy (DiFar), University of Genoa, Viale Cembrano 4, 16148 Genoa, Italy; (G.O.); (A.R.)
| | - Anna Pittaluga
- Center of Excellence for Biomedical Research, 3Rs Center, Department of Pharmacy (DiFar), University of Genoa, Viale Cembrano 4, 16148 Genoa, Italy
- IRCCS Ospedale Policlinico San Martino, Largo Rosanna Benzi 10, 16145 Genoa, Italy
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Karagianni MD, Brotis AG, Tasiou A, Delev D, von Lehe M, Schijns OE, Fountas KN. Hemispherotomy Revised: A complication overview and a systematic review meta-analysis. BRAIN & SPINE 2023; 3:101766. [PMID: 38021002 PMCID: PMC10668062 DOI: 10.1016/j.bas.2023.101766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 06/05/2023] [Accepted: 06/12/2023] [Indexed: 12/01/2023]
Abstract
Introduction Hemispherectomy/hemispherotomy has been employed in the management of catastrophic epilepsy. However, initial reports on the associated mortality and morbidity raised several concerns regarding the technique's safety. Their actual, current incidence needs to be systematically examined to redefine hemispherotomy's exact role. Research question Our current study examined their incidence and evaluated the association of the various hemispherotomy surgical techniques with the reported complications. Material & methods A PRISMA-compliant systematic review and meta-analysis was performed. We searched PubMed, Scopus, and Web of Science until December 2022. Fixed- and random-effects models were employed. Egger's regression test was used for estimating the publication bias, while subgroup analysis was utilized for defining the role of the different hemispherotomy techniques. Results We retrieved a total of 37 studies. The overall procedure mortality was 5%, with a reported mortality of 7% for hemispherectomy and 3% for hemispherotomy. The reported mortality has decreased over the last 30 years from 32% to 2%. Among the observed post-operative complications aseptic meningitis and/or fever occurred in 33%. Hydrocephalus requiring a shunt insertion occurred in 16%. Hematoma evacuation was necessary in 8%, while subgaleal effusion in another 8%. Infections occurred in 11%. A novel post-operative cranial nerve deficit occurred in 11%, while blood transfusion was necessary in 28% of the cases. Discussion and conclusion Our current analysis demonstrated that the evolution from hemispherectomy to hemispherotomy along with neuroanesthesia advances, had a tremendous impact on the associated mortality and morbidity. Hemispherotomy constitutes a safe surgical procedure in the management of catastrophic epilepsies.
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Affiliation(s)
- Maria D. Karagianni
- Department of Neurosurgery, General University Hospital of Larissa, Mezourlo, Larissa, 41110, Greece
| | - Alexandros G. Brotis
- Department of Neurosurgery, General University Hospital of Larissa, Mezourlo, Larissa, 41110, Greece
| | - Anastasia Tasiou
- Department of Neurosurgery, General University Hospital of Larissa, Mezourlo, Larissa, 41110, Greece
| | - Daniel Delev
- Department of Neurosurgery, Faculty of Medicine, RWTH Aachen University, Aachen, Germany
- Neurosurgical Artificial Intelligence Laboratory Aachen (NAILA), RWTH Aachen University Hospital, Aachen, Germany
- Center for Integrated Oncology, Universities Aachen, Bonn, Cologne, Duesseldorf (CIO ABCD), Germany
| | - Marec von Lehe
- Department of Neurosurgery, Brandenburg Medical School, University Hospital Ruppin Brandenburg, Fehrbelliner Str. 38, Neuruppin, Germany
| | - Olaf E.M.G. Schijns
- Department of Neurosurgery, Maastricht University Medical Center, Maatricht, the Netherlands
- Academic Center for Epileptology, Maastricht, Kempenhaeghe, the Netherlands
- School for Mental Health and Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, the Netherlands
| | - Konstantinos N. Fountas
- Department of Neurosurgery, General University Hospital of Larissa, Mezourlo, Larissa, 41110, Greece
- Faculty of Medicine, University of Thessaly, Biopolis, Larissa, 41110, Greece
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Mendoza-Elias N, Satzer D, Henry J, Nordli DR, Warnke PC. Tailored Hemispherotomy Using Tractography-Guided Laser Interstitial Thermal Therapy. Oper Neurosurg (Hagerstown) 2023; 24:e407-e413. [PMID: 36807222 DOI: 10.1227/ons.0000000000000650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 12/06/2022] [Indexed: 02/22/2023] Open
Abstract
BACKGROUND Medically refractory hemispheric epilepsy is a devastating disease with significant lifetime costs and social burden. Functional hemispherotomy is a highly effective treatment for hemispheric epilepsy but is associated with significant complication rates. Percutaneous hemispherotomy through laser interstitial thermal therapy (LITT) based on morphological MRI has been recently described in a single patient but not replicated in the literature. OBJECTIVE To describe the first 2 cases of tractography-guided interstitial laser hemispherotomy and their short-term outcomes. METHODS Two 11-year-old male patients with medically refractory epilepsy secondary to perinatal large vessel infarcts were referred for hemispherotomy. Both patients underwent multitrajectory LITT to disconnect the remaining pathological hemisphere, using tractography to define targets and assess structural outcomes. RESULTS Both cases had minor complication of small intraventricular/subarachnoid hemorrhage not requiring additional intervention. Both patients remain seizure-free at all follow-up visits. CONCLUSION LITT hemispherotomy can produce seizure freedom with short hospitalization and recovery. Tractography allows surgical planning to be tailored according to individual patient anatomy, which often is distorted in perinatal stroke. Minimally invasive procedures offer the greatest potential for seizure freedom without the risks of an open hemispherotomy.
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Affiliation(s)
- Nasya Mendoza-Elias
- Department of Neurological Surgery, University of Chicago, Chicago, Illinois, USA
| | - David Satzer
- Department of Neurological Surgery, University of Chicago, Chicago, Illinois, USA
| | - Julia Henry
- Department of Pediatrics, University of Chicago, Chicago, Illinois, USA
| | - Douglas R Nordli
- Department of Pediatrics, University of Chicago, Chicago, Illinois, USA
| | - Peter C Warnke
- Department of Neurological Surgery, University of Chicago, Chicago, Illinois, USA
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De Benedictis A, Marasi A, Rossi-Espagnet MC, Napolitano A, Parrillo C, Fracassi D, Baldassari G, Borro L, Bua A, de Palma L, Luisi C, Pepi C, Savioli A, Luglietto D, Marras CE. Vertical Hemispherotomy: Contribution of Advanced Three-Dimensional Modeling for Presurgical Planning and Training. J Clin Med 2023; 12:jcm12113779. [PMID: 37297974 DOI: 10.3390/jcm12113779] [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: 03/11/2023] [Revised: 04/22/2023] [Accepted: 04/22/2023] [Indexed: 06/12/2023] Open
Abstract
Vertical hemispherotomy is an effective treatment for many drug-resistant encephalopathies with unilateral involvement. One of the main factors influencing positive surgical results and long-term seizure freedom is the quality of disconnection. For this reason, perfect anatomical awareness is mandatory during each step of the procedure. Although previous groups attempted to reproduce the surgical anatomy through schematic representations, cadaveric dissections, and intraoperative photographs and videos, a comprehensive understanding of the approach may still be difficult, especially for less experienced neurosurgeons. In this work, we reported the application of advanced technology for three-dimensional (3D) modeling and visualization of the main neurova-scular structures during vertical hemispherotomy procedures. In the first part of the study, we built a detailed 3D model of the main structures and landmarks involved during each disconnection phase. In the second part, we discussed the adjunctive value of augmented reality systems for the management of the most challenging etiologies, such as hemimegalencephaly and post-ischemic encephalopathy. We demonstrated the contribution of advanced 3D modeling and visualization to enhance the quality of anatomical representation and interaction between the operator and model according to a surgical perspective, optimizing the quality of presurgical planning, intraoperative orientation, and educational training.
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Affiliation(s)
- Alessandro De Benedictis
- Neurosurgery Unit, Bambino Gesù Children's Hospital, IRCCS, 4, Piazza S. Onofrio, 00165 Rome, Italy
| | - Alessandra Marasi
- Neurosurgery Unit, Bambino Gesù Children's Hospital, IRCCS, 4, Piazza S. Onofrio, 00165 Rome, Italy
| | | | - Antonio Napolitano
- Medical Physics Unit, Bambino Gesù Children's Hospital, IRCCS, 4, Piazza S. Onofrio, 00165 Rome, Italy
| | - Chiara Parrillo
- Medical Physics Unit, Bambino Gesù Children's Hospital, IRCCS, 4, Piazza S. Onofrio, 00165 Rome, Italy
| | - Donatella Fracassi
- Medical Physics Unit, Bambino Gesù Children's Hospital, IRCCS, 4, Piazza S. Onofrio, 00165 Rome, Italy
| | - Giulia Baldassari
- Medical Physics Unit, Bambino Gesù Children's Hospital, IRCCS, 4, Piazza S. Onofrio, 00165 Rome, Italy
| | - Luca Borro
- Multimodal Imaging Unit, Bambino Gesù Children's Hospital, IRCCS, 4, Piazza S. Onofrio, 00165 Rome, Italy
| | - Antonella Bua
- Neurosurgery Unit, Bambino Gesù Children's Hospital, IRCCS, 4, Piazza S. Onofrio, 00165 Rome, Italy
| | - Luca de Palma
- Clinical and Experimental Neurology, Bambino Gesù Children's Hospital, IRCCS, 4, Piazza S. Onofrio, 00165 Rome, Italy
| | - Concetta Luisi
- Clinical and Experimental Neurology, Bambino Gesù Children's Hospital, IRCCS, 4, Piazza S. Onofrio, 00165 Rome, Italy
| | - Chiara Pepi
- Clinical and Experimental Neurology, Bambino Gesù Children's Hospital, IRCCS, 4, Piazza S. Onofrio, 00165 Rome, Italy
| | - Alessandra Savioli
- Intensive Care Unit, Bambino Gesù Children's Hospital, IRCCS, 4, Piazza S. Onofrio, 00165 Rome, Italy
| | - Davide Luglietto
- Neurosurgery Unit, Bambino Gesù Children's Hospital, IRCCS, 4, Piazza S. Onofrio, 00165 Rome, Italy
| | - Carlo E Marras
- Neurosurgery Unit, Bambino Gesù Children's Hospital, IRCCS, 4, Piazza S. Onofrio, 00165 Rome, Italy
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11
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Baltus C, El M’Kaddem B, Ferrao Santos S, Ribeiro Vaz JG, Raftopoulos C. Second surgery after vertical paramedian hemispherotomy for epilepsy recurrence. Heliyon 2023; 9:e14326. [PMID: 36950565 PMCID: PMC10025104 DOI: 10.1016/j.heliyon.2023.e14326] [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: 05/18/2022] [Revised: 02/02/2023] [Accepted: 03/01/2023] [Indexed: 03/13/2023] Open
Abstract
Background Vertical Paramedian Hemispherotomy (VPH) is considered an effective surgical treatment for drug-resistant epilepsy with 80% of patients experiencing seizure freedom or worthwhile improvement. Identifying persistent connective tracts is challenging in failed VPH. Methods We reviewed our series of consecutive patients undergoing VPH for hemispheric drug-resistant epilepsy and included cases with recurrent epileptic seizures undergoing second surgery with at least 6 months of postoperative follow-up. The cases were extensively assessed to propose a targeted complementary resection. Results Two children suffering from seizure recurrence following hemispherotomy leading to second surgery were included. After complete assessment, persisting amygdala residue was suspected responsible for the epilepsy recurrence in both patients. Complementary resection of the amygdala residue led to seizure freedom for both patients (Engel IA/ILAE Class 1) without complication. Different diagnostic tools are used to assess patients after failed hemispherotomy including routine EEG, prolonged video EEG, MRI (particularly DTI sequences), SPECT or PET scans and clinical evaluation. These tools allow to rule out epileptic foci in the contralateral hemisphere and to localize a potentially persisting epileptogenic zone. Assessment of these patients should be as systematic and integrated as the initial workup. Although our two patients suffered from Rasmussen's encephalitis, seizure recurrence after VPH has been described in other pathologies. Conclusion Lying deep and medially in the surgical corridor of VPH, the amygdala can be incompletely resected and cause recurrent epilepsy. Complementary selective resection of the amygdala residue may safely lead to success in epilepsy control.
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Affiliation(s)
- Cedric Baltus
- Department of Neurosurgery, University Hospital St-Luc, Université Catholique de Louvain, Av. Hippocrate 10, 1200, Brussels, Belgium
| | - Bouchra El M’Kaddem
- Department of Pediatric Neurology, University Hospital St-Luc, Université Catholique de Louvain, Av. Hippocrate 10, 1200, Brussels, Belgium
| | - Susana Ferrao Santos
- Refractory Epilepsy Center, University Hospital St-Luc, Université Catholique de Louvain, Av. Hippocrate 10, 1200, Brussels, Belgium
| | - José Géraldo Ribeiro Vaz
- Department of Neurosurgery, University Hospital St-Luc, Université Catholique de Louvain, Av. Hippocrate 10, 1200, Brussels, Belgium
| | - Christian Raftopoulos
- Department of Neurosurgery, University Hospital St-Luc, Université Catholique de Louvain, Av. Hippocrate 10, 1200, Brussels, Belgium
- Corresponding author.
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12
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Pepi C, De Benedictis A, Rossi-Espagnet MC, Cappelletti S, Da Rold M, Falcicchio G, Vigevano F, Marras CE, Specchio N, De Palma L. Hemispherotomy in Infants with Hemimegalencephaly: Long-Term Seizure and Developmental Outcome in Early Treated Patients. Brain Sci 2022; 13:brainsci13010073. [PMID: 36672056 PMCID: PMC9856354 DOI: 10.3390/brainsci13010073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/21/2022] [Accepted: 12/26/2022] [Indexed: 01/01/2023] Open
Abstract
Hemimegalencephaly (HME) is a rare brain congenital malformation, consisting in altered neuronal migration and proliferation within one hemisphere, which is responsible for early onset drug-resistant epilepsy. Hemispherotomy is an effective treatment option for patients with HME and drug-resistant epilepsy. Surgical outcome may be variable among different surgical series, and the long-term neuropsychological trajectory has been rarely defined using a standardized neurocognitive test. We report the epileptological and neuropsychological long-term outcomes of four consecutive HME patients, operated on before the age of three years. All patients were seizure-free and drug-free, and the minimum follow-up duration was of five years. Despite the excellent post-surgical seizure outcome, the long-term developmental outcome is quite variable between patients, ranging from mild to severe intellectual disabilities. Patients showed improvement mainly in communication skills, while visuo-perceptive and coordination abilities were more impaired. Epileptological outcome seems to be improved in early treated patients; however, neuropsychological outcome in HME patients may be highly variable despite early surgery.
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Affiliation(s)
- Chiara Pepi
- Rare and Complex Epilepsies Unit, Department of Neuroscience, Bambino Gesù Children’s Hospital, IRCCS, Full Member of European Reference Network EpiCARE, 00165 Rome, Italy
| | | | | | - Simona Cappelletti
- Unit of Clinical Psychology, Department of Neuroscience, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy
| | - Martina Da Rold
- Scientific Institute, IRCCS “E. Medea”, Association “La Nostra Famiglia”, 31015 Conegliano, Italy
| | - Giovanni Falcicchio
- Department of Basic Medical Sciences, Neurosciences and Sense Organs—University of Bari Aldo Moro, 70121 Bari, Italy
| | - Federico Vigevano
- Rare and Complex Epilepsies Unit, Department of Neuroscience, Bambino Gesù Children’s Hospital, IRCCS, Full Member of European Reference Network EpiCARE, 00165 Rome, Italy
| | - Carlo Efisio Marras
- Neurosurgery Unit, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy
| | - Nicola Specchio
- Rare and Complex Epilepsies Unit, Department of Neuroscience, Bambino Gesù Children’s Hospital, IRCCS, Full Member of European Reference Network EpiCARE, 00165 Rome, Italy
- Correspondence: ; Tel.: +39-06-68592645; Fax: +39-06-68592463
| | - Luca De Palma
- Rare and Complex Epilepsies Unit, Department of Neuroscience, Bambino Gesù Children’s Hospital, IRCCS, Full Member of European Reference Network EpiCARE, 00165 Rome, Italy
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13
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Can Presurgical Interhemispheric EEG Connectivity Predict Outcome in Hemispheric Surgery? A Brain Machine Learning Approach. Brain Sci 2022; 13:brainsci13010071. [PMID: 36672052 PMCID: PMC9856795 DOI: 10.3390/brainsci13010071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/21/2022] [Accepted: 12/27/2022] [Indexed: 12/31/2022] Open
Abstract
OBJECTIVES Hemispherotomy (HT) is a surgical option for treatment of drug-resistant seizures due to hemispheric structural lesions. Factors affecting seizure outcome have not been fully clarified. In our study, we used a brain Machine Learning (ML) approach to evaluate the possible role of Inter-hemispheric EEG Connectivity (IC) in predicting post-surgical seizure outcome. METHODS We collected 21 pediatric patients with drug-resistant epilepsy; who underwent HT in our center from 2009 to 2020; with a follow-up of at least two years. We selected 5-s windows of wakefulness and sleep pre-surgical EEG and we trained Artificial Neuronal Network (ANN) to estimate epilepsy outcome. We extracted EEG features as input data and selected the ANN with best accuracy. RESULTS Among 21 patients, 15 (71%) were seizure and drug-free at last follow-up. ANN showed 73.3% of accuracy, with 85% of seizure free and 40% of non-seizure free patients appropriately classified. CONCLUSIONS The accuracy level that we reached supports the hypothesis that pre-surgical EEG features may have the potential to predict epilepsy outcome after HT. SIGNIFICANCE The role of pre-surgical EEG data in influencing seizure outcome after HT is still debated. We proposed a computational predictive model, with an ML approach, with a high accuracy level.
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14
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Doniselli FM, Deleo F, Criscuolo S, Stabile A, Pastori C, Di Giacomo R, Didato G, Chiapparini L, Villani F. MRI in Late-Onset Rasmussen Encephalitis: A Long-Term Follow-Up Study. Diagnostics (Basel) 2022; 12:diagnostics12020502. [PMID: 35204592 PMCID: PMC8871246 DOI: 10.3390/diagnostics12020502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 02/09/2022] [Accepted: 02/11/2022] [Indexed: 11/23/2022] Open
Abstract
Late-onset Rasmussen encephalitis (LoRE) is a rare unihemispheric progressive inflammatory disorder causing neurological deficits and epilepsy. The long-term radiological evolution has never been fully described. We retrospectively analyzed the MR images of 13 LoRE patients from a total of 136 studies, and searched for focal areas of volume loss or signal intensity abnormality in grey matter or white matter. Each subject had a median of nine MRI studies (IQR 7–13). Frontal and temporal lobes were the most affected regions (13/13 and 8/13, respectively) and showed the greatest worsening over time in terms of atrophic changes (9/13 and 5/8, respectively). A milder cortical atrophy was found in the insular and parietal lobes. The caudate nucleus was affected in seven patients. Hyperintensities of grey matter and white matter on T2-WI and FLAIR images were observed in all patients, and transiently in eight patients. In two cases out of the latter patients, these transient alterations evolved into atrophy of the same region. Disease duration was significantly associated with signal abnormalities in the grey matter at last follow-up. LoRE MRI alterations are milder, and their progression is markedly slower compared to radiological findings described in the childhood form.
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Affiliation(s)
- Fabio Martino Doniselli
- Neuroradiology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via Celoria 11, 20133 Milan, Italy; (F.M.D.); (L.C.)
- Department of Biomedical Sciences for Health, University of Milan, Via Mangiagalli 31, 20122 Milan, Italy
| | - Francesco Deleo
- Epilepsy Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via Celoria 11, 20133 Milan, Italy; (A.S.); (C.P.); (R.D.G.); (G.D.)
- Correspondence: ; Tel.: +39-02-23942242
| | - Stefania Criscuolo
- Postgraduational School of Radiodiagnostics, University of Milan, Via Festa del Perdono 7, 20122 Milan, Italy;
| | - Andrea Stabile
- Epilepsy Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via Celoria 11, 20133 Milan, Italy; (A.S.); (C.P.); (R.D.G.); (G.D.)
| | - Chiara Pastori
- Epilepsy Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via Celoria 11, 20133 Milan, Italy; (A.S.); (C.P.); (R.D.G.); (G.D.)
| | - Roberta Di Giacomo
- Epilepsy Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via Celoria 11, 20133 Milan, Italy; (A.S.); (C.P.); (R.D.G.); (G.D.)
| | - Giuseppe Didato
- Epilepsy Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via Celoria 11, 20133 Milan, Italy; (A.S.); (C.P.); (R.D.G.); (G.D.)
| | - Luisa Chiapparini
- Neuroradiology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via Celoria 11, 20133 Milan, Italy; (F.M.D.); (L.C.)
| | - Flavio Villani
- Division of Clinical Neurophysiology and Epilepsy Center, IRCCS Ospedale Policlinico San Martino, Largo R. Benzi 10, 16132 Genoa, Italy;
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15
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Cossu M, Nichelatti M, De Benedictis A, Rizzi M. Lateral versus vertical hemispheric disconnection for epilepsy: a systematic review and meta-analysis. J Neurosurg 2021:1-11. [PMID: 34653979 DOI: 10.3171/2021.5.jns21949] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 05/18/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Lateral periinsular hemispherotomy (LPH) and vertical parasagittal hemispherotomy (VPH) are the most popular disconnective techniques for intractable epilepsies associated with unilateral hemispheric pathologies. The authors aimed to investigate possible differences in seizure outcome and complication rates between patients who underwent LPH and VPH. METHODS A comprehensive literature search of PubMed and Embase identified English-language articles published from database inception to December 2019 that reported series (minimum 12 patients with follow-up ≥ 12 months) on either LPH or VPH. Pooled rates of seizure freedom and complications (with a particular focus on hydrocephalus) were analyzed using meta-analysis to calculate both fixed and random effects. Heterogeneity (Cochran's Q test) and inconsistency (fraction of Q due to actual heterogeneity) were also calculated. RESULTS Twenty-five studies were included. Data from 825 patients were available for seizure outcome analysis (583 underwent LPH and 242 underwent VPH), and data from 692 patients were available for complication analysis (453 underwent LPH and 239 underwent VPH). No differences were found in the pooled rates of Engel class I seizure outcome between patients who underwent LPH (80.02% and 79.44% with fixed and random effects, respectively) and VPH (79.89% and 80.69% with fixed and random effects, respectively) (p = 0.953). No differences were observed in the pooled rates of shunted hydrocephalus between patients who underwent LPH (11.34% and 10.63% with fixed and random effects, respectively) and VPH (11.07% and 9.98% with fixed and random effects, respectively) (p = 0.898). Significant heterogeneity and moderate inconsistency were determined for hydrocephalus occurrence in patients who underwent both LPH and VPH. CONCLUSIONS LPH and VPH techniques present similar excellent seizure outcomes, with comparable and acceptable safety profiles.
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Affiliation(s)
- Massimo Cossu
- 1"Claudio Munari" Epilepsy Surgery Centre, Azienda Socio Sanitaria Territoriale Grande Ospedale Metropolitano Niguarda, Milan, Italy
| | - Michele Nichelatti
- 2Service of Biostatistics, Azienda Socio Sanitaria Territoriale Grande Ospedale Metropolitano, Niguarda, Milan, Italy; and
| | - Alessandro De Benedictis
- 3Neurosurgery Unit, Department of Neurosciences, Bambino Gesù Children Hospital IRCCS, Rome, Italy
| | - Michele Rizzi
- 1"Claudio Munari" Epilepsy Surgery Centre, Azienda Socio Sanitaria Territoriale Grande Ospedale Metropolitano Niguarda, Milan, Italy
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16
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Matern TS, DeCarlo R, Ciliberto MA, Singh RK. Palliative Epilepsy Surgery Procedures in Children. Semin Pediatr Neurol 2021; 39:100912. [PMID: 34620461 DOI: 10.1016/j.spen.2021.100912] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 08/10/2021] [Accepted: 08/11/2021] [Indexed: 10/20/2022]
Abstract
Surgical treatment of epilepsy typically focuses on identification of a seizure focus with subsequent resection and/or disconnection to "cure" the patient's epilepsy and achieve seizure freedom. Palliative epilepsy surgery modalities are efficacious in improving seizure frequency, severity, and quality of life. In this paper, we review palliative epilepsy surgical options for children: vagus nerve stimulation, responsive neurostimulation, deep brain stimulation, hemispherotomy, corpus callosotomy, lobectomy and/or lesionectomy and multiple subpial transection. Reoperation after surgical resection should also be considered. If curative resection is not a viable option for seizure freedom, these methods should be considered with equal emphasis and urgency in the treatment of drug-resistant epilepsy.
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Affiliation(s)
| | | | - Michael A Ciliberto
- Department of Pediatrics, Stead Family Children's Hospital/University of Iowa
| | - Rani K Singh
- Department of Pediatrics, Atrium Health System/Levine Children's Hospital.
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17
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Romanowski EF, McNamara N. Surgery for Intractable Epilepsy in Pediatrics, a Systematic Review of Outcomes other than Seizure Freedom. Semin Pediatr Neurol 2021; 39:100928. [PMID: 34620460 DOI: 10.1016/j.spen.2021.100928] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 08/23/2021] [Accepted: 08/27/2021] [Indexed: 11/25/2022]
Abstract
To perform a systematic review evaluating reported outcomes for epilepsy surgery in pediatric patients with pharmacoresistant epilepsy beyond seizure control, including impact on quality of life, behavioral, neurocognitive outcomes as well as complications, and death. We reviewed articles from both EMBASE and MEDLINE/PubMed articles that met formal criteria (patients ≤18 years, those with intractable epilepsy, at least 5 patients in the case series, published in peer-reviewed journal). Each reviewer independently reviewed the articles and those with discrepancies were discussed and consensus was reached. Out of a total of 536 abstracts obtained from EMBASE and MEDLINE/PubMed searches combined with additional cross-referencing, a total of 98 manuscripts ultimately met all inclusion criteria. The manuscripts were divided into 3 outcomes categories: Quality of Life (16), Cognitive Outcomes (60), and Deficits and Complications (50). Several papers fell into more than 1 category. These were separated by surgical types and evaluated. We found that overall reporting in all domains was variable and inconsistent amongst the different studies. This systematic review highlights the lack of completeness in reporting outcomes and complications involving pediatric epilepsy surgery and discordant results. This underscores the importance of multicenter systematic prospective data collection in pediatric patients who undergo pediatric epilepsy surgery.
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Affiliation(s)
| | - Nancy McNamara
- Division of Pediatric Neurology, University of Michigan, Ann Arbor, MI.
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18
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Passamonti C, Mancini F, Cesaroni E, Bonifazi S, Ceravolo MG, Capecci M, Zamponi N, Scerrati M, Ricciuti RA. Deep brain stimulation in patients with long history of drug resistant epilepsy and poor functional status: Outcomes based on the different targets. Clin Neurol Neurosurg 2021; 208:106827. [PMID: 34329812 DOI: 10.1016/j.clineuro.2021.106827] [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: 04/27/2021] [Revised: 06/13/2021] [Accepted: 07/08/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Deep brain stimulation (DBS) is a widely used surgical procedure for the treatment of patients with drug resistant epilepsy (DRE) and several anatomical target have been described. Indications for DBS includes patients with focal, partial seizure and those for which resective or disconnective surgery are contraindicated, such as involvement of eloquent cortex or significant comorbidities. Despite the SANTE trial has clearly indicated the efficacy of DBS of anterior nucleus of the thalamus (ANT), specific indications regarding the best anatomical target and outcome in patients with severe disability are lacking. Here we described our case series of patients underwent DBS of three different target including ANT, centromedian thalamic nucleus (CMN) and subthalamic nucleus (STN). METHOD Six patients with DRE have been treated with DBS of ANT (n = 3), STN (n = 2) and CMN (n = 1). Outcome has been expressed as seizures frequency reduction and patients functional status after surgery with a follow-up of 5-11 years. RESULTS Four out of six patients show no reduction of seizures frequency after DBS implant with one case of increasing atypical absence. Two cases, one ANT and one CMN, show a significant reduction of seizures frequency of 50-60%. No patients improve relative to functional outcome and one showed psychiatric symptoms worsening. CONCLUSIONS For patients with DRE and severe functional disability, DBS may reduce seizure frequency in some cases, but it does not improve functional outcome.
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Affiliation(s)
- C Passamonti
- Unit of Hospital Psychology, Ospedali Riuniti, Ancona, Italy
| | - F Mancini
- Clinic of Neurosurgery, Ospedali Riuniti, Ancona, Italy.
| | - E Cesaroni
- Child and adolescent psychiatry, Ospedale Salesi, Ancona, Italy
| | - S Bonifazi
- Clinic of Neurosurgery, Ospedali Riuniti, Ancona, Italy
| | - M G Ceravolo
- Department of Experimental and Clinical Medicine, "Università Politecnica delle Marche", Ancona, Italy
| | - M Capecci
- Department of Experimental and Clinical Medicine, "Università Politecnica delle Marche", Ancona, Italy
| | - N Zamponi
- Child and adolescent psychiatry, Ospedale Salesi, Ancona, Italy
| | - M Scerrati
- Clinic of Neurosurgery, Ospedali Riuniti, Ancona, Italy
| | - R A Ricciuti
- Unit of Neurosurgery, Ospedale Belcolle, Viterbo, Italy
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19
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Abstract
Hemispherectomy is a unique epilepsy surgery procedure that has undergone significant modification and evolution since Dandy's early description. This procedure is mainly indicated to treat early childhood and infancy medically intractable epilepsy. Various epileptic syndromes have been treated with this procedure, including hemimegalencephaly (HME), Rasmussen's encephalitis, Sturge-Weber syndrome (SWS), perinatal stroke, and hemispheric cortical dysplasia. In terms of seizure reduction, hemispherectomy remains one of the most successful epilepsy surgery procedures. The modification of this procedure over many years has resulted in lower mortality and morbidity rates. HME might increase morbidity and lower the success rate. Future studies should identify the predictors of outcomes based on the pathology and the type of hemispherectomy. Here, based on a literature review, we discuss the evolution of hemispherectomy techniques and their outcomes and complications.
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20
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Kuzan-Fischer CM, Parker WE, Schwartz TH, Hoffman CE. Challenges of Epilepsy Surgery. World Neurosurg 2020; 139:762-774. [PMID: 32689697 DOI: 10.1016/j.wneu.2020.03.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 03/02/2020] [Indexed: 12/22/2022]
Abstract
Though frequently effective in the management of medically refractory seizures, epilepsy surgery presents numerous challenges. Selection of the appropriate candidate patients who are likely to benefit from surgery is critical to achieving seizure freedom and avoiding neurocognitive morbidity. Identifying the seizure focus and mapping epileptogenic networks involves an interdisciplinary team dedicated to formulating a safe and effective surgical plan. Various strategies can be employed either to eliminate the epileptic focus or to modulate network activity, including resection of the focus with open surgery or laser interstitial thermal therapy; modulation of epileptogenic firing patterns with responsive neurostimulation, deep brain stimulation, or vagus nerve stimulation; or non-invasive disconnection of epileptic circuits with focused ultrasound, which is also discussed in greater detail in the subsequent chapter in our series. We review several challenges of epilepsy surgery that must be thoughtfully addressed in order to ensure its success.
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Affiliation(s)
- Claudia M Kuzan-Fischer
- Department of Neurological Surgery, Weill Cornell Medical College, NewYork-Presbyterian Hospital, New York, New York, USA
| | - Whitney E Parker
- Department of Neurological Surgery, Weill Cornell Medical College, NewYork-Presbyterian Hospital, New York, New York, USA
| | - Theodore H Schwartz
- Department of Neurological Surgery, Weill Cornell Medical College, NewYork-Presbyterian Hospital, New York, New York, USA
| | - Caitlin E Hoffman
- Department of Neurological Surgery, Weill Cornell Medical College, NewYork-Presbyterian Hospital, New York, New York, USA.
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21
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Young CC, Williams JR, Feroze AH, McGrath M, Ravanpay AC, Ellenbogen RG, Ojemann JG, Hauptman JS. Pediatric functional hemispherectomy: operative techniques and complication avoidance. Neurosurg Focus 2020; 48:E9. [DOI: 10.3171/2020.1.focus19889] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Accepted: 01/28/2020] [Indexed: 11/06/2022]
Abstract
Functional hemispherectomy/hemispherotomy is a disconnection procedure for severe medically refractory epilepsy where the seizure foci diffusely localize to one hemisphere. It is an improvement on anatomical hemispherectomy and was first performed by Rasmussen in 1974. Less invasive surgical approaches and refinements have been made to improve seizure freedom and minimize surgical morbidity and complications. Key anatomical structures that are disconnected include the 1) internal capsule and corona radiata, 2) mesial temporal structures, 3) insula, 4) corpus callosum, 5) parietooccipital connection, and 6) frontobasal connection. A stepwise approach is indicated to ensure adequate disconnection and prevent seizure persistence or recurrence. In young pediatric patients, careful patient selection and modern surgical techniques have resulted in > 80% seizure freedom and very good functional outcome. In this report, the authors summarize the history of hemispherectomy and its development and present a graphical guide for this anatomically challenging procedure. The use of the osteoplastic flap to improve outcome and the management of hydrocephalus are discussed.
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Affiliation(s)
| | | | | | | | - Ali C. Ravanpay
- 1Department of Neurological Surgery, University of Washington
- 3Department of Neurological Surgery, VA Puget Sound Healthcare System, Seattle, Washington
| | - Richard G. Ellenbogen
- 1Department of Neurological Surgery, University of Washington
- 2Department of Neurological Surgery, Seattle Children’s Hospital; and
| | - Jeffrey G. Ojemann
- 1Department of Neurological Surgery, University of Washington
- 2Department of Neurological Surgery, Seattle Children’s Hospital; and
| | - Jason S. Hauptman
- 1Department of Neurological Surgery, University of Washington
- 2Department of Neurological Surgery, Seattle Children’s Hospital; and
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22
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Arifin MT, Muttaqin Z, Hanaya R, Bakhtiar Y, Bintoro AC, Iida K, Kurisu K, Arita K, Andar EBPS, B HK, Priambada D, Risdianto A, Kusnarto G, Bunyamin J. Hemispherotomy for drug-resistant epilepsy in an Indonesian population. Epilepsy Behav Rep 2019; 12:100337. [PMID: 31828236 PMCID: PMC6888712 DOI: 10.1016/j.ebr.2019.100337] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 09/03/2019] [Accepted: 09/20/2019] [Indexed: 11/29/2022] Open
Abstract
Hemispherotomy is a surgical treatment indicated in patients with drug-resistant epilepsy due to unilateral hemispheric pathology. Hemispherotomy is less invasive compared with hemispherectomy. We reviewed our experience performing 24 hemispherotomy and report the results of 16 patients with prolonged follow-up of this relatively uncommon procedure in two centers in Indonesia. This is a retrospective observational study conducted from 1999 to July 2019 in two epilepsy neurosurgical centers in Semarang, Indonesia. Surgical techniques included vertical parasagittal hemispherotomy (VPH), peri-insular hemispherotomy (PIH), and modified PIH called the Shimizu approach (SA). The postoperative assessment was carried out using the Engel classification system of seizure outcome. Seizure freedom (Engel class I) outcome was achieved in 10 patients (62.5%), class II in 3 patients (18.7%), class III in 2 patients (12.5%), and class IV in 1 patient (6.3%) with follow-up duration spanning from 24 to 160 months. To the best of our knowledge, this series is the most extensive documentation of hemispherotomy in an Indonesian population. We report our experience performing hemispherotomy in selected cases in two centers in Indonesia To the best of our knowledge, this is the largest case series of hemispherotomy for drug-resistant epilepsy in Indonesia. Engel class I outcome was seen in 62.5% for 16 patients of which 81.3% of patients improved regarding reduction in pre-operative seizure frequency
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Affiliation(s)
| | - Zainal Muttaqin
- Department of Neurosurgery, Faculty of Medicine, Diponegoro University, Indonesia
| | - Ryosuke Hanaya
- Department of Neurosurgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Japan
| | - Yuriz Bakhtiar
- Department of Neurosurgery, Faculty of Medicine, Diponegoro University, Indonesia
| | - Aris Catur Bintoro
- Department of Neurology, Faculty of Medicine, Diponegoro University, Indonesia
| | - Koji Iida
- Department of Neurosurgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan
| | - Kaoru Kurisu
- Department of Neurosurgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan
| | - Kazunori Arita
- Department of Neurosurgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Japan
| | - Erie B P S Andar
- Department of Neurosurgery, Faculty of Medicine, Diponegoro University, Indonesia
| | - Happy Kurnia B
- Department of Neurosurgery, Faculty of Medicine, Diponegoro University, Indonesia
| | - Dody Priambada
- Department of Neurosurgery, Faculty of Medicine, Diponegoro University, Indonesia
| | - Ajid Risdianto
- Department of Neurosurgery, Faculty of Medicine, Diponegoro University, Indonesia
| | - Gunadi Kusnarto
- Department of Neurosurgery, Faculty of Medicine, Diponegoro University, Indonesia
| | - Jacob Bunyamin
- Department of Neurosurgery, Faculty of Medicine, Diponegoro University, Indonesia
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23
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Swanson KI, Smith KA, Mirzadeh Z, Ponce FA. Epilepsy, Functional Neurosurgery, and Pain. Oper Neurosurg (Hagerstown) 2019; 17:S209-S228. [PMID: 31099850 DOI: 10.1093/ons/opz075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 02/06/2019] [Indexed: 11/12/2022] Open
Affiliation(s)
- Kyle I Swanson
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona
| | - Kris A Smith
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona
| | - Zaman Mirzadeh
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona
| | - Francisco A Ponce
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona
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Hwang JK, Kim DS. From Resection to Disconnection for Seizure Control in Pediatric Epilepsy Children. J Korean Neurosurg Soc 2019; 62:336-343. [PMID: 31085960 PMCID: PMC6514314 DOI: 10.3340/jkns.2019.0031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 03/21/2019] [Indexed: 11/27/2022] Open
Abstract
Epilepsy surgery revealed dramatically improved seizure outcomes over medical therapy in drug-resistant epilepsy patients. Children with epilepsy, however, have multiple epileptic focuses which require multilobar resection for better seizure outcome. Multilobar resection has not only the several severe surgical complications, such as hydrocephalus and shunt-related craniosynostosis, due to intracranial volume reduction. Isolation method (disconnection surgery) was progressively studied over epileptic focus removal (resective surgery) for seizure control. This concept was first introduced for functional hemispherotomy, and its primary principle is to preserve the vital vascularized brain that is functionally disconnected from the contralateral healthy brain. Currently in most epilepsy centers, the predominant disconnection surgical methods, including functional hemispherotomy, are continually being refined and are showing excellent results. They allow the functional isolation of the hemisphere or multi-lobe, affected by severe epilepsy. This review describes recent findings concerning the indication, surgical technique, seizure outcome and complications in several disconnection surgeries including the functional hemispherotomy for refractory pediatric epilepsy.
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Affiliation(s)
- Jun Kyu Hwang
- Department of Pediatric Neurosurgery, Severance Children's Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Dong-Seok Kim
- Department of Pediatric Neurosurgery, Severance Children's Hospital, Yonsei University College of Medicine, Seoul, Korea
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Outcome after hemispherotomy in patients with intractable epilepsy: Comparison of techniques in the Italian experience. Epilepsy Behav 2019; 93:22-28. [PMID: 30780077 DOI: 10.1016/j.yebeh.2019.01.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 01/03/2019] [Accepted: 01/04/2019] [Indexed: 11/23/2022]
Abstract
OBJECTIVE The objective of the study was to evaluate clinical characteristics and outcome of hemispherotomy in children and adolescents with hemispheric refractory epilepsy in an Italian cohort of patients. METHODS We retrospectively evaluated the clinical course and outcome of 92 patients with refractory epilepsy who underwent hemispherotomy in three Italian epilepsy centers between 2006 and 2016. Three different approaches for hemispherotomy were used: parasagittal, modified parasagittal, and lateral. RESULTS Mean age at epilepsy onset was 1.8 ± 2.51 years, and mean duration of epilepsy prior to surgery was 7.4 ± 5.6 years. Mean age at surgery was 9.2 ± 8.0 years. After a mean follow-up of 2.81 ± 2.4 years, 66 of 90 patients (two lost from follow-up, 73.3%) were seizure-free (Engel class I). The etiology of epilepsy was related to acquired lesions (encephalomalacia or gliosis) in 44 patients (47.8%), congenital malformations (cortical dysplasia, hemimegalencephaly, other cortical malformations) in 38 (41.3%), and progressive conditions (Rasmussen or Sturge-Weber syndrome) in 10 patients (10.9%). Regarding seizure outcome, we could not identify statistically significant differences between vertical and lateral approaches (p = 0.154). Seizure outcome was not statistically different in patients with congenital vs acquired or progressive etiologies (p = 0.43). Acute postoperative seizures (APOS) correlated with poor outcome (p < 0.05). On multivariate analysis, presurgical focal to bilateral tonic-clonic seizures (Odds Ratio (OR) = 3.63, 95% Confidence Interval (CI): 1.86-15.20, p = 0.048) independently predicted seizure recurrence. Twenty-one patients (22.8%) exhibited postoperative complications, with no unexpected and persistent neurological deficit. More than 50% of the patients completely tapered drugs. SIGNIFICANCE Our data confirm hemispherotomy to be a safe and effective procedure in patients with drug resistant epilepsies due to hemispheric lesions. Presurgical focal to bilateral tonic-clonic seizures are the strongest predictor of seizure recurrence after surgery, independently from the type of hemispherotomy.
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Matricardi S, Farello G, Savasta S, Verrotti A. Understanding Childhood Neuroimmune Diseases of the Central Nervous System. Front Pediatr 2019; 7:511. [PMID: 31921724 PMCID: PMC6930888 DOI: 10.3389/fped.2019.00511] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 11/25/2019] [Indexed: 12/18/2022] Open
Abstract
Immune-mediated diseases of the central nervous system (CNS) in childhood are a heterogeneous group of rare conditions sharing the inflammatory involvement of the CNS. This review highlights the growing knowledge of childhood neuroimmune diseases that primarily affect the CNS, outlining the clinical and diagnostic features, the pathobiological mechanisms and genetics, current treatment options, and emerging challenges. The clinical spectrum of these conditions is increasingly expanded, and the underlying mechanisms of dysregulation of the immune system could vary widely. Cell-mediated and antibody-mediated disorders, infection-triggered and paraneoplastic conditions, and genetically defined mechanisms can occur in previously healthy children and can contribute to different stages of the disease. The careful evaluation of the clinical presentation and temporal course of symptoms, the specific neuroimaging and immunological findings, and the exclusion of alternative causes are mandatory in clinical practice for the syndromic diagnosis. A common feature of these conditions is that immunotherapeutic agents could modulate the clinical course and outcomes of the disease. Furthermore, specific symptomatic treatments and comprehensive multidisciplinary care are needed in the overall management. We focus on recent advances on immune-mediated demyelinating CNS disorders, autoimmune encephalitis, interferonopathies, and possible neuroimmune disorders as Rasmussen encephalitis. Better knowledge of these conditions could allow prompt diagnosis and targeted immunotherapy, to decrease morbidity and mortality as well as to improve clinical outcomes, reducing the burden of the disease due to possible long-term neuropsychiatric sequelae. Persisting controversies remain in the rigorous characterization of each specific clinical entity because of the relative rarity in children; moreover, in a large proportion of suspected neuroimmune diseases, the immune "signature" remains unidentified; treatment guidelines are mostly based on retrospective cohort studies and expert opinions; then advances in specific molecular therapies are required. In the future, a better characterization of specific immunological biomarkers may provide a useful understanding of the underlying pathobiological mechanisms of these conditions in order to individualize more tailored therapeutic options and paradigms. Multicenter collaborative research on homogeneous groups of patients who may undergo immunological studies and therapeutic trials could improve the characterization of the underlying mechanisms, the specific phenotypes, and tailored management.
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Affiliation(s)
- Sara Matricardi
- Department of Neuropsychiatry, Children's Hospital "G. Salesi", Ospedali Riuniti Ancona, Ancona, Italy
| | - Giovanni Farello
- Pediatric Clinic, Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Salvatore Savasta
- Department of Pediatrics, Fondazione IRCCS Policlinico San Matteo, University of Pavia, Pavia, Italy
| | - Alberto Verrotti
- Department of Pediatrics, University of L'Aquila, L'Aquila, Italy
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Li Y, Wang Y, Tan Z, Chen Q, Huang W. Longitudinal brain functional and structural connectivity changes after hemispherotomy in two pediatric patients with drug-resistant epilepsy. EPILEPSY & BEHAVIOR CASE REPORTS 2018; 11:58-66. [PMID: 30723671 PMCID: PMC6350230 DOI: 10.1016/j.ebcr.2018.11.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 10/24/2018] [Accepted: 11/20/2018] [Indexed: 11/30/2022]
Abstract
The main focus of the present study was to explore the longitudinal changes in the brain executive control system and default mode network after hemispherotomy. Resting-state functional magnetic resonance imaging and diffusion tensor imaging were collected in two children with drug-resistnt epilepsy underwent hemispherotomy. Two patients with different curative effects showed different trajectories of brain connectivity after surgery. The failed hemispherotomy might be due to the fact that the synchrony of epileptic neurons in both hemispheres is preserved by residual neural pathways. Loss of interhemispheric correlations with increased intrahemispheric correlations can be considered as neural marker for evaluating the success of hemispherotomy.
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Affiliation(s)
- Yongxin Li
- Guangdong Provincial Key Laboratory of Medical Biomechanics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Ya Wang
- Guangdong Provincial Key Laboratory of Medical Biomechanics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Zhen Tan
- Department of Pediatric Neurosurgery, Shenzhen Children's Hospital, Shenzhen, China
| | - Qian Chen
- Department of Pediatric Neurosurgery, Shenzhen Children's Hospital, Shenzhen, China
| | - Wenhua Huang
- Guangdong Provincial Key Laboratory of Medical Biomechanics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
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Neurosurgical approaches to pediatric epilepsy: Indications, techniques, and outcomes of common surgical procedures. Seizure 2018; 77:76-85. [PMID: 30473268 DOI: 10.1016/j.seizure.2018.11.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 11/07/2018] [Accepted: 11/14/2018] [Indexed: 01/01/2023] Open
Abstract
Epilepsy is a common pediatric neurological condition, and approximately one-third of children with epilepsy are refractory to medical management. For these children neurosurgery may be indicated, but operative success is dependent on complete delineation of the epileptogenic zone. In this review, surgical techniques for pediatric epilepsy are considered. First, potentially-curative operations are discussed and broadly divided into resections and disconnections. Then, two palliative approaches to seizure control are reviewed. Finally, future neurosurgical approaches to epilepsy are considered.
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Wagner K, Vaz-Guimaraes F, Camstra K, Lam S. Endoscope-assisted hemispherotomy: translation of technique from cadaveric anatomical feasibility study to clinical implementation. J Neurosurg Pediatr 2018; 23:178-186. [PMID: 30497226 DOI: 10.3171/2018.8.peds18349] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 08/22/2018] [Indexed: 11/06/2022]
Abstract
OBJECTIVEAppropriately chosen candidates with medically refractory epilepsy may benefit from hemispheric disconnection. Traditionally, this involves a large surgical exposure with significant associated morbidity. Minimally invasive approaches using endoscopic assistance have been described by only a few centers. Here, the authors report on the feasibility of endoscope-assisted functional hemispherotomy in a cadaver model and its first translation into clinical practice in appropriately selected patients.METHODSThree silicone-injected, formalin-fixed cadaver heads were used to establish the steps of the procedure in the laboratory. The steps of disconnection were performed using standard surgical instruments and a straight endoscope. The technique was then applied in two patients who had been referred for hemispherectomy and had favorable anatomy for an endoscope-assisted approach.RESULTSAll disconnections were performed in the cadaver model via a 4 × 2-cm paramedian keyhole craniotomy using endoscopic assistance. An additional temporal burr hole approach was marked in case the authors were unable to completely visualize the frontobasal and insular cuts from the paramedian vertical view. Their protocol was subsequently used successfully in two pediatric patients. Full disconnection was verified with postoperative tractography.CONCLUSIONSFull hemispheric disconnection can be accomplished with minimally invasive endoscope-assisted functional hemispherotomy. The procedure is technically feasible and can be safely applied in patients with favorable anatomy and pathology; it may lead to less surgical morbidity and faster recovery.
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Affiliation(s)
- Kathryn Wagner
- 1Department of Neurosurgery, Baylor College of Medicine; and.,2Division of Pediatric Neurosurgery, Texas Children's Hospital, Houston, Texas
| | | | - Kevin Camstra
- 1Department of Neurosurgery, Baylor College of Medicine; and
| | - Sandi Lam
- 1Department of Neurosurgery, Baylor College of Medicine; and.,2Division of Pediatric Neurosurgery, Texas Children's Hospital, Houston, Texas
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Kim JS, Park EK, Shim KW, Kim DS. Hemispherotomy and Functional Hemispherectomy: Indications and Outcomes. J Epilepsy Res 2018; 8:1-5. [PMID: 30090755 PMCID: PMC6066693 DOI: 10.14581/jer.18001] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 03/27/2018] [Indexed: 11/30/2022] Open
Abstract
Hemispherectomy constitutes an established surgical method in the management of patients with medically intractable epilepsy secondary to severe unilateral hemisphere damage. As opposed to focal resections, in hemispherotomies, the entire hemisphere is disconnected from the remaining nervous system, including the functional regions and fibers. Despite this, hemispherotomy is recommended for certain indications, and has good functional and epilepsy outcomes. Here we describe the indications, epilepsy outcomes, and surgical techniques for several hemispheric surgeries.
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Affiliation(s)
- Ju-Seong Kim
- Department of Neurosurgery, Gangnam Severance Hospital, Yonsei University, College of Medicine, Seoul, Korea
| | - Eun-Kyung Park
- Department of Pediatric Neurosurgery, Severance Children's Hospital, Yonsei University, College of Medicine, Seoul, Korea
| | - Kyu-Won Shim
- Department of Pediatric Neurosurgery, Severance Children's Hospital, Yonsei University, College of Medicine, Seoul, Korea
| | - Dong Seok Kim
- Department of Pediatric Neurosurgery, Severance Children's Hospital, Yonsei University, College of Medicine, Seoul, Korea
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Rosazza C, Deleo F, D'Incerti L, Antelmi L, Tringali G, Didato G, Bruzzone MG, Villani F, Ghielmetti F. Tracking the Re-organization of Motor Functions After Disconnective Surgery: A Longitudinal fMRI and DTI Study. Front Neurol 2018; 9:400. [PMID: 29922216 PMCID: PMC5996100 DOI: 10.3389/fneur.2018.00400] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 05/15/2018] [Indexed: 12/03/2022] Open
Abstract
Objective: Mechanisms of motor plasticity are critical to maintain motor functions after cerebral damage. This study explores the mechanisms of motor reorganization occurring before and after surgery in four patients with drug-refractory epilepsy candidate to disconnective surgery. Methods: We studied four patients with early damage, who underwent tailored hemispheric surgery in adulthood, removing the cortical motor areas and disconnecting the corticospinal tract (CST) from the affected hemisphere. Motor functions were assessed clinically, with functional MRI (fMRI) tasks of arm and leg movement and Diffusion Tensor Imaging (DTI) before and after surgery with assessments of up to 3 years. Quantifications of fMRI motor activations and DTI fractional anisotropy (FA) color maps were performed to assess the lateralization of motor network. We hypothesized that lateralization of motor circuits assessed preoperatively with fMRI and DTI was useful to evaluate the motor outcome in these patients. Results: In two cases preoperative DTI-tractography did not reconstruct the CST, and FA-maps were strongly asymmetric. In the other two cases, the affected CST appeared reduced compared to the contralateral one, with modest asymmetry in the FA-maps. fMRI showed different degrees of lateralization of the motor network and the SMA of the intact hemisphere was mostly engaged in all cases. After surgery, patients with a strongly lateralized motor network showed a stable performance. By contrast, a patient with a more bilateral pattern showed worsening of the upper limb function. For all cases, fMRI activations shifted to the intact hemisphere. Structural alterations of motor circuits, observed with FA values, continued beyond 1 year after surgery. Conclusion: In our case series fMRI and DTI could track the longitudinal reorganization of motor functions. In these four patients the more the paretic limbs recruited the intact hemisphere in primary motor and associative areas, the greater the chances were of maintaining elementary motor functions after adult surgery. In particular, DTI-tractography and quantification of FA-maps were useful to assess the lateralization of motor network. In these cases reorganization of motor connectivity continued for long time periods after surgery.
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Affiliation(s)
- Cristina Rosazza
- Neuroradiology Unit, Fondazione IRCCS Istituto Neurologico "Carlo Besta", Milan, Italy.,Scientific Department, Fondazione IRCCS Istituto Neurologico "Carlo Besta", Milan, Italy
| | - Francesco Deleo
- Clinical Epileptology and Experimental Neurophysiology Unit, Fondazione IRCCS Istituto Neurologico "Carlo Besta", Milan, Italy
| | - Ludovico D'Incerti
- Neuroradiology Unit, Fondazione IRCCS Istituto Neurologico "Carlo Besta", Milan, Italy
| | - Luigi Antelmi
- Health Department, Fondazione IRCCS Istituto Neurologico "Carlo Besta", Milan, Italy
| | - Giovanni Tringali
- Neurosurgery Unit, Fondazione IRCCS Istituto Neurologico "Carlo Besta", Milan, Italy
| | - Giuseppe Didato
- Clinical Epileptology and Experimental Neurophysiology Unit, Fondazione IRCCS Istituto Neurologico "Carlo Besta", Milan, Italy
| | - Maria G Bruzzone
- Neuroradiology Unit, Fondazione IRCCS Istituto Neurologico "Carlo Besta", Milan, Italy
| | - Flavio Villani
- Clinical Epileptology and Experimental Neurophysiology Unit, Fondazione IRCCS Istituto Neurologico "Carlo Besta", Milan, Italy
| | - Francesco Ghielmetti
- Health Department, Fondazione IRCCS Istituto Neurologico "Carlo Besta", Milan, Italy
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Vakharia VN, Duncan JS, Witt JA, Elger CE, Staba R, Engel J. Getting the best outcomes from epilepsy surgery. Ann Neurol 2018. [PMID: 29534299 PMCID: PMC5947666 DOI: 10.1002/ana.25205] [Citation(s) in RCA: 139] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Neurosurgery is an underutilized treatment that can potentially cure drug‐refractory epilepsy. Careful, multidisciplinary presurgical evaluation is vital for selecting patients and to ensure optimal outcomes. Advances in neuroimaging have improved diagnosis and guided surgical intervention. Invasive electroencephalography allows the evaluation of complex patients who would otherwise not be candidates for neurosurgery. We review the current state of the assessment and selection of patients and consider established and novel surgical procedures and associated outcome data. We aim to dispel myths that may inhibit physicians from referring and patients from considering neurosurgical intervention for drug‐refractory focal epilepsies. Ann Neurol 2018;83:676–690
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Affiliation(s)
- Vejay N Vakharia
- Department of Clinical and Experimental Epilepsy, UCL Institute of Neurology, London, United Kingdom, and Chalfont Centre for Epilepsy
| | - John S Duncan
- Department of Clinical and Experimental Epilepsy, UCL Institute of Neurology, London, United Kingdom, and Chalfont Centre for Epilepsy
| | - Juri-Alexander Witt
- Department of Epileptology, University of Bonn Medical Center, Bonn, Germany
| | - Christian E Elger
- Department of Epileptology, University of Bonn Medical Center, Bonn, Germany
| | - Richard Staba
- David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA
| | - Jerome Engel
- David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA
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Sheng J, Liu S, Qin H, Li B, Zhang X. Drug-Resistant Epilepsy and Surgery. Curr Neuropharmacol 2018; 16:17-28. [PMID: 28474565 PMCID: PMC5771378 DOI: 10.2174/1570159x15666170504123316] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 06/23/2017] [Accepted: 04/25/2017] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Epilepsy is a chronic brain disease that is caused by various factors and characterized by recurrent, episodic and temporary central nervous system dysfunction which results due to excessive discharge of brain neurons. In the past decades, despite the continuous development of antiepileptic drugs, there are still many patients with epilepsy progressing to drugresistant epilepsy. Currently, surgical treatment is one of important way to cure drug-resistant epilepsy. METHODS Data were collected from Web of Science, Medline, Pubmed, through searching of these keywords: "surgery" and "drug-resistant epilepsy". RESULTS An increasing number of studies have shown that surgery plays an important role in the treatment of drug-resistant epilepsy. Moreover, the comprehensive treatment mainly based on surgery can achieve the remission and even cure of drug-resistant epilepsy. CONCLUSION In this review, we discuss the pathogenesis of drug-resistant epilepsy and the comprehensive treatment mainly based on surgery; this review may provide a reference for the clinical treatment of drug-resistant epilepsy.
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Affiliation(s)
- Jiyao Sheng
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, Second Hospital of Jilin University, Changchun130041, P.R. China
| | - Shui Liu
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, Second Hospital of Jilin University, Changchun130041, P.R. China
| | - Hanjiao Qin
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, Second Hospital of Jilin University, Changchun130041, P.R. China
| | - Bingjin Li
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, Second Hospital of Jilin University, Changchun130041, P.R. China
| | - Xuewen Zhang
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, Second Hospital of Jilin University, Changchun130041, P.R. China
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Functional hemispherectomy is safe and effective in adult patients with epilepsy. Epilepsy Behav 2017; 77:19-25. [PMID: 29073473 DOI: 10.1016/j.yebeh.2017.09.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 09/19/2017] [Accepted: 09/22/2017] [Indexed: 11/22/2022]
Abstract
INTRODUCTION Functional hemispherectomy (FH) is a well-established therapeutic option for children with epilepsy with parenchymal damage confined to one hemisphere, yet its application in adults remains rare. The intention of our study was to investigate postoperative clinical and epileptological outcome in adults who received FH for intractable epilepsy. MATERIALS AND METHODS We retrospectively analyzed 12 adult patients (18-56years) with intractable epilepsy due to unihemispheric pathology. All patients underwent FH. Postoperative neurological and cognitive outcome as well as seizure status were evaluated with a mean follow-up period of 4.9years. RESULTS Ten patients (83%) were seizure-free (Engel I), and two (17%) had recurrent seizures at last follow-up. Apart from one patient requiring operative revision for bone flap infection, no perioperative morbidity or mortality occurred. Postoperative functional assessment revealed deterioration of motor function in 7 patients, whereas 5 remained unchanged. Language was unchanged in 8 patients. The absence of background slowing in preoperative electroencephalogram (EEG) as well as ictal and interictal EEG patterns located ipsilateral to the side of surgery was associated with favorable seizure outcome. CONCLUSION Favorable seizure control and acceptable functional outcome can be achieved by FH in adults with intractable epilepsy. The risk of postoperative deficits is moderate and even older patients are able to manage postoperative motor impairment. Therefore, FH should be considered in case of unihemispheric lesions also in adults.
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Rossi Sebastiano D, Visani E, Duran D, Freri E, Panzica F, Chiapparini L, Ragona F, Granata T, Franceschetti S. Epileptic spikes in Rasmussen's encephalitis: Migratory pattern and short-term evolution. A MEG study. Clin Neurophysiol 2017; 128:1898-1905. [PMID: 28826020 DOI: 10.1016/j.clinph.2017.07.401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 07/12/2017] [Accepted: 07/15/2017] [Indexed: 11/25/2022]
Abstract
OBJECTIVE We aimed this study at identifying cortical areas involved in the generation of interictal spikes in Rasmussen's Encephalitis (RE) patients using magnetoencephalography (MEG), at comparing spike localization with the degree of cortical atrophy detected by MRI, and at identifying short-term changes during the follow-up. METHODS Five patients with RE underwent two MEG and magnetic resonance imaging (MRI) (six months interval). The sources of visually detected spikes were estimated using equivalent current dipoles technique; these were then superimposed on individual MRI and clustered; the locations of the clusters were related to the MRI stage of cortical atrophy. RESULTS All patients showed spikes and clusters located in different cortical areas in both recordings; the locations had a limited correspondence with cortical atrophy. The second recordings showed changes in the localisation of spikes and clusters, and confirmed the dissimilarities with neuroradiological abnormalities. CONCLUSIONS The presence of clusters of spikes of variable localisation suggests that RE progresses in a multifocal and fluctuating manner. The cortical areas most involved in epileptogenesis did not completely coincide with the most atrophic areas. SIGNIFICANCE MEG can contribute to evaluating multifocal hemispheric spikes in RE and to better understand the time course of epileptogenic process.
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Affiliation(s)
| | - Elisa Visani
- Neurophysiopathology Department and Epilepsy Centre, IRCCS Foundation, Milan, Italy
| | - Dunja Duran
- Neurophysiopathology Department and Epilepsy Centre, IRCCS Foundation, Milan, Italy
| | - Elena Freri
- Department of Pediatric Neuroscience, Carlo Besta Neurological Institute, IRCCS Foundation, Milan, Italy
| | - Ferruccio Panzica
- Neurophysiopathology Department and Epilepsy Centre, IRCCS Foundation, Milan, Italy
| | - Luisa Chiapparini
- Neuroradiology Department, Carlo Besta Neurological Institute, IRCCS Foundation, Milan, Italy
| | - Francesca Ragona
- Department of Pediatric Neuroscience, Carlo Besta Neurological Institute, IRCCS Foundation, Milan, Italy
| | - Tiziana Granata
- Department of Pediatric Neuroscience, Carlo Besta Neurological Institute, IRCCS Foundation, Milan, Italy
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Bartoli A, El Hassani Y, Jenny B, Momjian S, Korff CM, Seeck M, Vulliemoz S, Schaller K. What to do in failed hemispherotomy? Our clinical series and review of the literature. Neurosurg Rev 2017; 41:125-132. [DOI: 10.1007/s10143-017-0888-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 07/20/2017] [Accepted: 07/31/2017] [Indexed: 10/19/2022]
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Schusse CM, Smith K, Drees C. Outcomes after hemispherectomy in adult patients with intractable epilepsy: institutional experience and systematic review of the literature. J Neurosurg 2017; 128:853-861. [PMID: 28452614 DOI: 10.3171/2016.9.jns151778] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Hemispherectomy is a surgical technique that is established as a standard treatment in appropriately selected patients with drug-resistant epilepsy. It has proven to be successful in pediatric patients with unilateral hemispheric lesions but is underutilized in adults. This study retrospectively evaluated the clinical outcomes after hemispherectomy in adult patients with refractory epilepsy. METHODS This study examined 6 cases of hemispherectomy in adult patients at Barrow Neurological Institute. In addition, all case series of hemispherectomy in adult patients were identified through a literature review using MEDLINE and PubMed. Case series of patients older than 18 years were included; reports of patients without clear follow-up duration or method of validated seizure outcome quantification were excluded. Seizure outcome was based on the Engel classification. RESULTS A total of 90 cases of adult hemispherectomy were identified, including 6 newly added by Barrow Neurological Institute. Sixty-five patients underwent functional hemispherectomy; 25 patients had anatomical hemispherectomy. Length of follow-up ranged from 9 to 456 months. Seizure freedom was achieved in 80% of patients. The overall morbidity rate was low, with 9 patients (10%) having new or additional postoperative speech or language dysfunction, and 19 patients (21%) reporting some worsening of hemiparesis. No patients lost ambulatory or significant functional ability, and 2 patients had objective ambulatory improvement. Among the 41 patients who underwent additional formal neuropsychological testing postoperatively, overall stability or improvement was seen. CONCLUSIONS Hemispherectomy is a valuable surgical tool for properly selected adult patients with pre-existing hemiparesis and intractable epilepsy. In published cases, as well as in this series, the procedure has overall been well tolerated without significant morbidity, and the majority of patients have been rendered free of seizures.
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Affiliation(s)
| | - Kris Smith
- 2Neurosurgery, Barrow Neurological Institute, Phoenix, Arizona; and
| | - Cornelia Drees
- 3Department of Neurology, University of Colorado, Denver, Colorado
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Sebastianelli L, Versace V, Taylor A, Brigo F, Nothdurfter W, Saltuari L, Trinka E, Nardone R. Functional reorganization after hemispherectomy in humans and animal models: What can we learn about the brain's resilience to extensive unilateral lesions? Brain Res Bull 2017; 131:156-167. [PMID: 28414105 DOI: 10.1016/j.brainresbull.2017.04.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 04/05/2017] [Accepted: 04/11/2017] [Indexed: 01/18/2023]
Abstract
Hemispherectomy (HS) is an effective surgical procedure aimed at managing otherwise intractable epilepsy in cases of diffuse unihemispheric pathologies. Neurological recovery in subjects treated with HS is not limited to seizure reduction, rather, sensory-motor and behavioral improvement is often observed. This outcome highlights the considerable capability of the brain to react to such an extensive lesion, by functionally reorganizing and rewiring the cerebral cortex, especially early in life. In this narrative review, we summarize the animal studies as well as the human neurophysiological and neuroimaging studies dealing with the reorganizational processes that occur after HS. These topics are of particular interest in understanding mechanisms of functional recovery after brain injury. HS offers the chance to investigate contralesional hemisphere activity in controlling ipsilateral limb movements, and the role of transcallosal interactions, before and after the surgical procedure. These post-injury neuroplastic phenomena actually differ from those observed after less extensive brain damage. Therefore, they illustrate how different lesions could lead the contralesional hemisphere to play the "good" or "bad" role in functional recovery. These issues may have clinical implications and could inform rehabilitation strategies aiming to improve functional recovery following unilateral hemispheric lesions. Future studies, involving large cohorts of hemispherectomized patients, will be necessary in order to obtain a greater understanding of how cerebral reorganization can contribute to residual sensorimotor, visual and auditory functions.
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Affiliation(s)
- Luca Sebastianelli
- Department of Neurorehabilitation, Hospital of Vipiteno, Italy, and Research Unit for Neurorehabilitation of South Tyrol, Bolzano, Italy
| | - Viviana Versace
- Department of Neurorehabilitation, Hospital of Vipiteno, Italy, and Research Unit for Neurorehabilitation of South Tyrol, Bolzano, Italy
| | - Alexandra Taylor
- Department of Neurology, Christian Doppler Klinik, Paracelsus Medical University, Salzburg, Austria
| | - Francesco Brigo
- Department of Neurology, Franz Tappeiner Hospital, Merano, Italy; Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - Wolfgang Nothdurfter
- Department of Neurorehabilitation, Hospital of Vipiteno, Italy, and Research Unit for Neurorehabilitation of South Tyrol, Bolzano, Italy
| | - Leopold Saltuari
- Department of Neurorehabilitation, Hospital of Vipiteno, Italy, and Research Unit for Neurorehabilitation of South Tyrol, Bolzano, Italy
| | - Eugen Trinka
- Department of Neurology, Christian Doppler Klinik, Paracelsus Medical University, Salzburg, Austria; Centre of Cognitive Neuroscience, Christian Doppler Klinik, Paracelsus Medical University, Salzburg, Austria
| | - Raffaele Nardone
- Department of Neurology, Christian Doppler Klinik, Paracelsus Medical University, Salzburg, Austria; Department of Neurology, Franz Tappeiner Hospital, Merano, Italy.
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Abstract
Seizures are a common manifestation of autoimmune limbic encephalitis and multifocal paraneoplastic disorders. Accumulating evidence supports an autoimmune basis for seizures in the absence of syndromic manifestations of encephalitis. The autoimmune epilepsies are immunologically mediated disorders in which recurrent seizures are a primary and persistent clinical feature. When other etiologies have been excluded, an autoimmune etiology is suggested in a patient with epilepsy upon detection of neural autoantibodies and/or the presence of inflammatory changes on cerebrospinal fluid (CSF) or magnetic resonance imaging. In such patients, immunotherapy may be highly effective, depending on the particular autoimmune epilepsy syndrome present. In this chapter, several autoimmune epilepsy syndromes are discussed. First, epilepsies secondary to other primary autoimmune disorders will be discussed, and then those associated with antibodies that are likely to be pathogenic, such as voltage-gated potassium channel-complex and N-methyl-d-aspartate receptor, gamma-aminobutyric acid A and B receptor antibodies. For each syndrome, the typical clinical, imaging, electroencephaloram, CSF, and serologic features, and pathophysiology and treatment are described. Finally, suggested guidelines for the recognition, evaluation, and treatment of autoimmune epilepsy syndromes are provided.
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Mameniškienė R, Wolf P. Epilepsia partialis continua: A review. Seizure 2017; 44:74-80. [DOI: 10.1016/j.seizure.2016.10.010] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 10/12/2016] [Accepted: 10/13/2016] [Indexed: 11/24/2022] Open
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Jenny B, Smoll N, El Hassani Y, Momjian S, Pollo C, Korff CM, Seeck M, Schaller K. Pediatric epilepsy surgery: could age be a predictor of outcomes? J Neurosurg Pediatr 2016; 18:235-41. [PMID: 27128787 DOI: 10.3171/2015.10.peds14413] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
OBJECTIVE Like adults, many children suffering from intractable seizures benefit from surgical therapy. Although various reports indicate that early intervention may avoid severe developmental consequences often associated with intractable epilepsy, surgery is still considered a last option for many children. In this retrospective study, the authors aimed to determine whether pediatric epilepsy surgery, in particular during the first years of life, relates to measurable benefits. METHODS Data from 78 patients (age range 5 months to 17 years) who underwent epilepsy surgery at the Geneva and Lausanne University Hospitals between 1997 and 2012 were reviewed retrospectively. Patients were dichotomized into 2 groups: infants (≤ 3 years of age, n = 19), and children/adolescents (4-17 years of age, n = 59). Compared with children/adolescents, infants more often had a diagnosis of dysplasia (37% vs 10%, respectively; p < 0.05, chi-square test). RESULTS The overall seizure-free rate was 76.9%, with 89.5% in infants and 72.9% in the children/adolescents group. Infants were 2.76 times as likely to achieve seizure-free status as children/adolescents. Postoperative antiepileptic medication was reduced in 67.9% of patients. Only 11.4% of the patients were taking more than 2 antiepileptic drugs after surgery, compared with 43% before surgery (p < 0.0001). The overall complication rate was 15.1% (6.4% transient hemiparesis), and no major complications or deaths occurred. CONCLUSIONS The data show a high seizure-free rate in children ≤ 3 years of age, despite a higher occurrence of dysplastic, potentially ill-defined lesions. Pediatric patients undergoing epilepsy surgery can expect a significant reduction in their need for medication. Given the excellent results in the infant group, prospective studies are warranted to determine whether age ≤ 3 years is a predictor for excellent surgical outcome.
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Affiliation(s)
| | | | | | | | - Claudio Pollo
- Department of Neurosurgery, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Christian M Korff
- Child and Adolescents, Pediatric Neurology, University Hospital Geneva, Switzerland; and
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Küpper H, Kudernatsch M, Pieper T, Groeschel S, Tournier JD, Raffelt D, Winkler P, Holthausen H, Staudt M. Predicting hand function after hemidisconnection. Brain 2016; 139:2456-68. [PMID: 27383529 DOI: 10.1093/brain/aww170] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Accepted: 05/31/2016] [Indexed: 12/13/2022] Open
Abstract
Hemidisconnections (i.e. hemispherectomies or hemispherotomies) invariably lead to contralateral hemiparesis. Many patients with a pre-existing hemiparesis, however, experience no deterioration in motor functions, and some can still grasp with their paretic hand after hemidisconnection. The scope of our study was to predict this phenomenon. Hypothesizing that preserved contralateral grasping ability after hemidisconnection can only occur in patients controlling their paretic hands via ipsilateral corticospinal projections already in the preoperative situation, we analysed the asymmetries of the brainstem (by manual magnetic resonance imaging volumetry) and of the structural connectivity of the corticospinal tracts within the brainstem (by magnetic resonance imaging diffusion tractography), assuming that marked hypoplasia or Wallerian degeneration on the lesioned side in patients who can grasp with their paretic hands indicate ipsilateral control. One hundred and two patients who underwent hemidisconnections between 0.8 and 36 years of age were included. Before the operation, contralateral hand function was normal in 3/102 patients, 47/102 patients showed hemiparetic grasping ability and 52/102 patients could not grasp with their paretic hands. After hemidisconnection, 20/102 patients showed a preserved grasping ability, and 5/102 patients began to grasp with their paretic hands only after the operation. All these 25 patients suffered from pre- or perinatal brain lesions. Thirty of 102 patients lost their grasping ability. This group included all seven patients with a post-neonatally acquired or progressive brain lesion who could grasp before the operation, and also all three patients with a preoperatively normal hand function. The remaining 52/102 patients were unable to grasp pre- and postoperatively. On magnetic resonance imaging, the patients with preserved grasping showed significantly more asymmetric brainstem volumes than the patients who lost their grasping ability. Similarly, these patients showed striking asymmetries in the structural connectivity of the corticospinal tracts. In summary, normal preoperative hand function and a post-neonatally acquired or progressive lesion predict a loss of grasping ability after hemidisconnection. A postoperatively preserved grasping ability is possible in hemiparetic patients with pre- or perinatal lesions, and this is highly likely when the brainstem is asymmetric and especially when the structural connectivity of the corticospinal tracts within the brainstem is asymmetric.
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Affiliation(s)
- Hanna Küpper
- 1 Department of Paediatric Neurology and Developmental Medicine, Children's Hospital, University of Tübingen, Germany
| | - Manfred Kudernatsch
- 2 Neurosurgery Clinic and Clinic for Epilepsy Surgery, Schön Klinik Vogtareuth, Germany
| | - Tom Pieper
- 3 Clinic for Neuropaediatrics and Neurorehabilitation, Epilepsy Centre for Children and Adolescents, Schön Klinik, Vogtareuth, Germany
| | - Samuel Groeschel
- 1 Department of Paediatric Neurology and Developmental Medicine, Children's Hospital, University of Tübingen, Germany
| | | | - David Raffelt
- 5 Florey Institute of Neuroscience and Mental Health, Heidelberg, Victoria, Australia
| | - Peter Winkler
- 3 Clinic for Neuropaediatrics and Neurorehabilitation, Epilepsy Centre for Children and Adolescents, Schön Klinik, Vogtareuth, Germany
| | - Hans Holthausen
- 3 Clinic for Neuropaediatrics and Neurorehabilitation, Epilepsy Centre for Children and Adolescents, Schön Klinik, Vogtareuth, Germany
| | - Martin Staudt
- 1 Department of Paediatric Neurology and Developmental Medicine, Children's Hospital, University of Tübingen, Germany 3 Clinic for Neuropaediatrics and Neurorehabilitation, Epilepsy Centre for Children and Adolescents, Schön Klinik, Vogtareuth, Germany
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Cao K, Liu M, Wang C, Liu Q, Yang K, Tao L, Guo X. Five-Year Long-Term Prognosis of Epileptic Children After Hemispheric Surgery: A Systematic Review and Meta-analysis. Medicine (Baltimore) 2016; 95:e3743. [PMID: 27281073 PMCID: PMC4907651 DOI: 10.1097/md.0000000000003743] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 04/13/2016] [Accepted: 04/21/2016] [Indexed: 11/26/2022] Open
Abstract
To estimate children's long-term seizure outcomes after hemispheric surgery and the associated predictors.A systematic review of 4 databases and a meta-analysis were performed from January 1, 1995 to August 31, 2015. The databases included PubMed, Embase, Science Direct, and Web of Science; patients were classified into the Engel Class I group and the Engel Class II to IV group, according to their seizure outcomes. Nine potential predictors were then stratified across the groups and estimated using the Wilcoxon rank-sum test for continuous variables and the Chi-squared test for categorical variables.The search yielded 15 retrospective studies, with a total sample size of 380. Five years after surgery, 268 (0.71, 95% confidence interval [CI]: 0.64-0.78) children were seizure free; the seizure onset age in the Engel Class I group was significantly higher than that of the Engel Class II to IV group (standardized mean difference [SMD] = 0.26, 95% CI: 0.03-0.49, P = 0.028); specifically, when predicting the positive long-term outcomes, the odds ratio for late onset age (≥3.6 months, median value of the Engel Class II-IV group) versus early onset age was 2.65 (95% CI: 1.454-4.836, z = 3.18, P = 0.001). The abnormal magnetic resonance imaging (MRI) findings were more predictive for positive seizure outcomes than the normal findings (odds ratio [OR] = 4.60, 95% CI: 1.27-16.62, P = 0.02).Following hemispheric surgery, the long-term prognosis of children with epilepsy was good. Late seizure onset (age ≥ 3.6 months) and abnormal MRI findings were positive predictors for long-term seizure control in children.
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Affiliation(s)
- Kai Cao
- From the Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University (KC, CW, QL, KY, LT, XG); Beijing Municipal Key Laboratory of Clinical Epidemiology (KC, CW, QL, KY, LT, XG); Beijing Key Laboratory of Environment Toxicology (ML); School of Public Health, Capital Medical University (ML); and Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Science Key Laboratory (KC), Beijing, China
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Abstract
Pediatric epilepsy is a debilitating condition that impacts millions of patients throughout the world. Approximately 20-30% of children with recurrent seizures have drug-resistant epilepsy (DRE). For these patients, surgery offers the possibility of not just seizure freedom but significantly improved neurocognitive and behavioral outcomes. The spectrum of surgical options is vast, ranging from outpatient procedures such as vagus nerve stimulation to radical interventions including hemispherectomy. The thread connecting all of these interventions is a common goal-seizure freedom, an outcome that can be achieved safely and durably in a large proportion of patients. In this review, we discuss many of the most commonly performed surgical interventions and describe the indications, complications, and outcomes specific to each.
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Affiliation(s)
- Jian Guan
- 1 Division of Pediatric Neurosurgery, Department of Neurosurgery, Primary Children's Hospital, University of Utah, Salt Lake City, Utah, USA ; 2 Division of Neurosurgery, University of Vermont, Burlington, Vermont, USA
| | - Michael Karsy
- 1 Division of Pediatric Neurosurgery, Department of Neurosurgery, Primary Children's Hospital, University of Utah, Salt Lake City, Utah, USA ; 2 Division of Neurosurgery, University of Vermont, Burlington, Vermont, USA
| | - Katrina Ducis
- 1 Division of Pediatric Neurosurgery, Department of Neurosurgery, Primary Children's Hospital, University of Utah, Salt Lake City, Utah, USA ; 2 Division of Neurosurgery, University of Vermont, Burlington, Vermont, USA
| | - Robert J Bollo
- 1 Division of Pediatric Neurosurgery, Department of Neurosurgery, Primary Children's Hospital, University of Utah, Salt Lake City, Utah, USA ; 2 Division of Neurosurgery, University of Vermont, Burlington, Vermont, USA
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Hu WH, Zhang C, Zhang K, Shao XQ, Zhang JG. Hemispheric surgery for refractory epilepsy: a systematic review and meta-analysis with emphasis on seizure predictors and outcomes. J Neurosurg 2016; 124:952-61. [DOI: 10.3171/2015.4.jns14438] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT
Conflicting conclusions have been reported regarding several factors that may predict seizure outcomes after hemispheric surgery for refractory epilepsy. The goal of this study was to identify the possible predictors of seizure outcome by pooling the rates of postoperative seizure freedom found in the published literature.
METHODS
A comprehensive literature search of PubMed, Embase, and the Cochrane Library identified English-language articles published since 1970 that describe seizure outcomes in patients who underwent hemispheric surgery for refractory epilepsy. Two reviewers independently assessed article eligibility and extracted the data. The authors pooled rates of seizure freedom from papers included in the study. Eight potential prognostic variables were identified and dichotomized for analyses. The authors also compared continuous variables within seizure-free and seizure-recurrent groups. Random- or fixed-effects models were used in the analyses depending on the presence or absence of heterogeneity.
RESULTS
The pooled seizure-free rate among the 1528 patients (from 56 studies) who underwent hemispheric surgery was 73%. Patients with an epilepsy etiology of developmental disorders, generalized seizures, nonlateralization on electroencephalography, and contralateral MRI abnormalities had reduced odds of being seizure-free after surgery.
CONCLUSIONS
Hemispheric surgery is an effective therapeutic modality for medically intractable epilepsy. This meta-analysis provides useful evidence-based information for the selection of candidates for hemispheric surgery, presurgical counseling, and explanation of seizure outcomes.
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Affiliation(s)
| | | | | | - Xiao-Qiu Shao
- 3Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Jian-Guo Zhang
- 1Beijing Neurosurgical Institute and
- Departments of 2Neurosurgery and
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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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Pinto ALR, Lohani S, Bergin AMR, Bourgeois BFD, Black PM, Prabhu SP, Madsen JR, Takeoka M, Poduri A. Surgery for intractable epilepsy due to unilateral brain disease: a retrospective study comparing hemispherectomy techniques. Pediatr Neurol 2014; 51:336-43. [PMID: 25160539 DOI: 10.1016/j.pediatrneurol.2014.05.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 05/14/2014] [Accepted: 05/17/2014] [Indexed: 11/25/2022]
Abstract
BACKGROUND Hemispherectomy is a surgical procedure used to treat medically intractable epilepsy in children with severe unilateral cortical disease secondary to acquired brain or congenital lesions. The major surgical approaches for hemispherectomy are anatomic hemispherectomy, traditional functional hemispherectomy, and peri-insular hemispherotomy. We describe the epilepsy outcome, including the need for reoperation, after hemispherectomy in patients with brain malformations or acquired brain lesions who underwent hemispherectomy for refractory epilepsy. METHODS We conducted a retrospective observational study at Children's Hospital Boston. Cases were ascertained from a research database of patients who underwent epilepsy surgery from 1997 to 2011. Data were obtained from electronic medical records and office charts. Outcome after surgery was defined as improvement in seizures (quantity and severity) represented by the Engel classification score measured at last follow-up, with a minimum of 12 months of follow-up. The need for reoperation for completion of hemispheric disconnection. We also examined whether placement of ventriculoperitoneal shunt was required after hemispherectomy was a secondary outcome. RESULTS We identified 36 patients who underwent hemispherectomy for severe, medically intractable epilepsy. Group 1 (n = 14) had static acquired lesions, and group 2 (n = 22) had malformations of cortical development. Mean age at surgery for group 1 was 9 years (S.D. 5.5) and 2.77 years for group 2 (S.D. 4.01; P < 0.001). The seizure outcome was good in both groups (Engel score I for 25, II for three, III for six, and IV for two patients) and did not differ between the two groups. In group 1, five patients underwent anatomic hemispherectomy (one had prior focal resection), four underwent functional hemispherectomy, and five underwent peri-insular hemispherotomy; none required a second procedure. In group 2, a total of 14 patients had anatomic hemispherectomy (of these, three had had limited prior focal resection), five had functional hemispherectomy, and three had peri-insular hemispherotomy. Among the patients in group 2 who had had functional hemispherectomy, one required reoperation to complete the disconnection and one required peri-insular hemispherotomy because of persistent seizures. In group 1, three patients underwent a ventriculoperitoneal shunt, and from these patients two underwent anatomic hemispherectomy and one had functional hemispherectomy. In group 2, 12 patients had ventriculoperitoneal shunt, and all of them had anatomic hemispherectomy as a first or second procedure. CONCLUSION Seizure outcome after hemispherectomy is good in patients with acquired lesions and with developmental malformations. Although the seizure outcome was similar in the three procedures, the complication rate was higher with anatomic hemispherectomy than with the more recent functional hemispherectomy and peri-insular hemispherotomy. The group with cortical malformations generally had surgery at a younger age; two patients with malformations of cortical development who underwent functional hemispherectomy required second surgeries. The need for reoperation in these cases may reflect the anatomic complexity of developmental hemispheric malformations, which may lead to incomplete disconnection.
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Affiliation(s)
- Anna L R Pinto
- Division of Epilepsy and Clinical Neurophysiology, Boston Children's Hospital, Boston, Massachusetts
| | - Subash Lohani
- Department of Neurosurgery, Boston Children's Hospital, Boston, Massachusetts
| | - Ann M R Bergin
- Division of Epilepsy and Clinical Neurophysiology, Boston Children's Hospital, Boston, Massachusetts
| | - Blaise F D Bourgeois
- Division of Epilepsy and Clinical Neurophysiology, Boston Children's Hospital, Boston, Massachusetts
| | - Peter M Black
- Department of Neurosurgery, Boston Children's Hospital, Boston, Massachusetts
| | - Sanjay P Prabhu
- Department of Radiology, Boston Children's Hospital, Boston, Massachusetts
| | - Joseph R Madsen
- Department of Neurosurgery, Boston Children's Hospital, Boston, Massachusetts
| | - Masanori Takeoka
- Division of Epilepsy and Clinical Neurophysiology, Boston Children's Hospital, Boston, Massachusetts
| | - Annapurna Poduri
- Division of Epilepsy and Clinical Neurophysiology, Boston Children's Hospital, Boston, Massachusetts.
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Amrom D, Kinay D, Hart Y, Berkovic SF, Laxer K, Andermann F, Andermann E, Bar-Or A. Rasmussen encephalitis and comorbid autoimmune diseases: A window into disease mechanism? Neurology 2014; 83:1049-55. [PMID: 25142901 DOI: 10.1212/wnl.0000000000000791] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVE To describe a potential association between comorbid autoimmune disease and Rasmussen encephalitis (RE) and discuss potential insights into underlying RE pathogenesis. METHODS We report a case series of 4 patients with RE in whom a comorbid autoimmune disease was subsequently diagnosed and review the literature on possible common susceptibility factors. RESULTS In 4 patients who presented with typical clinical features of RE, a comorbid autoimmune disease was subsequently diagnosed: Hashimoto thyroiditis, ulcerative colitis, Crohn disease, and systemic lupus erythematosus. We discuss the possible common predisposing factors. CONCLUSIONS The association of RE, a rare entity, with a comorbid autoimmune disease raises the possibility of shared mechanisms of susceptibility, including common immunogenetic and/or environmental risk factors.
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Affiliation(s)
- Dina Amrom
- From the Neurogenetics Unit (D.A., E.A.), Epilepsy Clinic (F.A.), and Neuroimmunology Unit (A.B.-O.), Montreal Neurological Hospital and Institute, Quebec, Canada; Departments of Neurology & Neurosurgery (D.A., F.A., E.A., A.B.-O.), Pediatrics (F.A.), and Human Genetics (E.A.), McGill University, Montreal, Quebec, Canada; Okmeydani Education and Research Hospital (D.K.), Istanbul, Turkey; Royal Victoria Infirmary (Y.H.), Newcastle-upon-Tyne, UK; Epilepsy Research Center (S.F.B.), Department of Medicine (Neurology), University of Melbourne, Australia; and Department of Neurology (K.L.), University of California at San Francisco.
| | - Demet Kinay
- From the Neurogenetics Unit (D.A., E.A.), Epilepsy Clinic (F.A.), and Neuroimmunology Unit (A.B.-O.), Montreal Neurological Hospital and Institute, Quebec, Canada; Departments of Neurology & Neurosurgery (D.A., F.A., E.A., A.B.-O.), Pediatrics (F.A.), and Human Genetics (E.A.), McGill University, Montreal, Quebec, Canada; Okmeydani Education and Research Hospital (D.K.), Istanbul, Turkey; Royal Victoria Infirmary (Y.H.), Newcastle-upon-Tyne, UK; Epilepsy Research Center (S.F.B.), Department of Medicine (Neurology), University of Melbourne, Australia; and Department of Neurology (K.L.), University of California at San Francisco
| | - Yvonne Hart
- From the Neurogenetics Unit (D.A., E.A.), Epilepsy Clinic (F.A.), and Neuroimmunology Unit (A.B.-O.), Montreal Neurological Hospital and Institute, Quebec, Canada; Departments of Neurology & Neurosurgery (D.A., F.A., E.A., A.B.-O.), Pediatrics (F.A.), and Human Genetics (E.A.), McGill University, Montreal, Quebec, Canada; Okmeydani Education and Research Hospital (D.K.), Istanbul, Turkey; Royal Victoria Infirmary (Y.H.), Newcastle-upon-Tyne, UK; Epilepsy Research Center (S.F.B.), Department of Medicine (Neurology), University of Melbourne, Australia; and Department of Neurology (K.L.), University of California at San Francisco
| | - Samuel F Berkovic
- From the Neurogenetics Unit (D.A., E.A.), Epilepsy Clinic (F.A.), and Neuroimmunology Unit (A.B.-O.), Montreal Neurological Hospital and Institute, Quebec, Canada; Departments of Neurology & Neurosurgery (D.A., F.A., E.A., A.B.-O.), Pediatrics (F.A.), and Human Genetics (E.A.), McGill University, Montreal, Quebec, Canada; Okmeydani Education and Research Hospital (D.K.), Istanbul, Turkey; Royal Victoria Infirmary (Y.H.), Newcastle-upon-Tyne, UK; Epilepsy Research Center (S.F.B.), Department of Medicine (Neurology), University of Melbourne, Australia; and Department of Neurology (K.L.), University of California at San Francisco
| | - Ken Laxer
- From the Neurogenetics Unit (D.A., E.A.), Epilepsy Clinic (F.A.), and Neuroimmunology Unit (A.B.-O.), Montreal Neurological Hospital and Institute, Quebec, Canada; Departments of Neurology & Neurosurgery (D.A., F.A., E.A., A.B.-O.), Pediatrics (F.A.), and Human Genetics (E.A.), McGill University, Montreal, Quebec, Canada; Okmeydani Education and Research Hospital (D.K.), Istanbul, Turkey; Royal Victoria Infirmary (Y.H.), Newcastle-upon-Tyne, UK; Epilepsy Research Center (S.F.B.), Department of Medicine (Neurology), University of Melbourne, Australia; and Department of Neurology (K.L.), University of California at San Francisco
| | - Frederick Andermann
- From the Neurogenetics Unit (D.A., E.A.), Epilepsy Clinic (F.A.), and Neuroimmunology Unit (A.B.-O.), Montreal Neurological Hospital and Institute, Quebec, Canada; Departments of Neurology & Neurosurgery (D.A., F.A., E.A., A.B.-O.), Pediatrics (F.A.), and Human Genetics (E.A.), McGill University, Montreal, Quebec, Canada; Okmeydani Education and Research Hospital (D.K.), Istanbul, Turkey; Royal Victoria Infirmary (Y.H.), Newcastle-upon-Tyne, UK; Epilepsy Research Center (S.F.B.), Department of Medicine (Neurology), University of Melbourne, Australia; and Department of Neurology (K.L.), University of California at San Francisco
| | - Eva Andermann
- From the Neurogenetics Unit (D.A., E.A.), Epilepsy Clinic (F.A.), and Neuroimmunology Unit (A.B.-O.), Montreal Neurological Hospital and Institute, Quebec, Canada; Departments of Neurology & Neurosurgery (D.A., F.A., E.A., A.B.-O.), Pediatrics (F.A.), and Human Genetics (E.A.), McGill University, Montreal, Quebec, Canada; Okmeydani Education and Research Hospital (D.K.), Istanbul, Turkey; Royal Victoria Infirmary (Y.H.), Newcastle-upon-Tyne, UK; Epilepsy Research Center (S.F.B.), Department of Medicine (Neurology), University of Melbourne, Australia; and Department of Neurology (K.L.), University of California at San Francisco
| | - Amit Bar-Or
- From the Neurogenetics Unit (D.A., E.A.), Epilepsy Clinic (F.A.), and Neuroimmunology Unit (A.B.-O.), Montreal Neurological Hospital and Institute, Quebec, Canada; Departments of Neurology & Neurosurgery (D.A., F.A., E.A., A.B.-O.), Pediatrics (F.A.), and Human Genetics (E.A.), McGill University, Montreal, Quebec, Canada; Okmeydani Education and Research Hospital (D.K.), Istanbul, Turkey; Royal Victoria Infirmary (Y.H.), Newcastle-upon-Tyne, UK; Epilepsy Research Center (S.F.B.), Department of Medicine (Neurology), University of Melbourne, Australia; and Department of Neurology (K.L.), University of California at San Francisco.
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49
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Granata T, Matricardi S, Ragona F, Freri E, Casazza M, Villani F, Deleo F, Tringali G, Gobbi G, Tassi L, Lo Russo G, Marras CE, Specchio N, Vigevano F, Fusco L. Hemispherotomy in Rasmussen encephalitis: long-term outcome in an Italian series of 16 patients. Epilepsy Res 2014; 108:1106-19. [PMID: 24815913 DOI: 10.1016/j.eplepsyres.2014.03.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2013] [Revised: 03/13/2014] [Accepted: 03/24/2014] [Indexed: 10/25/2022]
Abstract
Surgical disconnection of the affected hemisphere is considered the treatment of choice for Rasmussen encephalitis (RE), however few data on long-term outcomes after disconnective surgery are available. We report on long-term seizure, cognitive and motor outcomes after disconnective surgery in 16 (8 M, 8 F) RE patients. Pre- and post-operative evaluations included long-term video-EEG monitoring, MRI, assessment of motor function, and cognitive evaluation. Hemispherotomy, by various techniques was used to obtain functional disconnection of the affected hemisphere. The patients, of median current age 23.5 years, range 12-33, were operated on between 1993 and 2009. Median age at disease onset was 5.8 years (range 3-11.4). Median time from seizure onset to surgery was 3.8 years, range 8 months to 21 years. Post-surgical follow-up was a median of 9.5 years, range 3-20. At surgery all patients were receiving two or more antiepileptic drugs (AEDs). All but three patients were seizure-free at latest follow-up. AEDs had been stopped in ten patients; in the remaining six AEDs were markedly reduced. Postural control improved in all patients. Gain in cognitive functioning was significantly (p=0.002) related to disease duration. The long-term outcomes, in terms of seizure control, motor improvement, and cognitive improvement provide important support for disconnective surgery as first choice treatment for RE.
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Affiliation(s)
- Tiziana Granata
- Department of Pediatric Neuroscience, Carlo Besta Neurological Institute, Milan, Italy.
| | - Sara Matricardi
- Department of Pediatric Neuroscience, Carlo Besta Neurological Institute, Milan, Italy; Department of Pediatrics, University of Chieti, Chieti, Italy
| | - Francesca Ragona
- Department of Pediatric Neuroscience, Carlo Besta Neurological Institute, Milan, Italy
| | - Elena Freri
- Department of Pediatric Neuroscience, Carlo Besta Neurological Institute, Milan, Italy
| | - Marina Casazza
- Department of Neurophysiology, Carlo Besta Neurological Institute, Milan, Italy
| | - Flavio Villani
- Clinical Epileptology and Experimental Neurophysiology Unit, Carlo Besta Neurological Institute, Milan, Italy
| | - Francesco Deleo
- Clinical Epileptology and Experimental Neurophysiology Unit, Carlo Besta Neurological Institute, Milan, Italy
| | - Giovanni Tringali
- Department of Neurosurgery, Carlo Besta Neurological Institute, Milan, Italy
| | - Giuseppe Gobbi
- Child Neurology Unit, IRCCS Istituto delle Scienze Neurologiche, Bellaria Hospital, Bologna, Italy
| | - Laura Tassi
- Epilepsy Surgery Centre C. Munari, Milan, Italy
| | | | | | - Nicola Specchio
- Department of Neuroscience, Bambino Gesù Children's Hospital, Rome, Italy
| | - Federico Vigevano
- Department of Neuroscience, Bambino Gesù Children's Hospital, Rome, Italy
| | - Lucia Fusco
- Department of Neuroscience, Bambino Gesù Children's Hospital, Rome, Italy
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50
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Villani F, Didato G, Deleo F, Tringali G, Garbelli R, Granata T, Marras CE, Cordella R, Spreafico R. Long-term outcome after limited cortical resections in two cases of adult-onset Rasmussen encephalitis. Epilepsia 2014; 55:e38-e43. [DOI: 10.1111/epi.12596] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/14/2014] [Indexed: 11/29/2022]
Affiliation(s)
- Flavio Villani
- Division of Clinical Epileptology & Experimental Neurophysiology; Foundation IRCCS Neurological Institute “Carlo Besta”; Milan Italy
| | - Giuseppe Didato
- Division of Clinical Epileptology & Experimental Neurophysiology; Foundation IRCCS Neurological Institute “Carlo Besta”; Milan Italy
| | - Francesco Deleo
- Division of Clinical Epileptology & Experimental Neurophysiology; Foundation IRCCS Neurological Institute “Carlo Besta”; Milan Italy
| | - Giovanni Tringali
- Division of Neurosurgery III; Foundation IRCCS Neurological Institute “Carlo Besta”; Milan Italy
| | - Rita Garbelli
- Division of Clinical Epileptology & Experimental Neurophysiology; Foundation IRCCS Neurological Institute “Carlo Besta”; Milan Italy
| | - Tiziana Granata
- Division of Child Neurology; Foundation IRCCS Neurological Institute “Carlo Besta”; Milan Italy
| | - Carlo Efisio Marras
- Division of Neurosurgery III; Foundation IRCCS Neurological Institute “Carlo Besta”; Milan Italy
- Neurosurgery Unit “Bambino Gesù” Children Hospital; Rome Italy
| | - Roberto Cordella
- Division of Neurosurgery III; Foundation IRCCS Neurological Institute “Carlo Besta”; Milan Italy
| | - Roberto Spreafico
- Division of Clinical Epileptology & Experimental Neurophysiology; Foundation IRCCS Neurological Institute “Carlo Besta”; Milan Italy
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