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https://www.readbyqxmd.com/read/28213194/subcortical-mapping-using-an-electrified-cusa-in-pediatric-supratentorial-surgery
#1
Jonathan Roth, Akiva Korn, Yifat Bitan-Talmor, Rivka Kaufman, Margaret Ekstein, Shlomi Constantini
BACKGROUND: Intraoperative electrophysiology is increasingly used for various lesion resections, both in adult and pediatric brain surgery. Subcortical mapping is often used in adult surgery when lesions lie in proximity to the corticospinal tract (CST). We describe a novel technique of continuous subcortical mapping using an electrified Cavitron UltraSonic Aspirator (CUSA) in children with supratentorial lesions. METHODS: We evaluated the method of subcortical mapping using a CUSA as a stimulation probe...
February 14, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28199936/the-longitudinal-split-technique-for-narrow-canal-tibia-in-a-case-of-distal-femur-replacement-for-osteosarcoma
#2
Toru Akiyama, Shotaro Kanda, Kazuo Saita
INTRODUCTION: There are currently no available prostheses that can be used for extremely small femurs or tibias of adult patients in countries where allograft is unavailable. CASE REPORT: We report the case of a 17-year-old girl requiring special limb salvage technique for distal femur reconstruction following resection of malignant tumor. This technique was needed because of a very narrow canal of the tibia. We split bilateral tibial cortices longitudinally with osteotomies to enlarge tibial canal enough to insert conventional endoprosthesis...
January 31, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28199934/mixed-corticomedullary-adrenal-carcinoma-case-report-comparison-in-features-treatment-and-prognosis-with-the-other-two-reported-cases
#3
Mhd Belal Alsabek, Riad Alhmaidi, Bader Ghazzawi, Ghiath Hamed, Alhadi Alseoudi
INTRODUCTION: Adrenal corticomedullary adenoma was reviewed in many cases in PubMed Library, While the coincidence corticomedullary adrenal carcinoma in the same gland was just described in two cases in the medical literature. Our case is the third to be reported and was treated with surgery and adjuvant chemotherapy and followed for two years. PRESENTATION OF CASE: A 50-year-old man suffered from a mass effect in the left abdominal side. While the laboratory showed a mild elevation in the levels of both serum cortisol and 24h urine cortisol, radiological images were highly suggested an adrenal malignant tumor without metastasis...
January 31, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28188403/-stereotactic-laser-thermocoagulation-in-epilepsy-surgery
#4
C Hoppe, J-A Witt, C Helmstaedter, T Gasser, H Vatter, C E Elger
In common with other stereotactic procedures, stereotactic laser thermocoagulation (SLT) promises gentle destruction of pathological tissue, which might become especially relevant for epilepsy surgery in the future. Compared to standard resection, no large craniotomy is necessary, cortical damage during access to deep-seated lesions can be avoided and interventions close to eloquent brain areas become possible. We describe the history and rationale of laser neurosurgery as well as the two available SLT systems (Visualase® and NeuroBlate®; CE marks pending)...
February 10, 2017: Der Nervenarzt
https://www.readbyqxmd.com/read/28180072/the-diminishing-dominance-of-the-dominant-hemisphere-language-fmri-in-focal-epilepsy
#5
Chris Tailby, David F Abbott, Graeme D Jackson
"Which is the dominant hemisphere?" is a question that arises frequently in patients considered for neurosurgery. The concept of the dominant hemisphere implies uniformity of language lateralisation throughout the brain. It is increasingly recognised that this is not the case in the healthy control brain, and it is especially not so in neurological diseases such as epilepsy. In the present work we adapt our published objective lateralisation method (based on the construction of laterality curves) for use with sub-lobar cortical, subcortical and cerebellar regions of interest (ROIs)...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28175393/131%C3%A2-resective-surgery-for-focal-cortical-dysplasia-in-children-a-comparative-analysis-of-the-utility-of-intraoperative-magnetic-resonance-imaging
#6
Chima Oluigbo, Matthew Sacino, John S Myseros, Suresh N Magge, William Gaillard, Robert F Keating
No abstract text is available yet for this article.
August 1, 2016: Neurosurgery
https://www.readbyqxmd.com/read/28167906/non-invasive-mapping-of-face-processing-by-navigated-transcranial-magnetic-stimulation
#7
Stefanie Maurer, Katrin Giglhuber, Nico Sollmann, Anna Kelm, Sebastian Ille, Theresa Hauck, Noriko Tanigawa, Florian Ringel, Tobias Boeckh-Behrens, Bernhard Meyer, Sandro M Krieg
Background: Besides motor and language function, tumor resections within the frontal and parietal lobe have also been reported to cause neuropsychological impairment like prosopagnosia. Objective: Since non-navigated transcranial magnetic stimulation (TMS) has previously been used to map neuropsychological cortical function, this study aims to evaluate the feasibility and spatial discrimination of repetitive navigated TMS (rTMS) mapping for detection of face processing impairment in healthy volunteers. The study was also designed to establish this examination for preoperative mapping in brain tumor patients...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28162255/direct-electrical-bipolar-electrostimulation-for-functional-cortical-and-subcortical-cerebral-mapping-in-awake-craniotomy-practical-considerations
#8
J Pallud, O Rigaux-Viode, R Corns, J Muto, C Lopez Lopez, C Mellerio, X Sauvageon, E Dezamis
INTRODUCTION: The aim of brain glioma surgery is to maximize the quality of resection, while minimizing the risk of sequelae. Due to the frequent location of gliomas near or within eloquent areas, owing to their infiltrative feature, and because of major interindividual variability, the anatomofunctional organization and connectivity must be studied individually. Therefore, to optimize the benefit-to-risk ratio of surgery, intraoperative functional mapping is extensively used. MATERIAL AND METHODS: This article aims at describing the rationale, indications and practical aspects of intraoperative direct electrical bipolar electrostimulation for cortical and subcortical mapping under awake conditions using the asleep-awake asleep anaesthetic protocol in the setting of cerebral gliomas...
February 2, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28161012/intraoperative-identification-of-the-negative-motor-network-during-awake-surgery-to-prevent-deficit-following-brain-resection-in-premotor-regions
#9
F Rech, H Duffau, C Pinelli, A Masson, P Roublot, A Billy-Jacques, H Brissart, T Civit
INTRODUCTION: Surgical resection in premotor areas can lead to supplementary motor area syndrome as well as a permanent deficit. However, recent findings suggest a putative role of the negative motor network in those dysfunctions. Our objective was to compare the functional results in two groups of adult patients who underwent the resection of a frontal glioma with and without resection of the negative motor networks. MATERIAL AND METHODS: Twelve patients (total of 13 surgeries) were selected for awake surgery for a frontal glioma...
February 1, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28150296/radiofrequency-thermocoagulation-of-the-seizure-onset-zone-during-stereoelectroencephalography
#10
Petia Dimova, Luca de Palma, Anne-Sophie Job-Chapron, Lorella Minotti, Dominique Hoffmann, Philippe Kahane
OBJECTIVE: To assess long-term outcome and identify prognostic factors of radiofrequency thermocoagulation (RFTC) following stereoelectroencephalography (SEEG) explorations in particularly complex cases of focal epilepsy. METHODS: We retrospectively reviewed the medical charts, video-SEEG recordings, and outcomes for 23 patients (aged 6-53 years) treated with SEEG-guided RFTC, of whom 15 had negative magnetic resonance imaging (MRI) findings, and 10 were considered noneligible for resective surgery after SEEG...
February 2, 2017: Epilepsia
https://www.readbyqxmd.com/read/28120080/functional-magnetic-resonance-imaging-fmri-pre-intraoperative-tractography-in-neurosurgery-the-experience-of-sant-andrea-rome-university-hospital
#11
Giancarlo D'Andrea, Giuseppe Trillo', Veronica Picotti, Antonino Raco
BACKGROUND: The goal of neurosurgery for cerebral intraparenchymal neoplasms of the eloquent areas is maximal resection with the preservation of normal functions, and minimizing operative risk and postoperative morbidity. Currently, modern technological advances in neuroradiological tools, neuronavigation, and intraoperative magnetic resonance imaging (MRI) have produced great improvements in postoperative morbidity after the surgery of cerebral eloquent areas. The integration of preoperative functional MRI (fMRI), intraoperative MRI (volumetric and diffusion tensor imaging [DTI]), and neuronavigation, defined as "functional neuronavigation" has improved the intraoperative detection of the eloquent areas...
2017: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/28113303/epileptogenic-source-imaging-using-cross-frequency-coupled-signals-from-scalp-eeg
#12
Li Chunsheng, Daniel Jacobs, Trevor Hilton, Martin Del Campo, Yotin Chinvarun, Peter Carlen, Berj Bardakjian
OBJECTIVE: The epileptogenic zone (EZ) is a brain region containing the sources of seizure genesis. Removal of the EZ is associated with cessation of seizures after resective surgical procedures, as measured by Engel Class I score. This study describes a novel EEG source imaging (ESI) method which uses cross frequency coupled potential signals (SCFC) derived from scalp EEG. METHODS: Scalp EEG were recorded from ten patients (20 seizures) suffering from epilepsy...
September 27, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28112550/intraoperative-multi-exposure-speckle-imaging-of-cerebral-blood-flow
#13
Lisa M Richards, Sm Shams Kazmi, Katherine E Olin, James S Waldron, Douglas J Fox, Andrew K Dunn
Multiple studies have demonstrated that laser speckle contrast imaging (LSCI) has high potential to be a valuable cerebral blood flow monitoring technique during neurosurgery. However, the quantitative accuracy and sensitivity of LSCI is limited, and highly dependent on the exposure time. An extension to LSCI called multi-exposure speckle imaging (MESI) overcomes these limitations, and was evaluated intraoperatively in patients undergoing brain tumor resection. This clinical study ( n = 8) recorded multiple exposure times from the same cortical tissue area spanning 0...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28112455/clinical-impact-of-intraoperative-ccep-monitoring-in-evaluating-the-dorsal-language-white-matter-pathway
#14
Yukihiro Yamao, Kengo Suzuki, Takeharu Kunieda, Riki Matsumoto, Yoshiki Arakawa, Takuro Nakae, Sei Nishida, Rika Inano, Sumiya Shibata, Akihiro Shimotake, Takayuki Kikuchi, Nobukatsu Sawamoto, Nobuhiro Mikuni, Akio Ikeda, Hidenao Fukuyama, Susumu Miyamoto
In order to preserve postoperative language function, we recently proposed a new intraoperative method to monitor the integrity of the dorsal language pathway (arcuate fasciculus; AF) using cortico-cortical evoked potentials (CCEPs). Based on further investigations (20 patients, 21 CCEP investigations), including patients who were not suitable for awake surgery (five CCEP investigations) or those without preoperative neuroimaging data (eight CCEP investigations including four with untraceable tractography due to brain edema), we attempted to clarify the clinical impact of this new intraoperative method...
January 23, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28109026/refinement-of-the-criteria-for-ultrastructural-peritubular-capillary-basement-membrane-multilayering-in-the-diagnosis-of-chronic-active-acute-antibody-mediated-rejection
#15
Heounjeong Go, Sung Shin, Young Hoon Kim, Duck Jong Han, Yong Mee Cho
Chronic active/acute antibody-mediated rejection (cABMR) is the main cause of late renal allograft loss. Severe peritubular capillary basement membrane multilayering (PTCML) assessed on electron microscopy is one diagnostic feature of cABMR according to the Banff2013 classification. We aimed to refine the PTCML criteria for an earlier diagnosis of cABMR. We retrospectively investigated ultrastructural features of 159 consecutive renal allografts and 44 non-allografts. The presence of serum donor-specific antibodies at the time of biopsy of allografts was also examined...
January 21, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/28107757/piezosurgery-a-safe-technique-for-inferior-alveolar-nerve-mobilization-in-surgical-correction-of-hemimandibular-hyperplasia-review-of-the-literature-and-case-report
#16
Amel S Eltayeb, Abdelnasir G Ahmad
INTRODUCTION: Piezoelectric bone surgery is a relatively new alternative for bone-related procedures in oral and maxillofacial surgery. It represents an innovative technique as it offers the maxillofacial surgeon the opportunity to make precise bone cuts without damaging any soft tissue and providing a blood less surgical field. Correction of facial asymmetries is still a major problem in need of an adequate solution. Neurosensory damage to the inferior alveolar nerve can be an adverse effect of surgical correction of hemimandibular hyperplasia...
December 30, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28101478/focal-epileptogenic-lesions-in-adult-patients-with-epilepsy-and-generalized-epileptiform-discharges
#17
Dong Wook Kim, Seo-Young Lee, Sang Kun Lee
BACKGROUND AND PURPOSE: There are reports of successful resective epilepsy surgery for pediatric patients with epilepsy and generalized epileptiform discharges when they had focal epileptogenic lesions identified by MRI. However, there is limited information regarding adult patients with epilepsy who have both generalized epileptiform discharges and focal epileptogenic lesions. METHODS: To investigate the incidence and characteristics of adult patients who have both generalized epileptiform discharges and potentially epileptogenic lesions, we retrospectively analyzed data of clinical features and results of EEG and MRI of all patients with adult-onset epilepsy in a tertiary referral hospital...
December 2016: Journal of Epilepsy Research
https://www.readbyqxmd.com/read/28098941/posterior-cortex-epilepsy-surgery-in-childhood-and-adolescence-predictors-of-long-term-seizure-outcome
#18
Georgia Ramantani, Angeliki Stathi, Armin Brandt, Karl Strobl, Susanne Schubert-Bast, Gert Wiegand, Rudolf Korinthenberg, Vera van Velthoven, Josef Zentner, Andreas Schulze-Bonhage, Thomas Bast
OBJECTIVE: We aimed to investigate the long-term seizure outcome of children and adolescents who were undergoing epilepsy surgery in the parietooccipital cortex and determine their predictive factors. METHODS: We retrospectively analyzed the data of 50 consecutive patients aged 11.1 (mean) ± 5.1 (standard deviation) years at surgery. All patients but one had a magnetic resonance imaging (MRI)-visible lesion. Resections were parietal in 40%, occipital in 32%, and parietooccipital in 28% cases; 24% patients additionally underwent a resection of the posterior border of the temporal lobe...
January 18, 2017: Epilepsia
https://www.readbyqxmd.com/read/28087827/neuropsychological-outcome-following-frontal-lobectomy-for-pharmacoresistant-epilepsy-in-adults
#19
Robyn M Busch, Darlene P Floden, Lisa Ferguson, Shamseldeen Mahmoud, Audrina Mullane, Stephen Jones, Lara Jehi, William Bingaman, Imad M Najm
OBJECTIVE: This retrospective cohort study characterized cognitive and motor outcomes in a large sample of adults who underwent frontal lobe resections for treatment of pharmacoresistant epilepsy. METHODS: Ninety patients who underwent unilateral frontal lobe resection for epilepsy (42 language-dominant hemisphere/48 nondominant hemisphere) between 1989 and 2014 completed comprehensive preoperative and postoperative neuropsychological evaluations that included measures of verbal and nonverbal intellectual functioning, attention/working memory, processing speed, language, executive functioning, verbal and visual memory, and motor functioning...
January 13, 2017: Neurology
https://www.readbyqxmd.com/read/28078313/unilobar-surgery-for-symptomatic-epileptic-spasms
#20
Carmen Barba, Roberto Mai, Laura Grisotto, Francesca Gozzo, Simona Pellacani, Laura Tassi, Stefano Francione, Flavio Giordano, Francesco Cardinale, Renzo Guerrini
OBJECTIVE: To assess factors associated with favorable seizure outcome after surgery for symptomatic epileptic spasms and improve knowledge on pathophysiology of this seizure type. METHODS: Inclusion criteria were: (1) age between 6 months and 15 years at surgery; (2) active epileptic spasms; (3) follow-up after surgery >1 year. RESULTS: We retrospectively studied 80 children (aged 1.3 ± 2 years at seizure onset; 5.8 ± 4 years at surgery, 11...
January 2017: Annals of Clinical and Translational Neurology
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