Long-term seizure outcome after mesial temporal lobe epilepsy surgery: corticalamygdalohippocampectomy versus selective amygdalohippocampectomy

2008 ◽  
Vol 108 (3) ◽  
pp. 517-524 ◽  
Author(s):  
Taner Tanriverdi ◽  
Andre Olivier ◽  
Nicole Poulin ◽  
Frederick Andermann ◽  
François Dubeau
Keyword(s):  
Temporal Lobe Epilepsy ◽  
Temporal Lobe ◽  
Seizure Control ◽  
Surgical Approaches ◽  
Seizure Outcome ◽  
Selective Amygdalohippocampectomy ◽  
Selective Approach ◽  
Significant Difference ◽  
The Impact

Object Resection strategies for the treatment of temporal lobe epilepsy (TLE) are a matter of discussion, and little information is available. The aim of this study was to compare seizure outcomes at the 5-year follow-up in patients with medically refractory unilateral mesial TLE (MTLE) due to hippocampal sclerosis (HS) who were treated using a cortical amygdalohippocampectomy (CorAH) or a selective AH (SelAH). Methods The authors obtained data from 100 adult patients who underwent surgery for MTLE. Fifty patients underwent a CorAH and 50 underwent an SelAH. Seizure control achieved with each technique was compared using the Engel classification scheme. Results Overall, at the 5-year follow-up, favorable (Engel Classes I and II) seizure outcomes were noted in 82 and 90% of patients who had undergone CorAH and SelAH, respectively. Furthermore, 40% of the patients who had undergone a CorAH and 58% of those who had undergone an SelAH were seizure free (Engel Class Ia). There was no statistically significant difference between the 2 surgical approaches in terms of seizure outcome at the 5-year follow-up (p = 0.38). Conclusions Both CorAH and SelAH can lead to similar favorable seizure control in patients with MTLE/HS. However, the authors suggest that the transcortical selective approach has the great advantage of minimizing or completely abolishing the impact of dividing several venous and arterial adhesions which are tedious, time consuming, and, at times, associated with some degree of cerebral swelling.

Memory outcome after temporal lobe epilepsy surgery: corticoamygdalohippocampectomy versus selective amygdalohippocampectomy

2010 ◽  
Vol 113 (6) ◽  
pp. 1164-1175 ◽  
Author(s):  
Taner Tanriverdi ◽  
Roy William Roland Dudley ◽  
Alya Hasan ◽  
Ahmed Al Jishi ◽  
Qasim Al Hinai ◽  
...  
Keyword(s):  
Temporal Lobe Epilepsy ◽  
Temporal Lobe ◽  
Verbal Memory ◽  
Hippocampal Sclerosis ◽  
Surgical Approaches ◽  
Seizure Outcome ◽  
Nonverbal Memory ◽  
Selective Amygdalohippocampectomy ◽  
Significant Difference

Object The aim of this study was to compare IQ and memory outcomes at the 1-year follow-up in patients with medically refractory mesial temporal lobe epilepsy (MTLE) due to hippocampal sclerosis. All patients were treated using a corticoamygdalohippocampectomy (CAH) or a selective amygdalohippocampectomy (SelAH). Methods The data of 256 patients who underwent surgery for MTLE were retrospectively evaluated. One hundred twenty-three patients underwent a CAH (63 [right side] and 60 [left side]), and 133 underwent an SelAH (61 [right side] and 72 [left side]). A comprehensive neuropsychological test battery was assessed before and 1 year after surgery, and the results were compared between the surgical procedures. Furthermore, seizure outcome was compared using the Engel classification scheme. Results At 1-year follow-up, there was no statistically significant difference between the surgical approaches with respect to seizure outcome. Overall, IQ scores showed improvement, but verbal IQ decreased after left SelAH. Verbal memory impairment was seen after left-sided resections especially in cases of SelAH, and nonverbal memory decreased after right-sided resection, especially for CAH. Left-sided resections produced some improvement in nonverbal memory. Older age at surgery, longer duration of seizures, greater seizure frequency before surgery, and poor seizure control after surgery were associated with poorer memory. Conclusions Both CAH and SelAH can lead to several cognitive impairments depending on the side of the surgery. The authors suggest that the optimal type of surgical approach should be decided on a case-by-case basis.

Seizure outcomes and mesial resection volumes following selective amygdalohippocampectomy and temporal lobectomy

2012 ◽  
Vol 32 (3) ◽  
pp. E8 ◽  
Author(s):  
Oren Sagher ◽  
Jayesh P. Thawani ◽  
Arnold B. Etame ◽  
Diana M. Gomez-Hassan
Keyword(s):  
Temporal Lobe Epilepsy ◽  
Temporal Lobe ◽  
Test Scores ◽  
Memory Function ◽  
Mesial Temporal Lobe Epilepsy ◽  
Temporal Lobectomy ◽  
Surgical Approaches ◽  
Seizure Outcome ◽  
Selective Amygdalohippocampectomy ◽  
Significant Difference

Object Anterior temporal lobectomy (ATL) and selective amygdalohippocampectomy (SelAH) are the preferred surgical approaches for the treatment of medically refractory epilepsy involving the nondominant and dominant temporal lobes, respectively. Both techniques provide access to mesial structures—with the ATL providing a wider surgical corridor than SelAH. Because the extent of mesial temporal resection potentially impacts seizure outcome, the authors examined mesial resection volumes, seizure outcomes, and neuropsychiatric test scores in patients undergoing either ATL or transcortical SelAH at a single institution. Methods A retrospective study was conducted in 96 patients with medically refractory mesial temporal lobe epilepsy. Fifty-one patients who had nondominant temporal lobe epilepsy underwent standard ATL, and 45 patients with language-dominant temporal lobe epilepsy underwent transcortical SelAH. Volumetric MRI analysis was used to quantify the mesial resection in both groups. In addition, the authors examined seizure outcomes and the change in neuropsychiatric test scores. Results Seizure-free outcome in the entire patient cohort was 94% at a mean follow-up of 44 months. There was no significant difference in the seizure outcome between the 2 groups. The extent of resection of the mesial structures following ATL was slightly higher than for SelAH (98% vs 91%, p < 0.0001). The change in neuropsychiatric test scores largely reflected the side of surgery, but overall IQ and memory function did not change significantly in either group. Conclusions Transcortical SelAH provides adequate access to the mesial structures, and allows for a resection that is nearly as extensive as that achieved with standard ATL. Seizure outcomes and neuropsychiatric sequelae are similar in both procedures.

scholarly journals Seizure outcome in pediatric medically refractory temporal lobe epilepsy surgery: selective amygdalohippocampectomy versus anterior temporal lobectomy

2018 ◽  
Vol 22 (3) ◽  
pp. 276-282 ◽  
Author(s):  
Cameron A. Elliott ◽  
Andrew Broad ◽  
Karl Narvacan ◽  
Trevor A. Steve ◽  
Thomas Snyder ◽  
...  
Keyword(s):  
Temporal Lobe Epilepsy ◽  
Temporal Lobe ◽  
Pediatric Patients ◽  
Temporal Lobectomy ◽  
Seizure Outcome ◽  
Anterior Temporal Lobectomy ◽  
Selective Amygdalohippocampectomy ◽  
Significant Difference

OBJECTIVEThe aim of this study was to investigate long-term seizure outcome, rate of reoperation, and postoperative neuropsychological performance following selective amygdalohippocampectomy (SelAH) or anterior temporal lobectomy (ATL) in pediatric patients with medically refractory temporal lobe epilepsy (TLE).METHODSThe authors performed a retrospective review of cases of medically refractory pediatric TLE treated initially with either SelAH or ATL. Standardized pre- and postoperative evaluation included seizure charting, surface and long-term video-electroencephalography, 1.5-T MRI, and neuropsychological testing.RESULTSA total of 79 patients treated initially with SelAH (n = 18) or ATL (n = 61) were included in this study, with a mean follow-up of 5.3 ± 4 years (range 1–16 years). The patients’ average age at initial surgery was 10.6 ± 5 years, with an average surgical delay of 5.7 ± 4 years between seizure onset and surgery. Seizure freedom (Engel I) following the initial operation was significantly more likely following ATL (47/61, 77%) than SelAH (8/18, 44%; p = 0.017, Fisher’s exact test). There was no statistically significant difference in the proportion of patients with postoperative neuropsychological deficits following SelAH (8/18, 44%) or ATL (21/61, 34%). However, reoperation was significantly more likely following SelAH (8/18, 44%) than after ATL (7/61, 11%; p = 0.004) and was more likely to result in Engel I outcome for ATL after failed SelAH (7/8, 88%) than for posterior extension after failed ATL (1/7, 14%; p = 0.01). Reoperation was well tolerated without significant neuropsychological deterioration. Ultimately, including 15 reoperations, 58 of 79 (73%) patients were free from disabling seizures at the most recent follow-up.CONCLUSIONSSelAH among pediatric patients with medically refractory unilateral TLE yields significantly worse rates of seizure control compared with ATL. Reoperation is significantly more likely following SelAH, is not associated with incremental neuropsychological deterioration, and frequently results in freedom from disabling seizures. These results are significant in that they argue against using SelAH for pediatric TLE surgery.

scholarly journals Mesial temporal lobe epilepsy: long-term seizure outcome of patients primarily treated with transsylvian selective amygdalohippocampectomy

2018 ◽  
Vol 129 (1) ◽  
pp. 174-181 ◽  
Author(s):  
Christian Dorfer ◽  
Thomas Czech ◽  
Susanne Aull-Watschinger ◽  
Christoph Baumgartner ◽  
Rebekka Jung ◽  
...  
Keyword(s):  
Temporal Lobe Epilepsy ◽  
Temporal Lobe ◽  
Mesial Temporal Lobe Epilepsy ◽  
Class I ◽  
Seizure Outcome ◽  
Selective Amygdalohippocampectomy ◽  
Class 1 ◽  
Mesial Temporal Lobe

OBJECTIVEThe aim of this study was to present long-term seizure outcome data in a consecutive series of patients with refractory mesial temporal lobe epilepsy primarily treated with transsylvian selective amygdalohippocampectomy (SAHE).METHODSThe authors retrospectively analyzed prospectively collected data for all patients who had undergone resective surgery for medically refractory epilepsy at their institution between July 1994 and December 2014. Seizure outcome was assessed according to the International League Against Epilepsy (ILAE) and the Engel classifications.RESULTSThe authors performed an SAHE in 158 patients (78 males, 80 females; 73 right side, 85 left side) with a mean age of 37.1 ± 10.0 years at surgery. Four patients lost to follow-up and 1 patient who committed suicide were excluded from analysis. The mean follow-up period was 9.7 years. At the last available follow-up (or before reoperation), 68 patients (44.4%) had achieved an outcome classified as ILAE Class 1a, 46 patients (30.1%) Class 1, 6 patients (3.9%) Class 2, 16 patients (10.4%) Class 3, 15 patients (9.8%) Class 4, and 2 patients (1.3%) Class 5. These outcomes correspond to Engel Class I in 78.4% of the patients, Engel Class II in 10.5%, Engel Class III in 8.5%, and Engel Class IV in 2.0%. Eleven patients underwent a second surgery (anterior temporal lobectomy) after a mean of 4.4 years from the SAHE (left side in 6 patients, right side in 5). Eight (72.7%) of these 11 patients achieved seizure freedom.The overall ILEA seizure outcome since (re)operation after a mean follow-up of 10.0 years was Class 1a in 72 patients (47.0%), Class 1 in 50 patients (32.6%), Class 2 in 7 patients (4.6%), Class 3 in 15 patients (9.8%), Class 4 in 8 patients (5.2%), and Class 5 in 1 patient (0.6%). These outcomes correspond to an Engel Class I outcome in 84.3% of the patients.CONCLUSIONSA satisfactory long-term seizure outcome following transsylvian SAHE was demonstrated in a selected group of patients with refractory temporal lobe epilepsy.

Selective amygdalohippocampectomy via the transsylvian approach

2008 ◽  
Vol 25 (3) ◽  
pp. E5 ◽  
Author(s):  
Badih Adada
Keyword(s):  
Visual Field ◽  
Temporal Lobe Epilepsy ◽  
Temporal Lobe ◽  
Seizure Control ◽  
Temporal Lobectomy ◽  
Surgical Approaches ◽  
Neuropsychological Outcome ◽  
Transsylvian Approach ◽  
Selective Amygdalohippocampectomy ◽  
Established Treatment

Surgery is an established treatment for temporal lobe epilepsy refractory to medication. Several surgical approaches have been used to treat this condition including temporal lobectomy, transcortical selective amygdalohippocampectomy, subtemporal amygdalohippocampectomy, and transsylvian amygdalohippocampectomy. In this article the author reviews the transsylvian amygdalohyppocampectomy and pertinent anatomy. He also discusses the procedure's results with regard to seizure control, neuropsychological outcome, and visual field preservation.

scholarly journals Neurocognitive and Seizure Outcomes of Selective Amygdalohippocampectomy versus Anterior Temporal Lobectomy for Mesial Temporal Lobe Epilepsy

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Alireza Mansouri ◽  
Aria Fallah ◽  
Mary Pat McAndrews ◽  
Melanie Cohn ◽  
Diana Mayor ◽  
...  
Keyword(s):  
Temporal Lobe Epilepsy ◽  
Temporal Lobe ◽  
Mesial Temporal Lobe Epilepsy ◽  
Temporal Lobectomy ◽  
Anterior Temporal Lobectomy ◽  
Selective Amygdalohippocampectomy ◽  
Significant Difference ◽  
Mesial Temporal Lobe ◽  
Neuropsychological Outcomes

Objective. To report our institutional seizure and neuropsychological outcomes for a series of patients with mesial temporal lobe epilepsy (mTLE) undergoing anterior temporal lobectomy (ATL) or selective amygdalohippocampectomy (SelAH) between 2004 and 2011. Methods. A retrospective study of patients with mTLE was conducted. Seizure outcome was reported using time-to-event analysis. Cognitive outcome was reported using the change principal in component factor scores, one each, for intellectual abilities, visuospatial memory, and verbal memory. The Boston Naming Test was used for naming assessment. Language dominant and nondominant resections were compared separately. Student’s t-test was used to assess statistical significance. Results. Ninety-six patients (75 ATL, 21 SelAH) were included; fifty-four had complete neuropsychological follow-up. Median follow-up was 40.5 months. There was no statistically significant difference in seizure freedom or any of the neuropsychological outcomes, although there was a trend toward greater postoperative decline in naming in the dominant hemisphere group following ATL. Conclusion. Seizure and neuropsychological outcomes did not differ for the two surgical approaches which is similar to most prior studies. Given the theoretical possibility of SelAH sparing language function in patients with epilepsy secondary to mesial temporal sclerosis and the limited high-quality evidence creating equipoise, a multicenter randomized clinical trial is warranted.

scholarly journals Surgical treatment of Temporal Lobe Epilepsy: comparative results of selective amygdalohippocampectomy versus anterior temporal lobectomy from a referral center in Brazil

2021 ◽  
Author(s):  
Laryssa C Azevedo Almeida ◽  
Vanessa Alves Lobato ◽  
Maria do Carmo Vasconcelos Santos ◽  
Aline Curcio de Moraes ◽  
Bruno Silva Costa
Keyword(s):  
Data Analysis ◽  
Surgical Technique ◽  
Temporal Lobe Epilepsy ◽  
Temporal Lobe ◽  
Seizure Control ◽  
Temporal Lobectomy ◽  
Anterior Temporal Lobectomy ◽  
Selective Amygdalohippocampectomy ◽  
Belo Horizonte

Abstract IntroductionTemporal Lobe Epilepsy (TLE) is a high prevalence neurological disorder and tends to drug refractoriness. Surgery has emerged as a promising treatment for managing crises and a better quality of life for these patients. The objective of this work is to compare the surgical results in terms of seizures control concerning the surgical technique performed (Anterior temporal lobectomy (ATL) vs. Selective amygdalohippocampectomy (SAH)) in a cohort of 132 patients operated in an epilepsy reference center.Materials and methodsWe performed a retrospective study based on the review of medical records of 146 patients operated for TLE from 2008 to 2019 at the Santa Casa de Misericordia in Belo Horizonte, Brazil. Initially, 13 patients were excluded from the study due to insufficient medical record data or follow-up loss. We used the ILAE (International League Against Epilepsy) scale to classify seizure control after surgery. We compared the surgical groups using the survival and Kaplan-Maier curves.ResultsA total of 132 patients were evaluated in this study, with a mean follow-up time after surgery of 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% vs. 31%) and a higher rate of satisfactory seizure control (88,6% vs. 69,3%) p =0.006.ConclusionThe literature is still controversial about seizure control results concerning the surgical technique used due to the lack of studies with a robust methodology for an adequate comparison. In our data analysis, we identified the superiority of ATL over SAH in seizure outcomes.

scholarly journals Anterior temporal lobectomy versus selective amygdalohippocampectomy in patients with mesial temporal lobe epilepsy

2015 ◽  
Vol 74 (1) ◽  
pp. 35-43 ◽  
Author(s):  
Fábio A. Nascimento ◽  
Luana Antunes Maranha Gatto ◽  
Carlos Silvado ◽  
Maria Joana Mäder-Joaquim ◽  
Marlus Sidney Moro ◽  
...  
Keyword(s):  
Temporal Lobe Epilepsy ◽  
Temporal Lobe ◽  
Mesial Temporal Lobe Epilepsy ◽  
Temporal Lobectomy ◽  
Mesial Temporal Sclerosis ◽  
Anterior Temporal Lobectomy ◽  
Selective Amygdalohippocampectomy ◽  
Significant Difference ◽  
Mesial Temporal Lobe ◽  
Neuropsychological Outcomes

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.

Reassessing the impact of intraoperative electrocorticography on postoperative outcome of patients undergoing standard temporal lobectomy for MRI-negative temporal lobe epilepsy

2020 ◽  
Vol 132 (2) ◽  
pp. 605-614 ◽  
Author(s):  
Sanjeet S. Grewal ◽  
Mohammed Ali Alvi ◽  
William J. Perkins ◽  
Gregory D. Cascino ◽  
Jeffrey W. Britton ◽  
...  
Keyword(s):  
Temporal Lobe Epilepsy ◽  
Temporal Lobe ◽  
Univariate Analysis ◽  
Temporal Lobectomy ◽  
Seizure Outcome ◽  
Incomplete Resection ◽  
Seizure Recurrence ◽  
Cox Regression Analysis ◽  
Epileptiform Discharges ◽  
The Impact

OBJECTIVEAlmost 30% of the patients with suspected temporal lobe epilepsy (TLE) have normal results on MRI. Success rates for resection of MRI-negative TLE are less favorable, ranging from 36% to 76%. Herein the authors describe the impact of intraoperative electrocorticography (ECoG) augmented by opioid activation and its effect on postoperative seizure outcome.METHODSAdult and pediatric patients with medically resistant MRI-negative TLE who underwent standardized ECoG at the time of their elective anterior temporal lobectomy (ATL) with amygdalohippocampectomy between 1990 and 2016 were included in this study. Seizure recurrence comprised the primary outcome of interest and was assessed using Kaplan-Meier and multivariable Cox regression analysis plots based on distribution of interictal epileptiform discharges (IEDs) recorded on scalp electroencephalography, baseline and opioid-induced IEDs on ECoG, and extent of resection.RESULTSOf the 1144 ATLs performed at the authors’ institution between 1990 and 2016, 127 (11.1%) patients (81 females) with MRI-negative TLE were eligible for this study. Patients with complete resection of tissue generating IED recorded on intraoperative ECoG were less likely to have seizure recurrence compared to those with incomplete resection on univariate analysis (p < 0.05). No difference was found in seizure recurrence between patients with bilateral independent IEDs and unilateral IEDs (p = 0.15), presence or absence of opioid-induced epileptiform activation (p = 0.61), or completeness of resection of tissue with opioid-induced IEDs on intraoperative ECoG (p = 0.41).CONCLUSIONSThe authors found that incomplete resection of IED-generating tissue on intraoperative ECoG was associated with an increased chance of seizure recurrence. However, they found that induction of epileptiform activity with intraoperative opioid activation did not provide useful intraoperative data predictive of improving operative results for temporal lobectomy in MRI-negative epilepsy.

Seizure and memory outcome following temporal lobe surgery: selective compared with nonselective approaches for hippocampal sclerosis

2006 ◽  
Vol 104 (1) ◽  
pp. 70-78 ◽  
Author(s):  
Eliseu Paglioli ◽  
André Palmini ◽  
Mirna Portuguez ◽  
Eduardo Paglioli ◽  
Ney Azambuja ◽  
...  
Keyword(s):  
Temporal Lobe ◽  
Verbal Memory ◽  
Seizure Control ◽  
Hippocampal Sclerosis ◽  
Surgical Techniques ◽  
Mesial Temporal Lobe Epilepsy ◽  
Outcome Data ◽  
Temporal Lobectomy ◽  
Selective Amygdalohippocampectomy

Object The aim of this study was to compare seizure and memory outcome in patients with medically refractory mesial temporal lobe epilepsy due to hippocampal sclerosis (MTLE/HS) treated using an anterior temporal lobectomy (ATL) or a selective amygdalohippocampectomy (SA). Methods Surgical outcome data were prospectively collected for 2 to 11 years in 161 consecutive patients with MTLE/HS. Eighty patients underwent an ATL and 81 an SA. Seizure control achieved with each technique was compared using the Engel classification scheme. Postoperative memory testing was performed in 86 patients (53%). At the last follow up, 72% of the patients who had undergone an ATL (mean follow up 6.7 years) and 71% of those who had undergone an SA (mean follow up 4.5 years) were seizure free (Engle Class IA). Estimated survival in patients in Engel Classes I, IA, and I and II combined did not differ between the two surgical techniques. Preoperatively, 58% of the patients had verbal memory scores one standard deviation (SD) below the normal mean. One third of the patients with preoperative scores in the normal range worsened after surgery, although this outcome was not related to the surgical technique. In contrast, one third of those whose preoperative scores were less than −1 SD experienced improvement after surgery. Nine (18%) of the 50 patients whose left side had been surgically treated improved their verbal memory scores by more than one SD. Seven (78%) of these nine underwent an SA (p = 0.05). Conclusions Both ATL and SA can lead to similar favorable seizure control in patients with MTLE/HS. Preliminary data suggest that postoperative verbal memory scores may improve in patients who undergo selective resection of a sclerotic hippocampus in the dominant temporal lobe.

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