Neel H Mehta, Eduardo A Maury, Zachary Buller, Phan Q Duy, Carla Fortes, Seth L Alper, E Zeynep Erson-Omay, Kristopher T Kahle
Idiopathic normal pressure hydrocephalus (iNPH) is characterized by dilation of the cerebral ventricles without increased cerebral pressure. Patients typically present with cognitive impairment, gait abnormalities, and urinary incontinence. Despite current guidelines for diagnosis and surgical intervention, there is little consensus on the pathophysiology of iNPH. Familial cases and genomic studies of iNPH have recently suggested an underappreciated role of genetics in disease pathogenesis, implicating mechanisms ranging from dysregulated CSF dynamics to underlying neurodegenerative or neuroinflammatory processes. In this paper, the authors provide a brief review of genetic insights and candidate genes for iNPH, highlighting the continued importance of integrated genetic analysis and clinical studies to advance iNPH management.
{"title":"Genetics and molecular pathophysiology of normal pressure hydrocephalus.","authors":"Neel H Mehta, Eduardo A Maury, Zachary Buller, Phan Q Duy, Carla Fortes, Seth L Alper, E Zeynep Erson-Omay, Kristopher T Kahle","doi":"10.3171/2024.5.JNS24980","DOIUrl":"https://doi.org/10.3171/2024.5.JNS24980","url":null,"abstract":"<p><p>Idiopathic normal pressure hydrocephalus (iNPH) is characterized by dilation of the cerebral ventricles without increased cerebral pressure. Patients typically present with cognitive impairment, gait abnormalities, and urinary incontinence. Despite current guidelines for diagnosis and surgical intervention, there is little consensus on the pathophysiology of iNPH. Familial cases and genomic studies of iNPH have recently suggested an underappreciated role of genetics in disease pathogenesis, implicating mechanisms ranging from dysregulated CSF dynamics to underlying neurodegenerative or neuroinflammatory processes. In this paper, the authors provide a brief review of genetic insights and candidate genes for iNPH, highlighting the continued importance of integrated genetic analysis and clinical studies to advance iNPH management.</p>","PeriodicalId":16505,"journal":{"name":"Journal of neurosurgery","volume":" ","pages":"1-7"},"PeriodicalIF":3.5,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142043954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mohammad Anadani, Benjamin Gory, Jean-Marc Olivot, Romain Bourcier, Arturo Consoli, Grégoire Boulouis, Kevin Janot, Raoul Pop, Jean-Philippe Desilles, Lina Hamoud, Mikael Mazighi, Bertrand Lapergue, Gaultier Marnat, Stefanos Finitsis
Objective: Identifying the optimal anesthetic technique for mechanical thrombectomy (MT) remains an unresolved issue. Prior research has not considered the influence of occlusion site when comparing general anesthesia (GA) with non-GA. This study evaluates the differential impacts of the anesthetic technique (GA vs non-GA) on outcomes according to the location of occlusion.
Methods: This is a retrospective analysis of the ETIS (Endovascular Treatment in Ischemic Stroke) registry. Patients with anterior circulation large-vessel occlusion treated with MT were included. Patients were divided into groups according to the location of occlusion. Inverse propensity score weighting analysis was used.
Results: Among 2783 patients included in the propensity score analysis, 669 (24%) received GA. In the total cohort, GA was not associated with favorable outcome, excellent outcome, successful reperfusion, or complete reperfusion. GA was associated with higher odds of parenchymal hemorrhage (OR 1.42, 95% 1.05-1.92) but not symptomatic intracranial hemorrhage. GA was associated with Alberta Stroke Program Early CT Score progression (OR 1.36, 95% CI 1.11-1.68). In the internal carotid artery occlusion group, GA was associated with higher odds of mortality (OR 1.94, 95% CI 1.15-3.27). In the M1 group, GA was associated with lower odds of complications (OR 0.41, 95% CI 0.19-0.92). In the M2 group, GA was associated with successful reperfusion (OR 2.79, 95% CI 1.02-7.64). In addition, the complication rate was lower with GA (2.7% vs 7%), although the association was not significant in adjusted analysis.
Conclusions: While GA and non-GA techniques did not differ significantly in functional outcomes, the influence of GA on angiographic and procedural safety outcomes was location dependent, underscoring the importance of a tailored anesthesia technique in MT procedures.
目的:确定机械血栓切除术(MT)的最佳麻醉技术仍是一个悬而未决的问题。之前的研究在比较全身麻醉(GA)与非全身麻醉时并未考虑闭塞部位的影响。本研究评估了麻醉技术(GA 与非 GA)根据闭塞部位对结果的不同影响:这是一项对 ETIS(缺血性卒中的血管内治疗)登记的回顾性分析。研究纳入了接受 MT 治疗的前循环大血管闭塞患者。根据闭塞位置将患者分为几组。采用反倾向评分加权分析:在纳入倾向得分分析的2783名患者中,有669人(24%)接受了GA治疗。在所有队列中,GA 与良好预后、出色预后、成功再灌注或完全再灌注无关。GA与较高的实质出血几率相关(OR 1.42,95% 1.05-1.92),但与症状性颅内出血无关。GA与阿尔伯塔省卒中计划早期CT评分进展有关(OR 1.36,95% CI 1.11-1.68)。在颈内动脉闭塞组,GA 与较高的死亡几率相关(OR 1.94,95% CI 1.15-3.27)。在 M1 组,GA 与较低的并发症几率相关(OR 0.41,95% CI 0.19-0.92)。在 M2 组,GA 与再灌注成功率相关(OR 2.79,95% CI 1.02-7.64)。此外,GA的并发症发生率较低(2.7% vs 7%),但在调整分析中相关性并不显著:结论:虽然GA和非GA技术在功能结果上没有显著差异,但GA对血管造影和手术安全性结果的影响取决于手术部位,这强调了在MT手术中采用量身定制的麻醉技术的重要性。
{"title":"The impact of general anesthesia versus non-general anesthesia on thrombectomy outcomes by occlusion location: insights from the ETIS registry.","authors":"Mohammad Anadani, Benjamin Gory, Jean-Marc Olivot, Romain Bourcier, Arturo Consoli, Grégoire Boulouis, Kevin Janot, Raoul Pop, Jean-Philippe Desilles, Lina Hamoud, Mikael Mazighi, Bertrand Lapergue, Gaultier Marnat, Stefanos Finitsis","doi":"10.3171/2024.5.JNS24199","DOIUrl":"https://doi.org/10.3171/2024.5.JNS24199","url":null,"abstract":"<p><strong>Objective: </strong>Identifying the optimal anesthetic technique for mechanical thrombectomy (MT) remains an unresolved issue. Prior research has not considered the influence of occlusion site when comparing general anesthesia (GA) with non-GA. This study evaluates the differential impacts of the anesthetic technique (GA vs non-GA) on outcomes according to the location of occlusion.</p><p><strong>Methods: </strong>This is a retrospective analysis of the ETIS (Endovascular Treatment in Ischemic Stroke) registry. Patients with anterior circulation large-vessel occlusion treated with MT were included. Patients were divided into groups according to the location of occlusion. Inverse propensity score weighting analysis was used.</p><p><strong>Results: </strong>Among 2783 patients included in the propensity score analysis, 669 (24%) received GA. In the total cohort, GA was not associated with favorable outcome, excellent outcome, successful reperfusion, or complete reperfusion. GA was associated with higher odds of parenchymal hemorrhage (OR 1.42, 95% 1.05-1.92) but not symptomatic intracranial hemorrhage. GA was associated with Alberta Stroke Program Early CT Score progression (OR 1.36, 95% CI 1.11-1.68). In the internal carotid artery occlusion group, GA was associated with higher odds of mortality (OR 1.94, 95% CI 1.15-3.27). In the M1 group, GA was associated with lower odds of complications (OR 0.41, 95% CI 0.19-0.92). In the M2 group, GA was associated with successful reperfusion (OR 2.79, 95% CI 1.02-7.64). In addition, the complication rate was lower with GA (2.7% vs 7%), although the association was not significant in adjusted analysis.</p><p><strong>Conclusions: </strong>While GA and non-GA techniques did not differ significantly in functional outcomes, the influence of GA on angiographic and procedural safety outcomes was location dependent, underscoring the importance of a tailored anesthesia technique in MT procedures.</p>","PeriodicalId":16505,"journal":{"name":"Journal of neurosurgery","volume":" ","pages":"1-9"},"PeriodicalIF":3.5,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142043971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-23DOI: 10.3171/2024.5.JNS241160
Colby T Joncas, Guy M McKhann, Raymond F Sekula
{"title":"Letter to the Editor. Concerning transposition for microvascular decompression in trigeminal neuralgia.","authors":"Colby T Joncas, Guy M McKhann, Raymond F Sekula","doi":"10.3171/2024.5.JNS241160","DOIUrl":"10.3171/2024.5.JNS241160","url":null,"abstract":"","PeriodicalId":16505,"journal":{"name":"Journal of neurosurgery","volume":" ","pages":"1451-1452"},"PeriodicalIF":3.5,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142043968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-23DOI: 10.3171/2024.6.JNS241281
Ning Wang, Shuo Yang, Xiaodan Huang
{"title":"Letter to the Editor. VR-assisted medical education: combining traditional and innovative methods.","authors":"Ning Wang, Shuo Yang, Xiaodan Huang","doi":"10.3171/2024.6.JNS241281","DOIUrl":"https://doi.org/10.3171/2024.6.JNS241281","url":null,"abstract":"","PeriodicalId":16505,"journal":{"name":"Journal of neurosurgery","volume":" ","pages":"1-2"},"PeriodicalIF":3.5,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142043969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Victor Gabriel El-Hajj, Abdul Karim Ghaith, Harry Hoang, Ryan H Nguyen, Neil Nazar Al-Saidi, Stephen P Graepel, Elias Atallah, Adrian Elmi-Terander, Eric J Lehrer, Paul D Brown, Mohamad Bydon
Objective: Chordomas are rare tumors that originate from undifferentiated remnants of the notochord. Currently, there are no established guidelines regarding the choice of adjuvant radiation modality for patients surgically treated for chordomas. Using a nationwide, multicenter database, the authors aimed to compare long-term survival outcomes associated with the use of proton or photon adjuvant therapy for the management of chordomas of skull base and spine.
Methods: The National Cancer Database (NCDB) was queried for chordoma cases from 2004 to 2017. Patient, tumor, and treatment characteristics were extracted from the database. The primary outcome was overall survival (OS). Kaplan-Meier survival analyses were conducted to investigate differences in outcome on propensity score-matched cohorts of patients treated with proton or photon adjuvant radiotherapy.
Results: Of the 3490 patients available, 424 met the inclusion criteria for this study. In the prematching analysis, patients receiving adjuvant photon therapy were significantly older (median age 57.0 vs 45.0 years, p < 0.001) and were more commonly male (61% vs 43%, p < 0.001) compared with those receiving proton therapy. Races were equally distributed among radiotherapy modalities (p = 0.64). Patients with chordomas of the mobile spine or sacrum were less likely to receive proton compared with photon therapy (37% vs 58%). Patients receiving proton therapy were more often represented among private insurance holders (69% vs 52%, p < 0.001) as well as in the highest income quartile (52% vs 40%, p = 0.008). Patients traveled farther to receive proton, as opposed to photon, therapy (median 59.0 vs 34.9 miles, p < 0.001). On postmatching Kaplan-Meier analysis encompassing all chordoma cases, no difference in OS between photon and proton therapy was revealed (HR 0.75, 95% CI 0.39-1.44; p = 0.39). A Kaplan-Meier analysis only including patients with skull base chordomas reached similar results (HR 0.83, 95% CI 0.31-2.22; p = 0.71). In patients with spine chordomas, however, a significant difference was found, as proton therapy exhibited a superior OS over photon therapy (HR 0.28, 95% CI 0.09-0.81; p = 0.012).
Conclusions: Based on this nationwide analysis, patients with private insurance and higher income were more likely to receive proton adjuvant radiotherapy, while those with spinal or sacral chordomas were less likely to receive this modality. Despite this disparity, an OS benefit was observed in patients with chordomas of the spine and sacrum who received adjuvant proton therapy, in comparison with a matched cohort of patients treated with photon therapy. Conversely, this advantageous outcome was not evident in cases of chordomas located at the skull base.
{"title":"Impact of proton versus photon adjuvant radiotherapy on overall survival in the management of skull base and spinal chordomas: a National Cancer Database analysis.","authors":"Victor Gabriel El-Hajj, Abdul Karim Ghaith, Harry Hoang, Ryan H Nguyen, Neil Nazar Al-Saidi, Stephen P Graepel, Elias Atallah, Adrian Elmi-Terander, Eric J Lehrer, Paul D Brown, Mohamad Bydon","doi":"10.3171/2024.5.JNS24511","DOIUrl":"https://doi.org/10.3171/2024.5.JNS24511","url":null,"abstract":"<p><strong>Objective: </strong>Chordomas are rare tumors that originate from undifferentiated remnants of the notochord. Currently, there are no established guidelines regarding the choice of adjuvant radiation modality for patients surgically treated for chordomas. Using a nationwide, multicenter database, the authors aimed to compare long-term survival outcomes associated with the use of proton or photon adjuvant therapy for the management of chordomas of skull base and spine.</p><p><strong>Methods: </strong>The National Cancer Database (NCDB) was queried for chordoma cases from 2004 to 2017. Patient, tumor, and treatment characteristics were extracted from the database. The primary outcome was overall survival (OS). Kaplan-Meier survival analyses were conducted to investigate differences in outcome on propensity score-matched cohorts of patients treated with proton or photon adjuvant radiotherapy.</p><p><strong>Results: </strong>Of the 3490 patients available, 424 met the inclusion criteria for this study. In the prematching analysis, patients receiving adjuvant photon therapy were significantly older (median age 57.0 vs 45.0 years, p < 0.001) and were more commonly male (61% vs 43%, p < 0.001) compared with those receiving proton therapy. Races were equally distributed among radiotherapy modalities (p = 0.64). Patients with chordomas of the mobile spine or sacrum were less likely to receive proton compared with photon therapy (37% vs 58%). Patients receiving proton therapy were more often represented among private insurance holders (69% vs 52%, p < 0.001) as well as in the highest income quartile (52% vs 40%, p = 0.008). Patients traveled farther to receive proton, as opposed to photon, therapy (median 59.0 vs 34.9 miles, p < 0.001). On postmatching Kaplan-Meier analysis encompassing all chordoma cases, no difference in OS between photon and proton therapy was revealed (HR 0.75, 95% CI 0.39-1.44; p = 0.39). A Kaplan-Meier analysis only including patients with skull base chordomas reached similar results (HR 0.83, 95% CI 0.31-2.22; p = 0.71). In patients with spine chordomas, however, a significant difference was found, as proton therapy exhibited a superior OS over photon therapy (HR 0.28, 95% CI 0.09-0.81; p = 0.012).</p><p><strong>Conclusions: </strong>Based on this nationwide analysis, patients with private insurance and higher income were more likely to receive proton adjuvant radiotherapy, while those with spinal or sacral chordomas were less likely to receive this modality. Despite this disparity, an OS benefit was observed in patients with chordomas of the spine and sacrum who received adjuvant proton therapy, in comparison with a matched cohort of patients treated with photon therapy. Conversely, this advantageous outcome was not evident in cases of chordomas located at the skull base.</p>","PeriodicalId":16505,"journal":{"name":"Journal of neurosurgery","volume":" ","pages":"1-9"},"PeriodicalIF":3.5,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142043967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Objective: Treatment with immune checkpoint inhibitors (ICIs) has shown clinical benefit for a wide range of cancer types. The neutrophil-to-lymphocyte ratio (NLR) reportedly correlates with survival time or progression-free survival in patients treated with ICIs. However, NLR has not yet been assessed in patients with brain metastases (BMs) receiving stereotactic radiosurgery (SRS) combined with concurrent ICIs. The authors investigated the predictive impact of NLR on the survival data of patients with BMs who received SRS with concurrent ICIs.
Methods: The clinical records of patients who had undergone SRS with concurrent ICIs for BMs between January 2015 and August 2023 were retrospectively analyzed. NLR was calculated using the data obtained from the last examination prior to SRS. The optimal NLR cutoff value was identified by receiver operating characteristic (ROC) curve analysis for time-to-event data (overall survival [OS] ≤ 18 months). OS and intracranial disease progression-free survival (IC-PFS) rates were compared between the two NLR groups.
Results: Of the 185 eligible patients included, 132 were male. The median (IQR) patient age was 69 (61-75) years. The primary cancers were lung, genitourinary, skin, breast, gastrointestinal, and others in 132, 23, 22, 2, 2, and 4 patients, respectively. The post-SRS median OS and IC-PFS times for the entire cohort were 18.4 (95% CI 14.0-23.1) months and 9.2 (95% CI 6.9-10.8) months, respectively. ROC curve analysis identified the optimal NLR cutoff value for 18-month OS to be 5.0 (area under the curve 0.64, Youden index 0.31). Kaplan-Meier analysis revealed that patients with high NLR (> 5) had a significantly shorter OS (median survival time 10.9 months for 48 patients vs 22.2 months for 137 patients, HR 2.0, 95% CI 1.3-3.0, p < 0.001). Similarly, a significant difference in median IC-PFS was noted: 4.8 months with high NLR versus 10.7 months with low NLR (HR 1.7, 95% CI 1.2-2.5, p = 0.003).
Conclusions: The authors found elevated pre-SRS NLR (> 5) to be associated with shorter OS and IC-PFS after SRS with concurrent ICIs for BMs. NLR is a simple, cost-effective, and widely accessible biomarker, which can thus be used for managing patients with BMs receiving SRS concurrently with ICIs. Further investigation in other large datasets is, however, required to validate these findings.
{"title":"Pre-stereotactic radiosurgery neutrophil-to-lymphocyte ratio predicts post-stereotactic radiosurgery survival of patients with brain metastases concurrently treated with immune checkpoint inhibitors.","authors":"Shoji Yomo, Kyota Oda, Kazuhiro Oguchi","doi":"10.3171/2024.5.JNS24259","DOIUrl":"https://doi.org/10.3171/2024.5.JNS24259","url":null,"abstract":"<p><strong>Objective: </strong>Treatment with immune checkpoint inhibitors (ICIs) has shown clinical benefit for a wide range of cancer types. The neutrophil-to-lymphocyte ratio (NLR) reportedly correlates with survival time or progression-free survival in patients treated with ICIs. However, NLR has not yet been assessed in patients with brain metastases (BMs) receiving stereotactic radiosurgery (SRS) combined with concurrent ICIs. The authors investigated the predictive impact of NLR on the survival data of patients with BMs who received SRS with concurrent ICIs.</p><p><strong>Methods: </strong>The clinical records of patients who had undergone SRS with concurrent ICIs for BMs between January 2015 and August 2023 were retrospectively analyzed. NLR was calculated using the data obtained from the last examination prior to SRS. The optimal NLR cutoff value was identified by receiver operating characteristic (ROC) curve analysis for time-to-event data (overall survival [OS] ≤ 18 months). OS and intracranial disease progression-free survival (IC-PFS) rates were compared between the two NLR groups.</p><p><strong>Results: </strong>Of the 185 eligible patients included, 132 were male. The median (IQR) patient age was 69 (61-75) years. The primary cancers were lung, genitourinary, skin, breast, gastrointestinal, and others in 132, 23, 22, 2, 2, and 4 patients, respectively. The post-SRS median OS and IC-PFS times for the entire cohort were 18.4 (95% CI 14.0-23.1) months and 9.2 (95% CI 6.9-10.8) months, respectively. ROC curve analysis identified the optimal NLR cutoff value for 18-month OS to be 5.0 (area under the curve 0.64, Youden index 0.31). Kaplan-Meier analysis revealed that patients with high NLR (> 5) had a significantly shorter OS (median survival time 10.9 months for 48 patients vs 22.2 months for 137 patients, HR 2.0, 95% CI 1.3-3.0, p < 0.001). Similarly, a significant difference in median IC-PFS was noted: 4.8 months with high NLR versus 10.7 months with low NLR (HR 1.7, 95% CI 1.2-2.5, p = 0.003).</p><p><strong>Conclusions: </strong>The authors found elevated pre-SRS NLR (> 5) to be associated with shorter OS and IC-PFS after SRS with concurrent ICIs for BMs. NLR is a simple, cost-effective, and widely accessible biomarker, which can thus be used for managing patients with BMs receiving SRS concurrently with ICIs. Further investigation in other large datasets is, however, required to validate these findings.</p>","PeriodicalId":16505,"journal":{"name":"Journal of neurosurgery","volume":" ","pages":"1-10"},"PeriodicalIF":3.5,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142043970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Objective: The objective of this study was to display the anatomical landmarks, surgical technique, and clinical outcome of transsylvian transopercular peri-central core hemispherotomy (TTPH) for treating refractory epilepsy.
Methods: From 2011 to 2023, 26 patients (12 with Rasmussen syndrome, 8 with hemimegalencephaly/cortical malformations, and 6 with hypoxic-ischemic encephalopathy; mean [range] age 11.3 years [16 months to 35 years]; 13 females; and 13 with right-side pathology) underwent TTPH. The mean (range) follow-up was 88 (14-156) months. The intradural surgical time, use and amount of blood transfusion, postoperative fever, hospital stay, weight at surgery, and seizure onset to surgery interval are reported.
Results: TTPH consists of 1) sylvian fissure opening, 2) coagulation of the M2 and M3 branches, 3) frontoparietal opercula removal, 4) suprainsular resection, 5) insula removal, 6) selective amygdalohippocampectomy, 7) disconnection of the posterior temporal and occipital lobes using the tentorium and falx as landmarks, 8) intraventricular callosotomy, and 9) disconnection of the basal frontal lobe. In cortical malformation, the gray-white matter interface serves as a landmark. The average intradural operating time was 7 hours 18 minutes (3 hours 33 minutes to 13 hours 45 minutes); all patients were Engel class I; and 2 patients presented with procedure-related complications (meningitis and transient abducens nerve palsy). No patient required shunt surgery or reoperation.
Conclusions: TTPH offers anatomical landmarks as intraoperative guides and has achieved good seizure control and low complication rates.
{"title":"Transsylvian transopercular peri-central core hemispherotomy for treating epilepsy: anatomy, surgical technique, and clinical outcome.","authors":"Hung Tzu Wen, Márcio Luis Soares Ferreira, Davi Jorge Fontoura Solla, Luiz Henrique Martins Castro, Manoel Jacobsen Teixeira, Carlos Gilberto Carlotti","doi":"10.3171/2024.4.JNS24862","DOIUrl":"https://doi.org/10.3171/2024.4.JNS24862","url":null,"abstract":"<p><strong>Objective: </strong>The objective of this study was to display the anatomical landmarks, surgical technique, and clinical outcome of transsylvian transopercular peri-central core hemispherotomy (TTPH) for treating refractory epilepsy.</p><p><strong>Methods: </strong>From 2011 to 2023, 26 patients (12 with Rasmussen syndrome, 8 with hemimegalencephaly/cortical malformations, and 6 with hypoxic-ischemic encephalopathy; mean [range] age 11.3 years [16 months to 35 years]; 13 females; and 13 with right-side pathology) underwent TTPH. The mean (range) follow-up was 88 (14-156) months. The intradural surgical time, use and amount of blood transfusion, postoperative fever, hospital stay, weight at surgery, and seizure onset to surgery interval are reported.</p><p><strong>Results: </strong>TTPH consists of 1) sylvian fissure opening, 2) coagulation of the M2 and M3 branches, 3) frontoparietal opercula removal, 4) suprainsular resection, 5) insula removal, 6) selective amygdalohippocampectomy, 7) disconnection of the posterior temporal and occipital lobes using the tentorium and falx as landmarks, 8) intraventricular callosotomy, and 9) disconnection of the basal frontal lobe. In cortical malformation, the gray-white matter interface serves as a landmark. The average intradural operating time was 7 hours 18 minutes (3 hours 33 minutes to 13 hours 45 minutes); all patients were Engel class I; and 2 patients presented with procedure-related complications (meningitis and transient abducens nerve palsy). No patient required shunt surgery or reoperation.</p><p><strong>Conclusions: </strong>TTPH offers anatomical landmarks as intraoperative guides and has achieved good seizure control and low complication rates.</p>","PeriodicalId":16505,"journal":{"name":"Journal of neurosurgery","volume":" ","pages":"1-11"},"PeriodicalIF":3.5,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141992306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Karl L Sangwon, Matthew Nguyen, Daniel D Wiggan, Bruck Negash, Daniel A Alber, Xujin Chris Liu, Albert Liu, Corinne Rabbin-Birnbaum, Vera Sharashidze, Jacob Baranoski, Eytan Raz, Maksim Shapiro, Caleb Rutledge, Peter Kim Nelson, Howard Riina, Jonathan Russin, Eric K Oermann, Erez Nossek
Objective: The objective of this study was to investigate the use of indocyanine green videoangiography with FLOW 800 hemodynamic parameters intraoperatively during superficial temporal artery-middle cerebral artery (STA-MCA) bypass surgery to predict patency prior to anastomosis performance.
Methods: A retrospective and exploratory data analysis was conducted using FLOW 800 software prior to anastomosis to assess four regions of interest (ROIs; proximal and distal recipients and adjacent and remote gyri) for four hemodynamic parameters (speed, delay, rise time, and time to peak). Medical records were used to classify patients into flow and no-flow groups based on immediate or perioperative anastomosis patency. Hemodynamic parameters were compared using univariate and multivariate analyses. Principal component analysis was used to identify high risk of no flow (HRnf) and low risk of no flow (LRnf) groups, correlated with prospective angiographic follow-ups. Machine learning models were fitted to predict patency using FLOW 800 features, and the a posteriori effect of complication risk of those features was computed.
Results: A total of 39 cases underwent STA-MCA bypass surgery with complete FLOW 800 data collection. Thirty-five cases demonstrated flow after anastomosis revascularization and were compared with 4 cases with no flow after revascularization. Proximal and distal recipient speeds were significantly different between the no-flow and flow groups (proximal: 238.3 ± 120.8 and 138.5 ± 93.6, respectively [p < 0.001]; distal: 241.0 ± 117.0 and 142.1 ± 103.8, respectively [p < 0.05]). Based on principal component analysis, the HRnf group (n = 10) was characterized by high-flow speed (> 75th percentile) in all ROIs, whereas the LRnf group (n = 10) had contrasting patterns. In prospective long-term follow-up, 6 of 9 cases in the HRnf group, including the original no-flow cases, had no or low flow, whereas 8 of 8 cases in the LRnf group maintained robust flow. Machine learning models predicted patency failure with a mean F1 score of 0.930 and consistently relied on proximal recipient speed as the most important feature. Computation of posterior likelihood showed a 95.29% chance of patients having long-term patency given a lower proximal speed.
Conclusions: These results suggest that a high proximal speed measured in the recipient vessel prior to anastomosis can elevate the risk of perioperative no flow and long-term reduction of flow. With an increased dataset size, continued FLOW 800-based ROI metric analysis could be used to guide intraoperative anastomosis site selection prior to anastomosis and predict patency outcome.
{"title":"Assessing superficial temporal artery-middle cerebral artery anastomosis patency using FLOW 800 hemodynamics.","authors":"Karl L Sangwon, Matthew Nguyen, Daniel D Wiggan, Bruck Negash, Daniel A Alber, Xujin Chris Liu, Albert Liu, Corinne Rabbin-Birnbaum, Vera Sharashidze, Jacob Baranoski, Eytan Raz, Maksim Shapiro, Caleb Rutledge, Peter Kim Nelson, Howard Riina, Jonathan Russin, Eric K Oermann, Erez Nossek","doi":"10.3171/2024.4.JNS24713","DOIUrl":"https://doi.org/10.3171/2024.4.JNS24713","url":null,"abstract":"<p><strong>Objective: </strong>The objective of this study was to investigate the use of indocyanine green videoangiography with FLOW 800 hemodynamic parameters intraoperatively during superficial temporal artery-middle cerebral artery (STA-MCA) bypass surgery to predict patency prior to anastomosis performance.</p><p><strong>Methods: </strong>A retrospective and exploratory data analysis was conducted using FLOW 800 software prior to anastomosis to assess four regions of interest (ROIs; proximal and distal recipients and adjacent and remote gyri) for four hemodynamic parameters (speed, delay, rise time, and time to peak). Medical records were used to classify patients into flow and no-flow groups based on immediate or perioperative anastomosis patency. Hemodynamic parameters were compared using univariate and multivariate analyses. Principal component analysis was used to identify high risk of no flow (HRnf) and low risk of no flow (LRnf) groups, correlated with prospective angiographic follow-ups. Machine learning models were fitted to predict patency using FLOW 800 features, and the a posteriori effect of complication risk of those features was computed.</p><p><strong>Results: </strong>A total of 39 cases underwent STA-MCA bypass surgery with complete FLOW 800 data collection. Thirty-five cases demonstrated flow after anastomosis revascularization and were compared with 4 cases with no flow after revascularization. Proximal and distal recipient speeds were significantly different between the no-flow and flow groups (proximal: 238.3 ± 120.8 and 138.5 ± 93.6, respectively [p < 0.001]; distal: 241.0 ± 117.0 and 142.1 ± 103.8, respectively [p < 0.05]). Based on principal component analysis, the HRnf group (n = 10) was characterized by high-flow speed (> 75th percentile) in all ROIs, whereas the LRnf group (n = 10) had contrasting patterns. In prospective long-term follow-up, 6 of 9 cases in the HRnf group, including the original no-flow cases, had no or low flow, whereas 8 of 8 cases in the LRnf group maintained robust flow. Machine learning models predicted patency failure with a mean F1 score of 0.930 and consistently relied on proximal recipient speed as the most important feature. Computation of posterior likelihood showed a 95.29% chance of patients having long-term patency given a lower proximal speed.</p><p><strong>Conclusions: </strong>These results suggest that a high proximal speed measured in the recipient vessel prior to anastomosis can elevate the risk of perioperative no flow and long-term reduction of flow. With an increased dataset size, continued FLOW 800-based ROI metric analysis could be used to guide intraoperative anastomosis site selection prior to anastomosis and predict patency outcome.</p>","PeriodicalId":16505,"journal":{"name":"Journal of neurosurgery","volume":" ","pages":"1-10"},"PeriodicalIF":3.5,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141992343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Thomas J Wilson, Zarina S Ali, Gavin A Davis, Nora F Dengler, Ketan Desai, Debora Garozzo, Fernando Guedes, Megan M Jack, Line G Jacques, Thomas Kretschmer, Mark A Mahan, Rajiv Midha, Willem Pondaag, Ross C Puffer, Lukas Rasulic, Wilson Z Ray, Elias Rizk, Carlos A Rodriguez-Aceves, Yuval Shapira, Brandon W Smith, Mariano Socolovsky, Robert J Spinner, Eric L Zager
Objective: Common peroneal (fibular) neuropathy is the most common mononeuropathy of the lower extremity. Despite this, there are surprisingly few studies on the topic, and a knowledge gap remains in the literature. As one attempts to address this knowledge gap, a core outcome set (COS) is needed to guide the planning phases of future studies to allow synthesis and comparability of these studies. The objective of this study was to develop the COS-common peroneal neuropathy (CoPe) using a modified Delphi approach.
Methods: A 5-stage approach was used to develop the COS-CoPe: 1) stage 1, consortium development; 2) stage 2, a literature review to identify potential outcome measures; 3) stage 3, a Delphi survey to develop consensus on outcomes for inclusion; 4) stage 4, a Delphi survey to develop definitions; and 5) stage 5, a consensus meeting to finalize COS and definitions. The study followed the COS-STAndards for Development (COS-STAD) recommendations.
Results: The Core Outcomes in Nerve Surgery (COINS) Consortium comprised 23 participants, all neurological surgeons, representing 13 countries. The final COS-CoPe consisted of 31 data points/outcomes covering domains of demographics, diagnostics, patient-reported outcomes, motor/sensory outcomes, and complications. Appropriate instruments, methods of testing, and definitions were set. The consensus minimum duration of follow-up was 12 months. The consensus optimal time points for assessment were preoperatively and 3, 6, 12, and 24 months postoperatively.
Conclusions: The COINS Consortium developed a consensus COS and provided definitions, methods of implementation, and time points for assessment. The COS-CoPe should serve as a minimum set of data that should be collected in all future neurosurgical studies on common peroneal neuropathy. Incorporation of this COS should help improve consistency in reporting, data synthesis, and comparability, and should minimize outcome reporting bias.
{"title":"Core outcomes in nerve surgery: development of a core outcome set for common peroneal (fibular) neuropathy.","authors":"Thomas J Wilson, Zarina S Ali, Gavin A Davis, Nora F Dengler, Ketan Desai, Debora Garozzo, Fernando Guedes, Megan M Jack, Line G Jacques, Thomas Kretschmer, Mark A Mahan, Rajiv Midha, Willem Pondaag, Ross C Puffer, Lukas Rasulic, Wilson Z Ray, Elias Rizk, Carlos A Rodriguez-Aceves, Yuval Shapira, Brandon W Smith, Mariano Socolovsky, Robert J Spinner, Eric L Zager","doi":"10.3171/2024.5.JNS24614","DOIUrl":"https://doi.org/10.3171/2024.5.JNS24614","url":null,"abstract":"<p><strong>Objective: </strong>Common peroneal (fibular) neuropathy is the most common mononeuropathy of the lower extremity. Despite this, there are surprisingly few studies on the topic, and a knowledge gap remains in the literature. As one attempts to address this knowledge gap, a core outcome set (COS) is needed to guide the planning phases of future studies to allow synthesis and comparability of these studies. The objective of this study was to develop the COS-common peroneal neuropathy (CoPe) using a modified Delphi approach.</p><p><strong>Methods: </strong>A 5-stage approach was used to develop the COS-CoPe: 1) stage 1, consortium development; 2) stage 2, a literature review to identify potential outcome measures; 3) stage 3, a Delphi survey to develop consensus on outcomes for inclusion; 4) stage 4, a Delphi survey to develop definitions; and 5) stage 5, a consensus meeting to finalize COS and definitions. The study followed the COS-STAndards for Development (COS-STAD) recommendations.</p><p><strong>Results: </strong>The Core Outcomes in Nerve Surgery (COINS) Consortium comprised 23 participants, all neurological surgeons, representing 13 countries. The final COS-CoPe consisted of 31 data points/outcomes covering domains of demographics, diagnostics, patient-reported outcomes, motor/sensory outcomes, and complications. Appropriate instruments, methods of testing, and definitions were set. The consensus minimum duration of follow-up was 12 months. The consensus optimal time points for assessment were preoperatively and 3, 6, 12, and 24 months postoperatively.</p><p><strong>Conclusions: </strong>The COINS Consortium developed a consensus COS and provided definitions, methods of implementation, and time points for assessment. The COS-CoPe should serve as a minimum set of data that should be collected in all future neurosurgical studies on common peroneal neuropathy. Incorporation of this COS should help improve consistency in reporting, data synthesis, and comparability, and should minimize outcome reporting bias.</p>","PeriodicalId":16505,"journal":{"name":"Journal of neurosurgery","volume":" ","pages":"1-9"},"PeriodicalIF":3.5,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141992299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-16DOI: 10.3171/2024.5.JNS241090
Alexandra Ramos-Márquez, Teo N Campo-Puerto, Diego Gómez-Amarillo, Fernando Hakim, Edgar G Ordóñez-Rubiano
{"title":"Letter to the Editor. Tegmental tracts as key individual components from the medial forebrain bundle.","authors":"Alexandra Ramos-Márquez, Teo N Campo-Puerto, Diego Gómez-Amarillo, Fernando Hakim, Edgar G Ordóñez-Rubiano","doi":"10.3171/2024.5.JNS241090","DOIUrl":"10.3171/2024.5.JNS241090","url":null,"abstract":"","PeriodicalId":16505,"journal":{"name":"Journal of neurosurgery","volume":" ","pages":"1447-1449"},"PeriodicalIF":3.5,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141992300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}