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Hemispherectomy

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https://www.readbyqxmd.com/read/29777895/asymmetry-of-cerebral-peduncles-for-predicting-motor-function-restoration-in-young-patients-before-hemispherectomy
#1
Xiu-Yu Du, Si-Chang Chen, Yu-Guang Guan, Jing-Jing Gu, Meng Zhao, Tian-Fu Li, Jun-Hong Pan, Guo-Ming Luan
OBJECTIVE: Hemispherectomy has been successfully used for medically intractable epilepsy patients. However, it is difficult to predict postoperative motor function. The aim of the present study was to analyze whether the preoperative asymmetry of cerebral peduncles could be used to predict motor function restoration before hemispherectomy for young patients with medically intractable epilepsy. METHODS: The clinical record and MRI data of 53 patients were retrospectively analyzed...
May 16, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29702407/generalized-seizures-presurgically-in-a-cohort-of-children-with-hemispherectomy-predictors-and-a-potential-link-to-surgical-outcome
#2
Ming Liu, Taoyun Ji, Qingzhu Liu, Shuang Wang, Ye Wu, Wen Wang, Weike Cheng, Ruofan Wang, Guojing Yu, Xiaoyan Liu, Lixin Cai, Yuwu Jiang
PURPOSE: Generalized seizures were often thought to be contraindications for hemispherectomy. However, few studies had investigated this issue comprehensively, as well as the predictors for generalized seizures in hemispheric lesion. We studied the predictors of generalized seizures and their potential link to seizure outcomes in a cohort of children who underwent hemispherectomy. METHODS: A cohort of 76 children with hemispherectomy were reviewed and dichotomized into two groups with and without generalized seizures confirmed by vEEG presurgically...
March 29, 2018: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/29694337/experimental-cerebral-hemispherectomy-in-rodent-models-a-systematic-review-of-current-literature
#3
Cezar Octavian Morosanu, Razvan Lucian Jurca, Larisa Simonca, Roxana Flavia Ilies, Remus Moldovan, Ioan Stefan Florian, Gabriela Adriana Filip
Cerebral hemispherectomy is a neurosurgical procedure that involves surgically removing one hemisphere of the brain, used as a therapeutic option in severe cases of intractable epilepsy. Several animal models have contributed to our understanding of the underlying neuromechanisms. The review was based on a PubMed search using the terms "hemispherectomy" and "mouse" or "rat" or "rodent", with no limitation of year of study or language. We identified a series of elements that were collected and analyzed that add up to our contemporary knowledge of this procedure...
2018: Acta Neurobiologiae Experimentalis
https://www.readbyqxmd.com/read/29692973/visual-hallucinations-a-novel-complication-after-hemispherectomy
#4
Jonas Vanags, Monisha Sachdev, Gerald Grant, Mohamad A Mikati
Two patients at our center experienced florid visual hallucinations following hemispherectomy. The first patient had drug-resistant left hemispheric focal seizures at 20 months of age from a previous stroke. Following functional hemispherectomy at age 3, he experienced frightening hallucinations 1 month post-operatively lasting 3.5 months. Our second patient underwent subtotal hemispherectomy at age 6 for drug-resistant focal seizures from right hemispheric cortical dysplasia. Eighteen months later he developed scary visual hallucinations during which he would shout and throw things...
2018: Epilepsy & Behavior Case Reports
https://www.readbyqxmd.com/read/29673722/density-spectral-array-of-bis-vista%C3%A2-monitoring-system-in-a-functional-hemispherectomy
#5
C Luis, E Vilà, L Moltó, A Pardo, J L Fernández Candila, S Pacreu
We present the case of an adult patient with drug-resistant epilepsy caused by extensive inflammation in the right cerebral hemisphere. She was scheduled to undergo right functional hemispherectomy, which is common in pediatric surgery, but about which few studies have been published with respect to adult patients. During the intraoperative period, the density spectral array of the bilateral bispectral index (BIS) VISTATM monitoring system was used. We observed a power increase in low frequency (0.1-4Hz) and alpha bands (8-12Hz) in the right hemisphere, where the epileptogenic focus was...
April 16, 2018: Revista Española de Anestesiología y Reanimación
https://www.readbyqxmd.com/read/29672310/significance-of-fdg-pet-hypermetabolism-in-children-with-intractable-focal-epilepsy
#6
Solon Schur, Victoria Allen, Andrew White, David Mirsky, Nicholas Stence, Brent O'Neill, Michael Handler, Roy Dudley, Pramote Laoprasert
BACKGROUND: Interictal 18F-fluorodeoxyglucose-positron emission topography (FDG-PET) hypometabolism is routinely used in the presurgical workup of children with medically intractable epilepsy (MIE). FDG-PET hypermetabolism, however, is rarely seen, and the significance of this finding in the epilepsy workup is not well established. METHODS: We performed a retrospective study of patients who underwent FDG-PET during the presurgical workup of MIE over a 4-year period, between 1 January 2010 and 31 December 2013, at the Children's Hospital Colorado, CO, USA...
April 19, 2018: Pediatric Neurosurgery
https://www.readbyqxmd.com/read/29629902/humanized-mouse-model-of-rasmussen-s-encephalitis-supports-the-immune-mediated-hypothesis
#7
Hania Kebir, Lionel Carmant, François Fontaine, Kathie Béland, Ciprian M Bosoi, Nathalie T Sanon, Jorge I Alvarez, Sébastien Desgent, Camille L Pittet, David Hébert, Marie-Josée Langlois, Rose-Marie Rébillard, Dang K Nguyen, Cécile Cieuta-Walti, Gregory L Holmes, Howard P Goodkin, John R Mytinger, Mary B Connolly, Alexandre Prat, Elie Haddad
Rasmussen's encephalitis (RE) is a chronic inflammatory brain disorder that causes frequent seizures and unilateral hemispheric atrophy with progressive neurological deficits. Hemispherectomy remains the only treatment that leads to seizure freedom for this refractory epileptic syndrome. The absence of an animal model of disease has been a major obstacle hampering the development of effective therapies. Here, we describe an experimental mouse model that shares several clinical and pathological features with the human disease...
April 9, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29629901/blocking-immune-intrusion-into-the-brain-suppresses-epilepsy-in-rasmussen-s-encephalitis-model
#8
Lawrence Steinman
Rasmussen's encephalitis (RE) is a neuroinflammatory disease that typically affects only one hemisphere of the brain, resulting in severe seizures. Sixty years after the disease was first described, the preferred and best treatment option for RE is grotesque and involves removing a hemisphere of the brain (hemispherectomy); therefore, a better understanding of this seizure disorder may provide additional, less invasive therapeutic options. In this issue of the JCI, Carmant and colleagues have developed an animal model of this focal seizure disorder...
April 9, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29564536/long-term-neurocognitive-improvement-after-late-right-hemispherectomy-case-report-and-review-of-the-literature
#9
Alessandra Moletto, Irene Bagnasco, Patrizia Dassi, Piernanda Vigliano
OBJECTIVE: To study the long-term neurocognitive changes of a right-handed girl with intractable epilepsy after late right hemispherectomy and compare them with data in the literature. METHOD: The girl was affected by an epileptic encephalopathy associated with right fronto-temporo-parietal polymicrogyria; she was submitted to right hemispherectomy at the age of 5 and examined with cognitive and neuropsychological tests at the age of 17 years. The girl took advantage of neurocognitive rehabilitation for several years; she is currently seizure-free and off therapy...
March 21, 2018: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/29480510/-functional-hemispherectomy-long-term-follow-up-in-a-series-of-five-patients
#10
X Rodriguez-Osorio, F J Lopez-Gonzalez, J Eiris-Punal, C Frieiro-Dantas, C Gomez-Lado, M Peleteiro-Fernandez, A Prieto-Gonzalez
INTRODUCTION: Functional hemispherectomy consists in palliative epilepsy surgical procedure usually performed in patients with pharmaco-resistant epilepsy and hemispheric syndromes. It is based on the neural disconnection of the affected hemisphere with preservation of the vascular supply. AIM: To analyze long-term prognosis and safety of the hemispherectomies performed in our institution. PATIENTS AND METHODS: Retrospective analysis collecting the following variables: age, gender, age of epilepsy onset, type of seizures, etiology, age of epilepsy surgery, prognosis and potential surgical complications...
March 1, 2018: Revista de Neurologia
https://www.readbyqxmd.com/read/29247822/treatment-for-patients-with-recurrent-intractable-epilepsy-after-primary-hemispherectomy
#11
Sichang Chen, Yuguang Guan, Changqing Liu, Xiuyu Du, Yao Zhang, Shuai Chen, Jie Wang, Tianfu Li, Guoming Luan
BACKGROUND: Hemispherectomy is useful for treating patients with intractable epilepsy caused by diffuse unilateral hemispheric disease. Few patients develop recurrent seizures after hemispherectomy, but managing epilepsy by medical means alone is challenging for these patients, and it is also difficult to determine the treatment options and assess the need for reoperation. OBJECTIVE: To present the treatment strategies and outcomes of patients who developed recurrent intractable epilepsy after initial hemispherectomies that were performed at a single institution by a single surgeon between 2004 and 2014...
January 2018: Epilepsy Research
https://www.readbyqxmd.com/read/29210884/discrepancy-between-cerebral-structure-and-cognitive-functioning-a-review
#12
REVIEW
Michael Nahm, David Rousseau, Bruce Greyson
Neuroscientists typically assume that human mental functions are generated by the brain and that its structural elements, including the different cell layers and tissues that form the neocortex, play specific roles in this complex process. Different functional units are thought to complement one another to create an integrated self-awareness or episodic memory. Still, findings that pertain to brain dysplasia and brain lesions indicate that in some individuals there is a considerable discrepancy between the cerebral structures and cognitive functioning...
December 2017: Journal of Nervous and Mental Disease
https://www.readbyqxmd.com/read/29167751/diffusion-tensor-imaging-in-an-infant-undergoing-functional-hemispherectomy-a-surgical-aid
#13
Allen L Ho, Arjun V Pendharkar, Eric S Sussman, May Casazza, Gerald A Grant
Hemispherectomy is a highly effective treatment option for children with severe, unilateral, medically refractory epilepsy. Many patients undergoing hemispherectomy are younger patients with dysmorphic brains, making accomplishing a complete disconnection challenging due to anatomic distortion, even with the aid of intraoperative navigation. Diffusion tensor imaging (DTI) has been proposed as a valuable imaging adjunct perioperatively to help guide surgeons intraoperatively, as well as for post-surgical evaluation and confirmation of complete hemispheric disconnection...
September 18, 2017: Curēus
https://www.readbyqxmd.com/read/29159066/six-adult-patients-with-septo-optic-dysplasia-and-drug-resistant-epilepsy-clinical-findings-and-course
#14
Mashael AlKhateeb, Richard McLachlan, Jorge Burneo, David Diosy, Seyed Mirsattari
Septo-optic dysplasia (SOD) is a rare disorder associated with optic nerve hypoplasia, pituitary abnormalities and agenesis/dysgenesis of midline brain structures including the septum pellucidum and corpus callosum. Though sometimes associated with drug-resistant epilepsy, this association has not been well studied. We report six SOD patients with associated malformation of cortical development (MCD) and drug-resistant epilepsy who underwent video-EEG telemetry at our centre between 1998 and 2016 for drug-resistant epilepsy...
2017: Epilepsy & Behavior Case Reports
https://www.readbyqxmd.com/read/29123639/the-application-of-preoperative-computed-tomography-angiogram-for-hemispherectomy
#15
Jiqing Qiu, Yu Cui, Bin Qi, Lichao Sun, Zhanpeng Zhu
No abstract text is available yet for this article.
September 15, 2017: Clinics and Practice
https://www.readbyqxmd.com/read/29099351/corticospinal-tract-atrophy-and-motor-fmri-predict-motor-preservation-after-functional-cerebral-hemispherectomy
#16
Anthony C Wang, George M Ibrahim, Andrew V Poliakov, Page I Wang, Aria Fallah, Gary W Mathern, Robert T Buckley, Kelly Collins, Alexander G Weil, Hillary A Shurtleff, Molly H Warner, Francisco A Perez, Dennis W Shaw, Jason N Wright, Russell P Saneto, Edward J Novotny, Amy Lee, Samuel R Browd, Jeffrey G Ojemann
OBJECTIVE The potential loss of motor function after cerebral hemispherectomy is a common cause of anguish for patients, their families, and their physicians. The deficits these patients face are individually unique, but as a whole they provide a framework to understand the mechanisms underlying cortical reorganization of motor function. This study investigated whether preoperative functional MRI (fMRI) and diffusion tensor imaging (DTI) could predict the postoperative preservation of hand motor function. METHODS Thirteen independent reviewers analyzed sensorimotor fMRI and colored fractional anisotropy (CoFA)-DTI maps in 25 patients undergoing functional hemispherectomy for treatment of intractable seizures...
January 2018: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29091250/functional-hemispherectomy-for-adult-rasmussen-encephalitis-a-case-report-and-literature-review
#17
Qun Wang, Zhanpeng Zhu, Guangming Wang, Lichao Sun, Jiqing Qiu
BACKGROUND: Rasmussen encephalitis (RE) is a rare and severe brain disorder associated with unilateral hemispheric atrophy, manifesting as severe refractory epilepsy, hemiplegia, defects of motor and speech functions, and cognitive impairment. Treatment of RE, especially in adult patients, is extremely challenging. Herein, we report the case of an adult patient with RE who was treated with a functional hemispherectomy and achieved a favorable prognosis. CASE REPORT: A 29-year-old woman presented with a 24-year history of epileptic seizures...
September 26, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/29089981/how-the-brain-can-rewire-itself-after-an-injury-the-lesson-from-hemispherectomy
#18
Luca Sebastianelli, Leopold Saltuari, Raffaele Nardone
No abstract text is available yet for this article.
September 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/29073473/functional-hemispherectomy-is-safe-and-effective-in-adult-patients-with-epilepsy
#19
Barbara Schmeiser, Josef Zentner, Bernhard Jochen Steinhoff, Andreas Schulze-Bonhage, Evangelos Kogias, Anne-Sophie Wendling, Thilo Hammen
INTRODUCTION: Functional hemispherectomy (FH) is a well-established therapeutic option for children with epilepsy with parenchymal damage confined to one hemisphere, yet its application in adults remains rare. The intention of our study was to investigate postoperative clinical and epileptological outcome in adults who received FH for intractable epilepsy. MATERIALS AND METHODS: We retrospectively analyzed 12 adult patients (18-56years) with intractable epilepsy due to unihemispheric pathology...
December 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29054955/trapped-ipsilateral-lateral-ventricle-a-delayed-complication-of-hemispherotomy-for-rasmussen-s-encephalitis
#20
Rajesh Shankar Iyer, Ravi Mohan Rao, Karunakaran Muthukalathi, Praveen Kumar
Hemispherotomy is the currently preferred surgical treatment option for refractory unihemispheric epilepsies. The incidence of hydrocephalus is greatly reduced in this disconnective procedure when compared with the resective procedure of anatomical hemispherectomy. We describe the occurrence of ipsilateral trapped lateral ventricle months after hemispherotomy for Rasmussen's encephalitis. There is enough evidence to suggest that this rare and interesting complication is due to the local inflammatory changes associated with the surgical trauma...
October 19, 2017: BMJ Case Reports
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