Surgical treatment of temporal lobe epilepsy: comparative results of selective amygdalohippocampectomy versus anterior temporal lobectomy from a referral center in Brazil / Tratamento cirúrgico da epilepsia do lobo temporal: resultados comparativos da amigdalohipocampectomia seletiva versus lobectomia temporal anterior em um centro de referência no Brasil

Abstract Background Temporal lobe epilepsy (TLE) is a high prevalence neurological disorder. Surgery has emerged as a promising treatment. Objective The objective of this work is to compare the surgical results of anterior temporal lobectomy (ATL) versus selective amygdalohippocampectomy (SAH) in a cohort of 132 patients. Methods We performed a retrospective study of 146 patients operated for TLE from 2008 to 2019. Initially, 13 patients were excluded from the study due to insufficient medical record data or follow-up loss. One patient was excluded from the analysis of the results due to death in the first postoperative week. We used the ILAE scale to classify seizure control after surgery. In patients with left hippocampal sclerosis, SAH was performed and in right temporal lobe epilepsy, ATL was the approach of choice. Results The mean follow-up time after surgery was 57.2 months (12-137). In our data analysis, we found that the group of patients undergoing ATL had a higher prevalence of being completely seizure-free (ILAE I) (57.1% versus 31%) and a higher rate of satisfactory seizure control (88.6% versus 69.3%) p = 0,006, when compared with patients undergoing SAH. Conclusions The literature is still controversial about seizure control concerning the technique used due to the lack of a robust methodology. Our data analysis identified the superiority of ATL over SAH in seizure outcomes. ATL may be the best option for adequately controlling seizures with minimal additional morbidity in countries with a cost limitation for extended propaedeutics.

Resumo Antecedentes A epilepsia do lobo temporal (TLE) é uma desordem neurológica de alta prevalência. A cirurgia surgiu como um tratamento promissor. Objetivo O objetivo deste trabalho é comparar os resultados da lobectomia temporal anterior (ATL) versus amigdalohipocampectomia seletiva (SAH) em uma coorte de 132 pacientes. Métodos Realizamos um estudo retrospectivo de 146 pacientes operados por TLE de 2008 a 2019. Inicialmente, 13 pacientes foram excluídos por insuficiência de dados em prontuário ou perda de seguimento. Um paciente foi excluído da análise por óbito na primeira semana de pós-operatório. Usamos a escala ILAE para classificar o controle das crises após a cirurgia. Em pacientes com esclerose hipocampal à esquerda, foi realizada a SAH, e na epilepsia do lobo temporal à direita, a ATL foi a abordagem de escolha. Resultados O tempo médio de seguimento após a cirurgia foi de 57,2 meses (12-137). Em nossa avaliação, encontramos que o grupo de pacientes submetidos à ATL apresentou maior prevalência de ausência total de crises (ILAE I) (57,1% versus 31%) e maior taxa de controle satisfatório da epilepsia (88,6% versus 69,3%) p = 0,006, quando comparado ao grupo submetido à SAH. Resultados A literatura ainda é controversa em relação à redução das crises de acordo com a técnica utilizada devido a falta de uma metodologia robusta. Nosso estudo identificou superioridade da ATL sobre a SAH nos desfechos convulsivos. ATL pode ser a melhor opção para controlar adequadamente as convulsões com morbidade adicional mínima em países com limitação de custo para propedêutica estendida.

Rehabilitación neuropsicológica en pacientes pre y posquirúrgicos de lobectomía temporal por epilepsia fármaco resistente / Neuropsychological rehabilitation in pre- and post-surgical temporal lobectomy patients for drug-resistant epilepsy

Introducción. La epilepsia del lóbulo temporal suele producir déficits mnésicos, atencionales y del lenguaje. En la mayoría de los casos, se trata con fármacos an-tiepilépticos, pero falla en un tercio de ellos. Por tal razón, una opción terapéutica es la lobectomía temporal, que contribuye a menguar las crisis. Sin embargo, los procedimientos quirúrgicos pueden conllevar secuelas, entre ellas consecuencias a nivel cognitivo. Para contrarrestar dichos efectos, se acostumbra llevar a cabo una rehabilitación neuropsicológica que va en pro de recuperar, fortalecer y sostener en el tiempo habilidades que ya venían afectándose desde antes de la cirugía. Objetivo. Brindar una reflexión en torno a la intervención neuropsicológica de la epilepsia en el lóbulo temporal. Método. La reflexión sobre el tema parte de un interés clínico y posteriormente se fue ampliando a partir de la revisión de la literatura en diferentes bases de datos como PubMed, Medline y Scopus entre los años 2000 y 2021. Reflexión. Son amplias las opciones terapéuticas a nivel neuropsicológico y pueden contribuir de manera positiva en la recuperación del paciente, por lo cual los profe-sionales requieren conocer las posibilidades de ello para poder utilizar las estrategias más adecuadas según cada caso y brindar opciones que beneficien la calidad de vida, teniendo en cuenta que ninguna es más efectiva que otra. Conclusión. Como resultado, se presenta un panorama general de la rehabilitación neuropsicológica en pacientes pre y posquirúrgicos con lobectomía, haciendo énfasis en la rehabilitación neuropsicológica tradicional y la rehabilitación basada en inteli-gencia artificial, realidad virtual y computación

Introduction. Temporal lobe epilepsy usually produces mnestic, attentional, and language deficits. In most cases, it is treated with antiepileptic drugs, but one third of them fail, so one therapeutic option is temporal lobectomy, which helps to reduce seizures. However, surgical procedures can have sequelae, including cognitive con-sequences. To counteract these effects, neuropsychological rehabilitation is usually carried out in order to recover, strengthen, and sustain in time skills that were already affected before the surgery. Objective. To provide a reflection on the neuropsychological intervention of tem-poral lobe epilepsy. Method. The reflection on the subject starts from a clinical interest and was sub-sequently expanded from the review of the literature in different databases such as PubMed, Medline, and Scopus between 2000 and 2021. Reflection. There are many therapeutic options at the neuropsychological level and they can contribute positively to the patient's recovery, so professionals need to know the possibilities in order to use the most appropriate strategies according to each case and provide options that benefit the quality of life, taking into account that none is more effective than the other one.Conclusion. As a result, an overview of neuropsychological rehabilitation in pre- and post-surgical patients with lobectomy is presented, with emphasis on traditional neuropsychological rehabilitation and rehabilitation based on artificial intelligence, virtual reality, and computation

Alteraciones psiquiátricas tras lobectomía temporal anterior: reporte de casos / Psychiatric alterations after previous temporal lobectomy: Report of cases and review

RESUMEN Introducción: La lobectomía temporal anterior (LTA) es un procedimiento quirúrgico comúnmente utilizado para el tratamiento de la epilepsia del lóbulo temporal refractario al tratamiento médico, con altas tasas de éxito en el control de las crisis. Sin embargo, se ha descrito una asociación importante con enfermedades psiquiátricas que puede afectar al resultado posquirúrgico en estos pacientes. Métodos: Se exponen 2 casos representativos de pacientes que sufrieron complicaciones psiquiátricas en el posoperatorio de lobectomía temporal anterior, a pesar del control exitoso de las crisis. Resultados: Un varón sin antecedentes de enfermedad mental que sufre un episodio depresivo mayor en el periodo posoperatorio mediato, y una mujer con psicosis previa que evidencia exacerbación de su afección como complicación quirúrgica. Conclusiones: La enfermedad psiquiátrica se puede presentar en pacientes posoperatorios de epilepsia de lóbulo temporal tanto con antecedentes de enfermedad mental como sin ellos. Las alteraciones más frecuentes reportadas son depresión, ansiedad, psicosis y trastornos de la personalidad. La inclusión de evaluaciones psiquiátricas en los protocolos prequirúrgicos y posquirúrgicos pueden llevar a una mejora en el pronóstico de los resultados neurológicos y mentales de los pacientes sometidos a la intervención.

ABSTRACT Introduction: Anterior temporal lobectomy (LTA) is a surgical procedure commonly used for the treatment of temporal lobe epilepsy refractory to medical management, with high success rates in the control of seizures. However, an important association with psychiatric illnesses has been described that can alter the postoperative outcome in these patients. Methods: A series of 2 cases of patients who, despite successful crisis control, developed psychiatric complications in the postoperative period of anterior temporal lobectomy. Results: The cases included a male patient with no history of previous mental illness, who developed a major depressive episode in the postoperative period, and a female patient with previous psychosis who presented as a surgical complication exacerbation of psychosis, diagnosed with paranoid schizophrenia. Conclusions: Psychiatric disorders can occur in postoperative temporal lobe epilepsy patients with or without a history of mental illness. The most frequent alterations reported are depression, anxiety, psychosis and personality disorders. The inclusion of psychiatric evaluations in the pre- and post-surgical protocols can lead to an improvement in the prognosis of the neurological and mental outcomes of the patients undergoing the intervention.

Memoria episódica posterior a cirugía de epilepsia del lóbulo temporal / Episodic memory after temporal lobe epilepsy surgery

RESUMEN INTRODUCCIÓN: La cirugía resectiva del lóbulo temporal anterior con amigdalo-hipocampectomía es un tratamiento efectivo para la epilepsia farmacorresistente del lóbulo temporal con esclerosis hipocampal. Sin embargo, este procedimiento conlleva riesgo de deterioro de la memoria episódica verbal y no verbal postoperatoria, dependiendo de la dominancia hemisférica para la memoria y el lenguaje. OBJETIVO: Explorar el desenlace de la memoria episódica posterior a la cirugía resectiva mediante lobectomía temporal anterior con amigdalo-hipocampectomía. MÉTODOS: Se analizó retrospectivamente la memoria episódica verbal y no verbal mediante pruebas neurop-sicológicas de 51 pacientes consecutivos sometidos a lobectomía temporal anterior con amigdalo-hipocampectomía del lado izquierdo y derecho. Todos los pacientes fueron sometidos a resonancia magnética cerebral preoperatoria, video-electroencefalografía y evaluaciones neuropsicológicas. A 12 pacientes (24 %) no se les realizó el test de Wada. RESULTADOS: Hubo disminución en la memoria episódica verbal postoperatoria con diferencias respecto a la preoperatoria, en la subprueba de textos II recuerdo de la escala de memoria de Wechsler III (p = 0,035). El resultado en la memoria episódica visual se mantuvo igual, no hubo diferencias en el grupo de lobectomía temporal estándar. CONCLUSIÓN: La lobectomía temporal anterior más amigdalo-hipocampectomía izquierda afecta levemente el desempeño de la memoria episódica postoperatoria, que clínicamente no es significativo en pacientes con epilepsia del lóbulo temporal mesial farmacorresistente.

SUMMARY INTRODUCTION: Resective surgery of the anterior temporal lobe with amygdalohippocampectomy is an effective treatment for drug-resistant epilepsy of the temporal lobe with hippocampal sclerosis. However, this procedure carries a risk of post-operative episodic verbal and nonverbal memory impairment depending on the hemispheric dominance for memory and language. OBJECTIVE: To explore the outcome of episodic memory after resective surgery by means of anterior temporal lobectomy with amygdalohippocampectomy. METHODS: Verbal and non-verbal episodic memory was retrospectively analyzed by neuropsychological tests of 51 consecutive patients undergoing anterior temporal lobectomy with amygadalohyppocampectomy on the left and right sides. All patients underwent preoperative brain MRI, video electroencephalography, and neuropsychological evaluations. 12 patients (24%) did not undergo the Wada test. RESULTS: There was a decrease in postoperative verbal episodic memory with differences compared to preoperative, in the text II subtest recall of the Wechsler III memory scale (p = 0.035). The result in visual episodic memory remained the same, there were no differences in the standard temporal lobectomy group. CONCLUSION: Anterior temporal lobectomy plus left amygadalohyppocampectomy slightly affects the performance of postoperative episodic memory, which is clinically not significant in patients with drug-resistant mesial temporal lobe epilepsy.

Quiste cerebral como complicación tardía inusual de lobectomía temporal en epilepsia farmacorresistente: reporte de un caso / Brain cyst as an unusual delayed complication of temporal lobectomy in drug-resistant epilepsy: a case report

RESUMEN La lobectomía temporal anterior es una técnica que ha probado, con un muy alto nivel de evidencia (60-73% de los casos), alcanzar un estado libre de convulsiones en pacientes con epilepsia focal farmacorresistente del lóbulo temporal. Se trata de una técnica que aun cuando ha demostrado ser segura, no está del todo libre de complicaciones. Se han reportado, por ejemplo, cuadrantanopsia homónima superior y depresión como las complicaciones más frecuentes, en tanto que la ocurrencia de un quiste cerebral sintomático de instauración tardía es muy poco usual. Se describe el caso de una paciente sometida a lobectomía temporal derecha que presentó esta infrecuente complicación, y se incluyen una pertinente revisión de la literatura y mecanismos fisiopatogénicos propuestos.

SUMMARY Anterior temporal lobectomy is a technique that has proven, with a very high level of evidence (60-73% of the cases), to reach a seizure-free status in patients with drug-resistant focal temporal lobe epilepsy. It is a technique that although generally safe, cannot be considered entirely free of complications. Superior homonymus quadrantanopsia and depression have been reported, for instance, as the most frequent complications. While the occurrence of a late-onset symptomatic brain cyst, is very rare. The case of a patient who was subjected to right temporal lobectomy and presented this unusual complication is described here, with inclusion of a review ofpertinent literature and proposed pathophysiological mechanisms.

A Primer on Magnetic Resonance-Guided Laser Interstitial Thermal Therapy for Medically Refractory Epilepsy

Epilepsy surgery that eliminates the epileptogenic focus or disconnects the epileptic network has the potential to significantly improve seizure control in patients with medically intractable epilepsy. Magnetic resonance-guided laser interstitial thermal therapy (MRgLITT) has been an established option for epilepsy surgery since the US Food and Drug Administration cleared the use of MRgLITT in neurosurgery in 2007. MRgLITT is an ablative stereotactic procedure utilizing heat that is converted from laser energy, and the temperature of the tissue is monitored in real-time by MR thermography. Real-time quantitative thermal monitoring enables titration of laser energy for cellular injury, and it also estimates the extent of tissue damage. MRgLITT is applicable for lesion ablation in cases that the epileptogenic foci are localized and/or deep-seated such as in the mesial temporal lobe epilepsy and hypothalamic hamartoma. Seizure-free outcomes after MRgLITT are comparable to those of open surgery in well-selected patients such as those with mesial temporal sclerosis. Particularly in patients with hypothalamic hamartoma. In addition, MRgLITT can also be applied to ablate multiple discrete lesions of focal cortical dysplasia and tuberous sclerosis complex without the need for multiple craniotomies, as well as disconnection surgery such as corpus callosotomy. Careful planning of the target, the optimal trajectory of the laser probe, and the appropriate parameters for energy delivery are paramount to improve the seizure outcome and to reduce the complication caused by the thermal damage to the surrounding critical structures.

A Primer on Magnetic Resonance-Guided Laser Interstitial Thermal Therapy for Medically Refractory Epilepsy

Epilepsy surgery that eliminates the epileptogenic focus or disconnects the epileptic network has the potential to significantly improve seizure control in patients with medically intractable epilepsy. Magnetic resonance-guided laser interstitial thermal therapy (MRgLITT) has been an established option for epilepsy surgery since the US Food and Drug Administration cleared the use of MRgLITT in neurosurgery in 2007. MRgLITT is an ablative stereotactic procedure utilizing heat that is converted from laser energy, and the temperature of the tissue is monitored in real-time by MR thermography. Real-time quantitative thermal monitoring enables titration of laser energy for cellular injury, and it also estimates the extent of tissue damage. MRgLITT is applicable for lesion ablation in cases that the epileptogenic foci are localized and/or deep-seated such as in the mesial temporal lobe epilepsy and hypothalamic hamartoma. Seizure-free outcomes after MRgLITT are comparable to those of open surgery in well-selected patients such as those with mesial temporal sclerosis. Particularly in patients with hypothalamic hamartoma. In addition, MRgLITT can also be applied to ablate multiple discrete lesions of focal cortical dysplasia and tuberous sclerosis complex without the need for multiple craniotomies, as well as disconnection surgery such as corpus callosotomy. Careful planning of the target, the optimal trajectory of the laser probe, and the appropriate parameters for energy delivery are paramount to improve the seizure outcome and to reduce the complication caused by the thermal damage to the surrounding critical structures.

Clinical outcomes after medial temporal lobe epilepsy surgery: Anterior temporal lobectomy versus selective amygdalohippocampectomy / 中南大学学报(医学版)

Objective:To compare the anterior temporal lobectomy (ATL) with transsylvian selective amygdalohippocampectomy (SeAH) in 72 patients with medial temporal lobe epilepsy (MTLE) regarding the seizure control and neuropsychological outcomes.Methods:Clinical data and follow-up data were collected and retrospectively analyzed.SeAH and ATL were used in 39 and 33 patients,respectively.All eligible patients were followed up at least one year.Wechsler Adult Intelligence Scale-Revised and the Wechsler Memory Scale-Revised were used to test the patients' neuropsychology before and after the surgery for one year.Results:Fifty-nine patients (81.9％) achieved satisfactory seizure control (62.5％ Engel Class Ⅰ and 19.4％ Class Ⅱ).ATL obtained 84.8％ satisfactory seizure control (28 patients),and the success rate was 79.5％ (31 patients) for SeAH.There was no significant difference in seizure control between SeAH and ATL (P=0.760).The postoperative verbal IQ of SeAH group increased significantly in both side surgery (P＜0.05),while the increase was not significant in the group of ATL of both side surgery (P＞0.05).Regarding left-side surgery,postoperative verbal memory and total memory were increased significantly in the group of SeAH (P＜0.05),while the increases were not significant in the group ofATL (P＞0.05).In the right-side surgery,postoperative verbal memory and total memory were increased significantly in the two surgery strategy groups (P＜0.05),while no significant increases were seen in non-verbal memory of the two surgery strategy groups (P＞0.05).Conclusion:Microsurgery for the treatment of refractory MTLE is successful and safe,and should be encouraged.The seizure outcome is not different between ATL and SeAH,while regarding as verbal IQ and verbal memory outcomes,SeAH may be superior to ATL in dominant hemisphere surgery.

Transtemporal amygdalohippocampectomy: a novel minimally-invasive technique with optimal clinical results and low cost / Amigdalo-hipocampectomia transtemporal: técnica minimamente invasiva com ótimos resultados clínicos e baixo custo

ABSTRACT Mesial temporal sclerosis creates a focal epileptic syndrome that usually requires surgical resection of mesial temporal structures. Objective: To describe a novel operative technique for treatment of temporal lobe epilepsy and its clinical results. Methods: Prospective case-series at a single institution, performed by a single surgeon, from 2006 to 2012. A total of 120 patients were submitted to minimally-invasive keyhole transtemporal amygdalohippocampectomy. Results: Of the patients, 55% were male, and 85% had a right-sided disease. The first 70 surgeries had a mean surgical time of 2.51 hours, and the last 50 surgeries had a mean surgical time of 1.62 hours. There was 3.3% morbidity, and 5% mild temporal muscle atrophy. There was no visual field impairment. On the Engel Outcome Scale at the two-year follow-up, 71% of the patients were Class I, 21% were Class II, and 6% were Class III. Conclusion: This novel technique is feasible and reproducible, with optimal clinical results.

RESUMO A esclerose mesial temporal é uma síndrome epiléptica focal que requer ablação de estruturas mesiais temporais. Objetivo: Descrever e padronizar a técnica operatória e resultados clínicos. Métodos: Série prospectiva de casos de uma única instituição, realizadas por um único cirurgião, de 2006 a 2012. 120 doentes foram submetidos a amigdalo-hipocampectomia transtemporal por acesso mínimo (keyhole). Resultados: 55% eram do sexo masculino, 85% apresentavam doença do lado direito. As primeiras 70 cirurgias tiveram um tempo cirúrgico médio de 2,51 horas, e as últimas 50 cirurgias tiveram um tempo cirúrgico médio de 1,62 horas. Houve morbidade de 3,3%. 5% dos doentes apresentaram atrofia leve de músculo temporal. O controle das convulsões foi avaliado com a Escala de Engel no segundo ano de pós operatorio, 71% eram Classe I, 21% Classe II, 6% Classe III. Conclusão: Esta nova técnica é viável, reprodutível e com resultados clínicos adequados.

Potential role of a cognitive rehabilitation program following left temporal lobe epilepsy surgery / Reabilitação neuropsicológica em pacientes com epilepsia submetidos à lobectomia temporal dominante

ABSTRACT Research into memory and epilepsy has focused on measuring problems and exploring causes with limited attention directed at the role of neuropsychological rehabilitation in alleviating post-operative memory difficulties. Objectives To assess the effects of a memory rehabilitation program in patients with left temporal lobe epilepsy following surgery. Methods Twenty-four patients agreed to participate and 18 completed the study; nine received memory rehabilitation while nine had no input and were designated as controls. Verbal learning efficiency, naming abilities, memory subjective ratings, ecological activity measures and a language fMRI paradigm were used as outcome measures. Results Improved verbal learning and naming test performance, increase in memory strategy use and improved self-perception were observed following the rehabilitation. Changes in fMRI activation patterns were seen in the rehabilitation group over the long term. Conclusion The findings support the potential role of a cognitive rehabilitation program following left temporal lobe surgery.

RESUMO As publicações na área de epilepsia e memória se focam em mensurar prejuízos e investigar causas, com poucos dados sobre reabilitação neuropsicológica em pacientes pós-cirúrgicos. Objetivos Avaliar os efeitos da reabilitação neuropsicológica em pacientes submetidos a lobectomia temporal dominante. Métodos Vinte e quatro pacientes iniciaram o estudo, apenas dezoito o concluíram, dos quais 9 foram participantes de sessões de reabilitação com enfoque em memória. Todos os participantes foram avaliados quanto a autopercepção de dificuldades de memória; ao uso de estratégias para minimizar tais dificuldades; a habilidade de nomeação e a aprendizagem verbal e foram submetidos à ressonância magnética funcional. Resultados Foi encontrado efeito significativo da reabilitação neuropsicológica na autopercepção de dificuldades de memória; no uso de estratégias compensatórias; na aprendizagem verbal e na nomeação. Alterações no padrão de ativação na RMf foram observadas no grupo submetido a reabilitação. Conclusão A reabilitação neuropsicológica pode beneficiar pacientes submetidos a lobectomia temporal antero-mesial dominante com prejuízos de memória.

Clinical and electrophysiological diversity of the mesial temporal lobe epilepsy confirmed by stereotactic electroencephalogram / 中华神经科杂志

Objective To study the diversities of imaging, symptoms, electrophysiology and clinical value of the stereoelectroencephalography(SEEG) in patients with mesial temporal lobe epilepsy.Methods Eight patients with intractable epilepsy in Epilepsy Center of Yuquan Hospital of Tsinghua University who underwent mesial temporal lobectomy were recruited in this study, and their epileptic foci could not be accurately positioned.Therefore stereotactic brain electrodes were implanted, and their usual attack originated from mesial temporal lobe structure were confirmed.There was no seizure in the one year follow-up.Results Symptoms of the eight patients behaved differently, and the onset of the seizures in scalp electroencephalograph or SEEG showed diversities.Epileptic discharges were found originated from the mesial temporal lobe after implanting electrodes: in the early stage of discharges, four cases had the conduction to insular lobe structure;two cases had the conduction to contralateral mesial temporal lobe;one case had the conduction to retrosplenial cortex;one case had the conduction to parietal lobe;one case had the conduction to frontal lobe and rapid generalization (one case had the conduction to insular lobe and contralateral mesial temporal lobe meanwhile).Conclusions There is difference in clinic, imaging and electrophysiology of the patients with mesial temporal lobe epilepsy The non-specificity can be explained by the evolution of the intracranial electroencephalography, which can help us know its network conduction pattern Insular lobe is the most common conduction approach of mesial temporal lobe epilepsy in early stage SEEG can be used as a microinvasive, accurate preoperative localization method, which can help us to locate accurately and understand the discharges and conduction mode.

Anterior temporal lobectomy versus selective amygdalohippocampectomy in patients with mesial temporal lobe epilepsy / Lobectomia temporal anterior versus amigdalohipocampectomia seletiva para epilepsia de lobo temporal mesial

ABSTRACT Objective To contribute our experience with surgical treatment of patients with mesial temporal lobe epilepsy (mTLE) undergoing anterior temporal lobectomy (ATL) or selective amygdalohippocampectomy (SelAH). Method This is a retrospective observational study. The sample included patients with medically refractory mTLE due to unilateral mesial temporal sclerosis who underwent either ATL or SelAH, at Hospital de Clinicas – UFPR, from 2005 to 2012. We report seizure outcomes, using Engel classification, cognitive outcomes, using measurements of verbal and visuospatial memories, as well as operative complications. Result Sixty-seven patients (33 ATL, 34 SelAH) were studied; median follow-up was 64 months. There was no statistically significant difference in seizure or neuropsychological outcomes, although verbal memory was more negatively affected in ATL operations on patients’ dominant hemispheres. Higher number of major complications was observed in the ATL group (p = 0.004). Conclusion Seizure and neuropsychological outcomes did not differ. ATL appeared to be associated with higher risk of complications.

RESUMO Objetivo Contribuir com nossa experiência para o tratamento cirúrgico de pacientes com epilepsia do lobo temporal mesial submetidos a lobectomia temporal anterior (LTA) ou amigdalohipocampectomia seletiva (AHS). Método Estudo retrospectivo observacional. Foram incluídos pacientes com epilepsia refratária devido a esclerose mesial temporal unilateral, submetidos a LTA ou AHS no Hospital de Clínicas – UFPR, entre 2005-2012. Foram comparados os resultados cognitivos (análises de memórias verbal e visuoespacial), controle de crises (Engel) e complicações cirúrgicas. Resultados Sessenta e sete pacientes (33 LTA, 34 AHS) foram estudados; o período de acompanhamento médio foi de 64 meses. Não houve diferença no controle das crises ou resultado neuropsicológico, mas a memória verbal foi mais negativamente afetada nos pacientes submetidos à LTA no hemisfério dominante. Maior número de complicações graves ocorreu no grupo de LTA (p = 0.004). Conclusão Controle de crises e resultados neuropsicológicos não diferiram. LTA pareceu estar associada a um maior risco cirúrgico.

Changes in Central Auditory Processing in Patients with Mesial Temporal Lobe Epilepsy after Anterior Temporal Lobectomy with Amygdalohippocampectomy

BACKGROUND AND PURPOSE: This study aimed to determine the effects of anterior temporal lobectomy with amygdalohippocampectomy (ATL-AH) on central auditory processing (CAP) in patients with mesial temporal lobe epilepsy with hippocampal sclerosis (mTLE-HS), and to identify factors that may contribute to the postoperative worsening of CAP. METHODS: Frequency-pattern, duration-pattern, and dichotic tests were performed before and after epilepsy surgery in 22 patients with normal hearing according to pure-tone audiometry. RESULTS: No significant difference in CAP scores was detected between pre- and postoperative tests, but there was a strong association between surgery in the language-dominant temporal lobe and postoperative worsening in the non-dominant-side dichotic test (p<0.05). The probability of a decreased performance in a non-dominant-side dichotic test after surgery was 7.5-fold greater in patients who underwent surgery on the dominant temporal lobe compared with the nondominant temporal lobe. No significant association of postoperative worsening in CAP with the verbal, nonverbal intelligence quotient, or right- or left-side lobectomy was noted. CONCLUSIONS: These results suggest that ATL-AH on the dominant side in patients with mTLE-HS worsens the CAP ability in the non-dominant-side dichotic test.

Preliminary investigation on memory outcomes following selective amygdalohippocampectomy versus anterior temporal lobectomy for temporal lobe epilepsy and hippocampal sclerosis / 中国神经精神疾病杂志

Objective To investigate the different memory outcomes in temporal lobe epilepsy patients underwent different surgical approaches.Methods Two hundred forty-eight patients with temporal lobe epilepsy and hippocampal scle-rosis underwent standard anterior temporal lobectomy ( ATL, n=83 ) or selective amygdalohippocampectomy ( SAH, n=165) from 2009 to 2013.All the patients underwent clinical memory function assessment before surgery, 3 months and 2 years after surgery respectively.Results The memory quotient ( MQ) of patients who underwent brain surgery in the domi-nant hemisphere significantly decreased 3 months after surgery (74.5 ±16.2, 75.6 ±19.5) compared to presurgery MQ (82.9 ±15.8, 83.2 ±21.2) in both ATL and SAH groups (P<0.05).Although MQ was slightly recovered at 2 years af-ter surgery, MQ (75.1 ±14.1, 76.1 ±17.6) was still significantly lower compared with presurgery MQ (P<0.05).A-mong this, both the decrease extent of the MQ 3 months after surgery and 2 years after surgery were smaller in the SAH group than in the ATL group (7.6 vs.8.4;7.1 vs.7.8).The MQ of patients who underwent brain surgery in the non-dominant hemisphere (either ATL or SAH ) increased slightly 3 months after surgery (87.2 ±15.1, 88.1 ±16.9) com-pared to presurgery MQ (85.5 ±13.5, 85.3 ±19.7) although the difference was not statistically significant.The MQ of these two groups improved significantly 2 years after surgery (92.8 ±12.7, 93.7 ±17.1)(P<0.05).The improvement extent of the MQ was larger in the SAH group than in the ATL group (8.4 vs.7.3).Conclusions SAH may be better than ATL in the maintenance of memory function in patients with temporal lobe epilepsy and hippocampal sclerosis.

Correlation between extratemporal hypometabolism and the outcome of temporal lobectomy in patients with temporal lobe epilepsy / 中华核医学与分子影像杂志

Objective To explore the correlation between extratemporal hypometabolism on preoperative 18F-FDG PET imaging and the outcome after temporal lobectomy in temporal lobe epilepsy (TLE)patients.Methods A total of 96 patients with intractable TLE who underwent temporal lobectomy were recruited.The outcome was evaluated according to International League Against Epilepsy (ILAE) 2001 outcome classification (OC) criteria:OC 1-3 was considered as good outcome and OC4-6 as poor outcome.The follow-up period was more than 2 years.The 18F-FDG PET brain images were retrospectively analyzed.The preoperative extratemporal cortical hypometabolism and extratemporal subcortical hypometabolism occurred in basal ganglia and thalamus were taken as independent exposure factors of poor outcome and the odds ratios (OR) were calculated respectively.Results Thirteen of 96 cases had poor outcome.Extratemporal cortical hypometabolism was found in 12 of 83(14.5％) cases with good outcome and in 11 of 13 cases with poor outcome.Extratemporal subcortical hypometabolism was found in 25 of 83 (30.1％) cases with good outcome and in 10 of 13 cases with poor outcome.The occurrence of extratemporal hypometabolism was significantly higher in poor outcome group than that in good surgical outcome group (cortical:x2 =26.63 ;subcortical:x2 =8.70; both P＜0.05).The OR of extratemporal cortical hypometabolism was 32.54,with 95％ CI of 6.40-165.44,and that of extratemporal subcortical hypometabolism was 7.73,with 95％ CI of 1.96-30.52.Conclusion Extratemporal cortical hypometabolism and subcortical hypometabolism in TLE patients are associated with poor outcome of temporal lobectomy in TLE patients.

Temporal lobe epilepsy surgery in children versus adults: from etiologies to outcomes / 소아과

Temporal lobe epilepsy (TLE) is the most common type of medically intractable epilepsy in adults and children, and mesial temporal sclerosis is the most common underlying cause of TLE. Unlike in the case of adults, TLE in infants and young children often has etiologies other than mesial temporal sclerosis, such as tumors, cortical dysplasia, trauma, and vascular malformations. Differences in seizure semiology have also been reported. Motor manifestations are prominent in infants and young children, but they become less obvious with increasing age. Further, automatisms tend to become increasingly complex with age. However, in childhood and especially in adolescence, the clinical manifestations are similar to those of the adult population. Selective amygdalohippocampectomy can lead to excellent postoperative seizure outcome in adults, but favorable results have been seen in children as well. Anterior temporal lobectomy may prove to be a more successful surgery than amygdalohippocampectomy in children with intractable TLE. The presence of a focal brain lesion on magnetic resonance imaging is one of the most reliable independent predictors of a good postoperative seizure outcome. Seizure-free status is the most important predictor of improved psychosocial outcome with advanced quality of life and a lower proportion of disability among adults and children. Since the brain is more plastic during infancy and early childhood, recovery is promoted. In contrast, long epilepsy duration is an important risk factor for surgically refractory seizures. Therefore, patients with medically intractable TLE should undergo surgery as early as possible.

Evaluación de la calidad de vida en pacientes con epilepsia refractaria del lóbulo temporal intervenidos quirúrgicamente / Evaluation of the quality of life in operated refractory epileptic patients

La Epilepsia afecta a 1-2 por ciento de la población y 20 por ciento de los pacientes son médicamente intratables crónicos y de ellos, a su vez, 5-10 por ciento son candidatos a cirugía de la epilepsia, con la que se reportan favorables resultados en la calidad de vida y reducción de las crisis. Este trabajo tiene por objetivo evaluar la calidad de vida de los pacientes portadores de epilepsia refractaria del lóbulo temporal en su etapa prequirúrgica y su evolución posterior al tratamiento quirúrgico. Es un estudio clínico descriptivo, longitudinal, prospectivo, realizado en el Centro Internacional de Restauración Neurológica (CIREN). Se evaluaron los pacientes con el criterio de epilepsia refractaria en una consulta de preevaluación, donde se siguieron durante todo su estudio preoperatorio, desde enero del 2002 hasta diciembre del 2007. Se realizó lobectomía temporal a los 20 pacientes considerados con criterio y se utilizó el test de Calidad de Vida (QOLIE-31) un mes antes, a los seis meses y al año después del tratamiento quirúrgico, para evaluar la calidad de vida. La mediana del puntaje antes de la operación fue de 26,5; seis meses después se incrementó a 89, y se mantuvo en 84 al cabo del año. Los resultados obtenidos después de la cirugía mostraron un aumento de los indicadores de la calidad de vida, acompañados de reducción del número de crisis epilépticas. Se precisa la evolución pareada (antes y un año después de la cirugía) de cada uno de los indicadores considerados eficaces para la evaluación global de la calidad de vida, y se detectaron diferencias estadísticamente significativas en todos los indicadores. La calidad de vida aumentó considerablemente después del proceder quirúrgico(AU)

Epilepsy affects 1-2 percent of the population and 20 percent of patients are chronic medically untreatable. 5-10 percent are candidates to epilepsy surgery with favorable results in the quality of life and reduction of crisis. To evaluate the quality of life of patients with temporal lobe refractory epilepsy during presurgical evaluation and after surgical treatment with good outcome. It is a prospective, longitudinal and descriptive clinical study. Patients with refractory epilepsy were evaluated in a clinic during presurgical and postsurgical evaluation during the period between January 2002 and December 2007. Partial temporal lobotomy and transurgical electrocorticography were performed on 20 patients with criteria. A health quality test(QOLIE-31) was applied a month before, six and twelve months after lobotomy. Median score before the operation was of 26,5, six months after, this store increased to 89 and was maintained at 84 at the end of a year. Obtained results after surgery showed an increase in the indicators of the quality of life, accompanied with a reduction in the number of epileptic crisis. Paired evolution is needed (before and a year after surgery) of each one of the indicators considered efficacious for the global evaluation of the quality of life where statistic significant differences were detected in all the indicators. The quality of life increased considerably after the surgical procedure(AU)

Emotional declarative memory assessment of patients with mesial temporal lobe epilepsy and patients submitted to mesial temporal lobectomy / Avaliação da memória declarativa emocional em pacientes com epilepsia temporal mesial e pacientes submetidos à lobectomia temporal mesial

Epileptic seizures generate cognitive and behavioral impacts in individuals who suffer from epilepsy. Declarative memory is one of the cognitive functions that can be affected by epileptic seizures. The main objective of this work was to investigate neurocognitive function, especially the emotional working memory of patients with unilateral mesial temporal lobe epilepsy, and that of patients submitted to unilateral mesial temporal lobectomy. A face recognition test that can simultaneously recruit the frontal lobe (working memory) and mesial temporal lobe (emotional memory) was used to investigate emotional working memory. Our findings showed that the epilepsy factor significantly compromised the performance in the emotional memory test. On the other hand, surgical removal of the epileptic focus promoted an improvement in the emotional working memory of these patients, in addition to the significantly decrease in the number of seizures.

Crises epilépticas geram impactos comportamentais e cognitivos em indivíduos que sofrem de epilepsia. Uma das funções cognitivas que pode ser afetada pelas crises epilépticas é a memória declarativa. O objetivo do nosso estudo foi investigar funções cognitivas, especialmente a memória operacional emocional de pacientes com epilepsia temporal mesial unilateral e pacientes submetidos a lobectomia temporal mesial unilateral. Para investigar a memória operacional emocional foi utilizado um teste de reconhecimento de faces que pode recrutar simultaneamente o lobo frontal (memória operacional) e o lobo temporal mesial (memória emocional). Nossos resultados demonstram que o fator epilepsia compromete de forma significativa o desempenho no teste de memória emocional. Por outro lado, a remoção cirúrgica do foco epiléptico promoveu uma melhora na memória emocional desses pacientes, além de diminuir o número de crises.

Evolución de la memoria episódica en pacientes epilépticos sometidos a lobectomía temporal / Evolution of episodic memory in epileptic patients submitted to temporal lobectomy

Introducción: La memoria episódica resulta vulnerable a la lobectomía temporal. Nuestro objetivo es describir los cambios que aparecen en este subsistema de memoria, en pacientes sometidos a lobectomía temporal realizada como estrategia para control de crisis. Pacientes y Métodos: La muestra está compuesta por 11 pacientes, los cuales fueron evaluados antes de realizar la lobectomía temporal y al año de ésta, utilizando una batería de pruebas neuropsicológicas. Resultados: Observamos disminución en el rendimiento mnésico, en la modalidad ipsilateral al hemisferio donde se realiza la lobectomía y aumento en la modalidad relacionada con el hemisferio contralateral a la intervención. Sin embargo estas diferencias en elrendimiento entre los dos momentos evaluativos no se manifiestan en igual magnitud en todas las variables evaluadas ni alcanzan valor estadístico significativo. Conclusiones: Asociado a la lobectomía temporal el perfil neuropsicológico de la memoria episódica muestra disminución del rendimiento en la modalidad ipsilateral a la cirugía y mejoría en la modalidad contralateral, evolución esta que refuerza el supuesto de lateralización funcional.

Introduction: Episodic memory is vulnerable to temporal lobectomy. Our objective is to describe the changes that appear in this memory sub-system in patients submitted to temporal lobectomy, as a strategy to crisis control. Patients and methods: The simple is composed of 11 patients who were evaluated before performing the temporal lobectomy and a year after, using neuropsychologic tests.Results: We observed a diminishing in the mnesic rendering, in the ipsilateral modality to the hemisphere where the lobectomy is performed and an increase in the modality related with the contralateral hemisphere to that of the intervention. But nevertheless, these differences as to the rendering of the evaluative moments that neither manifest themselves in thesame magnitude in all evaluated variables nor reach significant statistical value. Conclusions: The neuropsychologic profile of episodic memory associated to temporal lobectomy shows a diminishing in therendering of ipsilateral modality to surgery, but an improvement in the contralateral modality an evolution that reinforces the supposing of a functional lateralization.

Effects of Anterior Temporal Lobectomy for Mesial Temporal Lobe Epilepsy on Intellectual and Memory Functions: 1-Year Follow-up

BACKGROUND: The aim of this study was to identify factors predicting intellectual and memory changes following anterior temporal lobectomy (ATL) for mesial temporal lobe epilepsy (TLE). METHODS: The sample consisted of 31 patients who underwent ATL for treatment of medically intractable TLE. All patients were administered intellectual and memory tests preoperatively and postoperatively. RESULTS: All statistically significant intellectual and memory changes at 1-year follow-up were in the direction of improvement. Left vs. right ATL had significantly differential effects on verbal intelligence and verbal memory, reflecting greater decline (or less improvement) following a left ATL. A later onset age of seizures, an older age at surgery, and a higher presurgical cognitive performance predicted a greater cognitive decline following an ATL. CONCLUSIONS: At 1-year after ATL, most cognitive functions showed either no significant changes or significant changes in a favorable direction. Decreased verbal functions following a left ATL was the area of greatest potential neuropsychological morbidity associated with ATL. Greater cognitive decline following ATL was predicted by later onset age of recurrent seizures, older age at time of surgery, and higher presurgical cognitive performance.