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Hemispherectomy

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https://www.readbyqxmd.com/read/29123639/the-application-of-preoperative-computed-tomography-angiogram-for-hemispherectomy
#1
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
#2
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...
November 3, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29091250/functional-hemispherectomy-for-adult-rasmussen-encephalitis-a-case-report-and-literature-review
#3
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
#4
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
#5
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...
October 23, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29054955/trapped-ipsilateral-lateral-ventricle-a-delayed-complication-of-hemispherotomy-for-rasmussen-s-encephalitis
#6
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
https://www.readbyqxmd.com/read/28973550/case-report-free-latissimus-dorsi-flap-in-combination-with-subdural-space-reduction-for-the-prevention-of-recurrent-hemorrhage-following-hemispherectomy
#7
Carolyn M Benson, Holger Joswig, H Brian Evans, David A Steven
BACKGROUND AND IMPORTANCE: Extensive cerebral resections for the treatment of epilepsy may result in a large intracranial dead space that is prone to recurrent hemorrhage, either due to mechanical dislodgement or the development of extensive subdural membranes. Several techniques have been proposed to decrease the risk of hemorrhage by either reducing or filling the remaining intracranial dead space. CLINICAL PRESENTATION: We present a case of persistent hemorrhage following functional hemispherectomy in a patient with a large porencephalic cyst...
July 20, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28841860/usefulness-of-intraoperative-insular-electrocorticography-in-modified-functional-hemispherectomy
#8
Gun-Ha Kim, Joo Hee Seo, James E Baumgartner, Fatima Ajmal, Ki Hyeong Lee
BACKGROUND: The insular cortex is not routinely removed in modified functional hemispherectomy due to the risk of injury to the main arteries and to deep structures. Our study evaluates the safety and usefulness of applying intraoperative electrocorticography (ECoG) on the insular during the hemispherectomy. METHODS: We included all patients who underwent insular ECoG during a modified functional hemispherectomy from 2012 to 2015. After the surgery, the decision for further resection of the insular cortex was made based on the presence of electrographic seizures on ECoG...
August 25, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28637636/epilepsy-after-cerebral-infection-review-of-the-literature-and-the-potential-for-surgery
#9
Georgia Ramantani, Hans Holthausen
The risk of unprovoked seizures in population-based cohorts of cerebral infection survivors is 7-8% in developed countries, rising to considerably higher rates in resource-poor countries. The main risk factors for epilepsy after cerebral infection, besides acute seizures, are infection-associated brain lesions and status epilepticus during the acute phase. Despite the high prevalence of pharmacoresistant epilepsies after cerebral infections, especially in patients with MRI-identifiable lesions, only a small minority undergoes epilepsy surgery...
June 1, 2017: Epileptic Disorders: International Epilepsy Journal with Videotape
https://www.readbyqxmd.com/read/28549652/the-fault-in-their-stars-accumulating-astrocytic-inclusions-associated-with-clusters-of-epileptic-spasms-in-children-with-global-developmental-delay
#10
Robyn Whitney, Sameer AlMehmadi, Bláthnaid McCoy, Ivanna Yau, Ayako Ochi, Hiroshi Otsubo, Shelly K Weiss, James Rutka, Lili-Naz Hazrati, O Carter Snead, Cristina Go
BACKGROUND: The presence of cerebral astrocytic inclusions recently has been described in a subset of children with early-onset refractory epilepsy, with or without structural brain malformations, and varying degrees of developmental delay. METHODS: We describe two new individuals with epilepsy with astrocytic inclusions and suggest that in some children this disorder may represent a unique hemispheric epilepsy. We review previously reported individuals with epilepsy with astrocytic inclusions...
April 18, 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/28521267/epileptogenic-high-frequency-oscillations-skip-the-motor-area-in-children-with-multilobar-drug-resistant-epilepsy
#11
Yasushi Iimura, Kevin Jones, Kyoko Hattori, Yushi Okazawa, Atsuko Noda, Kana Hoashi, Yutaka Nonoda, Eishi Asano, Tomoyuki Akiyama, Cristina Go, Ayako Ochi, O Carter Snead, Elizabeth J Donner, James T Rutka, James M Drake, Hiroshi Otsubo
OBJECTIVE: Subtotal hemispherectomy involves the resection of multiple lobes in children with drug-resistant epilepsy, skipping the motor area (MA). We determined epileptogenicity using the occurrence rate (OR) of high-frequency oscillations (HFOs) and the modulation index (MI), demonstrating strength of coupling between HFO and slow wave. We hypothesized that epileptogenicity increased over the multiple lobes but skipped the MA. METHODS: We analyzed 23 children (14 subtotal hemispherectomy; 9 multilobar resections)...
July 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28470553/intrinsic-functional-organization-of-putative-language-networks-in-the-brain-following-left-cerebral-hemispherectomy
#12
Anna Ivanova, Eran Zaidel, Noriko Salamon, Susan Bookheimer, Lucina Q Uddin, Stella de Bode
In rare cases of severe and intractable epilepsy, cerebral hemispherectomy is performed to arrest seizure activity and improve quality of life. The remaining hemisphere is often capable of supporting many cognitive functions post-surgery, although the outcome depends on the underlying etiology, hemisphere removed, and age of resection. The mechanisms underlying this massive reorganization are at present unknown. Here we examined intrinsic functional connectivity of putative language brain networks in four children after left cerebral hemispherectomy using resting-state functional magnetic resonance imaging (rsfMRI)...
May 3, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28452614/outcomes-after-hemispherectomy-in-adult-patients-with-intractable-epilepsy-institutional-experience-and-systematic-review-of-the-literature
#13
Courtney M Schusse, Kris Smith, Cornelia Drees
OBJECTIVE Hemispherectomy is a surgical technique that is established as a standard treatment in appropriately selected patients with drug-resistant epilepsy. It has proven to be successful in pediatric patients with unilateral hemispheric lesions but is underutilized in adults. This study retrospectively evaluated the clinical outcomes after hemispherectomy in adult patients with refractory epilepsy. METHODS This study examined 6 cases of hemispherectomy in adult patients at Barrow Neurological Institute. In addition, all case series of hemispherectomy in adult patients were identified through a literature review using MEDLINE and PubMed...
April 28, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28424599/electrophysiological-sequelae-of-hemispherotomy-in-ipsilateral-human-cortex
#14
Ammar H Hawasli, Ravi Chacko, Nicholas P Szrama, David T Bundy, Mrinal Pahwa, Chester K Yarbrough, Brian J Dlouhy, David D Limbrick, Dennis L Barbour, Matthew D Smyth, Eric C Leuthardt
Objectives: Hemispheric disconnection has been used as a treatment of medically refractory epilepsy and evolved from anatomic hemispherectomy to functional hemispherectomies to hemispherotomies. The hemispherotomy procedure involves disconnection of an entire hemisphere with limited tissue resection and is reserved for medically-refractory epilepsy due to diffuse hemispheric disease. Although it is thought to be effective by preventing seizures from spreading to the contralateral hemisphere, the electrophysiological effects of a hemispherotomy on the ipsilateral hemisphere remain poorly defined...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28414105/functional-reorganization-after-hemispherectomy-in-humans-and-animal-models-what-can-we-learn-about-the-brain-s-resilience-to-extensive-unilateral-lesions
#15
REVIEW
Luca Sebastianelli, Viviana Versace, Alexandra Taylor, Francesco Brigo, Wolfgang Nothdurfter, Leopold Saltuari, Eugen Trinka, Raffaele Nardone
Hemispherectomy (HS) is an effective surgical procedure aimed at managing otherwise intractable epilepsy in cases of diffuse unihemispheric pathologies. Neurological recovery in subjects treated with HS is not limited to seizure reduction, rather, sensory-motor and behavioral improvement is often observed. This outcome highlights the considerable capability of the brain to react to such an extensive lesion, by functionally reorganizing and rewiring the cerebral cortex, especially early in life. In this narrative review, we summarize the animal studies as well as the human neurophysiological and neuroimaging studies dealing with the reorganizational processes that occur after HS...
April 13, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28399506/timing-and-type-of-hemispherectomy-for-rasmussen-s-encephalitis-analysis-of-45-patients
#16
Yuguang Guan, Sichang Chen, Changqing Liu, Xiuyu Du, Yao Zhang, Shuai Chen, Jie Wang, Tianfu Li, Guoming Luan
OBJECTIVE: To describe the surgery outcomes of RE patients in one centerto identify the indication for surgical treatment that results in the most favorable outcome. METHOD: Forty-five RE patients from a single center were retrospectively reviewed. Preoperative evaluations included assessments of clinical manifestations, cognitive status, a physical examination, MRI, positron emission tomography (PET), electroencephalography (EEG), and magnetoencephalography (MEG)...
March 22, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28386922/technical-descriptions-of-four-hemispherectomy-approaches-from-the-pediatric-epilepsy-surgery-meeting-at-gothenburg-2014
#17
REVIEW
James E Baumgartner, Jeffrey P Blount, Thomas Blauwblomme, P Sarat Chandra
Hemispherectomy is a complex multistep procedure with a steep learning curve. Several surgical approaches have been developed, but each requires considerable practice to master. Four experienced pediatric neurosurgeons, who participated in the 2014 Gothenburg Pediatric Epilepsy Surgery Meeting, provided succinct technical summaries of four hemispherectomy approaches: modified functional hemispherectomy, peri-insular hemispherotomy, parasagittal hemispherotomy, and endoscopic-assisted hemispherotomy. No clinical or outcome data are included...
April 2017: Epilepsia
https://www.readbyqxmd.com/read/28377884/evolution-of-epilepsy-in-hemimegalencephaly-from-infancy-to-adulthood-case-report-and-review-of-the-literature
#18
Kristin M Ikeda, Seyed M Mirsattari
Hemimegalencephaly (HME) is a rare disorder of cortical development with overgrowth of one cerebral hemisphere. Patients have intellectual delay, hemiparesis and severe epilepsy. Drug-resistant epilepsy is often treated with a hemispherectomy. We review the literature on HME natural history and report a 26-year-old man with HME who did not undergo hemispherectomy in childhood with recurrent focal convulsive or non-convulsive status epilepticus. Few patients with HME have been followed into adulthood. Reported adult cases have milder epilepsy or underwent hemispherectomy in childhood...
2017: Epilepsy & Behavior Case Reports
https://www.readbyqxmd.com/read/28348634/trans-synaptic-retrograde-degeneration-following-hemispherectomy-in-childhood
#19
Sian E Handley, Vasiliki S Panteli, Alki Liasis
Trans-synaptic retrograde degeneration (TRD) in the human visual system has been established. However there are few studies demonstrating macular thinning of the Retinal Ganglion cell Layer and/or Inner Plexiform layer (RGCL-IPL), corresponding to an acquired homonymous hemianopia. We report a 17 year old with a homonymous hemianopia, secondary to a hemispherectomy for intractable epilepsy. Three years following hemispherectomy, Optical Coherence Tomography (OCT) revealed evidence of TRD, corresponding to his complete homonymous hemianopia...
April 2017: Neuro-ophthalmology
https://www.readbyqxmd.com/read/28300030/hemispheric-polymicrogyria-and-neonatal-seizures-a-potentially-life-threatening-combination
#20
Paula M Brna, A Simon Harvey, Richard J Leventer
Polymicrogyria (PMG) is a heterogeneous malformation of cortical development characterized by excessive gyration and abnormal cortical lamination. Typically, bilateral forms have more severe developmental delay and early-onset epilepsy, but the full spectrum of severity remains ill-defined. We report two cases of right hemispheric PMG and neonatal-onset, drug-resistant seizures culminating in early death. Case 1 began having seizures on Day 1 of life that intensified in severity and proved resistant to numerous antiepileptic drugs...
March 1, 2017: Epileptic Disorders: International Epilepsy Journal with Videotape
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