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Neurosurgery

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https://www.readbyqxmd.com/read/28645214/sodium-fluorescein-facilitates-guided-sampling-of-diagnostic-tumor-tissue-in-nonenhancing-gliomas
#1
Stephen G Bowden, Justin A Neira, Brian J A Gill, Timothy H Ung, Zachary K Englander, George Zanazzi, Peter D Chang, Jorge Samanamud, Jack Grinband, Sameer A Sheth, Guy M McKhann, Michael B Sisti, Peter Canoll, Randy S D'Amico, Jeffrey N Bruce
BACKGROUND: Accurate tissue sampling in nonenhancing (NE) gliomas is a unique surgical challenge due to their intratumoral histological heterogeneity and absence of contrast enhancement as a guide for intraoperative stereotactic guidance. Instead, T2/fluid-attenuated inversion-recovery (FLAIR) hyperintensity on MRI is commonly used as an imaging surrogate for pathological tissue, but sampling from this region can yield nondiagnostic or underdiagnostic brain tissue. Sodium fluorescein is an intraoperative fluorescent dye that has a high predictive value for tumor identification in areas of contrast enhancement and NE in glioblastomas...
June 21, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28645208/in-memoriam-john-edward-kalsbeck-md-1928-2017
#2
Daniel H Fulkerson, Andrew Jea, Thomas G Luerssen
No abstract text is available yet for this article.
June 21, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28645205/aquaporin-positron-emission-tomography-differentiates-between-grade-iii-and-iv-human-astrocytoma
#3
Yuji Suzuki, Yukihiro Nakamura, Kenichi Yamada, Satoshi Kurabe, Kouichirou Okamoto, Hiroshi Aoki, Hiroki Kitaura, Akiyoshi Kakita, Yukihiko Fujii, Vincent J Huber, Hironaka Igarashi, Ingrid L Kwee, Tsutomu Nakada
BACKGROUND: Aquaporin (AQP) water channels play a significant role in mesenchymal microvascular proliferation and infiltrative growth. AQPs are highly expressed in malignant astrocytomas, and a positive correlation is observed between their expression levels and histological tumor grade. OBJECTIVE: To examine the utility of aquaporin positron emission tomography (PET) for differentiating between astrocytoma grade III and grade IV using the AQP radioligand [ 11 C]TGN-020...
June 21, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28645203/neurosurgical-randomized-controlled-trials-distance-travelled
#4
Tej D Azad, Anand Veeravagu, Vaishali Mittal, Rogelio Esparza, Eli Johnson, John P A Ioannidis, Gerald A Grant
BACKGROUND: The evidence base for many neurosurgical procedures has been limited. We performed a comprehensive and systematic analysis of study design, quality of reporting, and trial results of neurosurgical randomized controlled trials (RCTs). OBJECTIVE: To systematically assess the design and quality characteristics of neurosurgical RCTs. METHODS: From January 1961 to June 2016, RCTs with >5 patients assessing any 1 neurosurgical procedure against another procedure, nonsurgical treatment, or no treatment were retrieved from MEDLINE, Scopus, and Cochrane Library...
June 21, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28645194/predictors-of-treatment-response-and-survival-outcomes-in-meningioma-recurrence-with-atypical-or-anaplastic-histology
#5
Muhammad O Chohan, Christopher T Ryan, Ranjodh Singh, Ryan M Lanning, Anne S Reiner, Marc K Rosenblum, Viviane Tabar, Philip H Gutin
BACKGROUND: Recurrence rates for atypical and anaplastic meningiomas range between 9% and 50% after gross total resection and between 36% and 83% after subtotal resection. Optimal treatment of recurrent meningiomas exhibiting atypical/anaplastic histology is complicated because they are often refractory to both surgery and radiation. OBJECTIVE: To evaluate clinical determinants of recurrence and treatment-specific outcomes in patients with recurrent meningiomas exhibiting atypical/anaplastic histology at our institution...
June 21, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28645182/stereotactic-radiosurgery-for-brainstem-arteriovenous-malformations-a-multicenter-study
#6
Or Cohen-Inbar, Robert M Starke, Cheng-Chia Lee, Hideyuki Kano, Paul Huang, Douglas Kondziolka, Inga S Grills, Danilo Silva, Mohmoud Abbassy, Symeon Missios, Gene H Barnett, L Dade Lunsford, Jason P Sheehan
BACKGROUND: The management of brainstem arteriovenous malformations (bAVMs) is a formidable challenge. bAVMs harbor higher morbidity and mortality compared to other locations. OBJECTIVE: To review the outcomes following stereotactic radiosurgery (SRS) of bAVMs in a multicenter study. METHODS: Six medical centers contributed data from 205 patients through the International Gamma Knife Research Foundation. Median age was 32 yr (6-81). Median nidus volume was 1...
June 21, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28637201/size-is-the-most-important-predictor-of-aneurysm-rupture-among-multiple-cerebral-aneurysms-post-hoc-subgroup-analysis-of-unruptured-cerebral-aneurysm-study-japan
#7
Masaaki Shojima, Akio Morita, Hirofumi Nakatomi, Shinjiro Tominari
BACKGROUND: Multiple cerebral aneurysms are encountered in approximately 15% to 35% of patients harboring unruptured cerebral aneurysms. It would be of clinical value to determine which of them is most likely to rupture. OBJECTIVE: To characterize features of the ruptured aneurysm relative to other concomitant fellow aneurysms in patients with multiple cerebral aneurysms. METHODS: From a total of 5720 patients who were prospectively registered in the Unruptured Cerebral Aneurysm Study in Japan, a subgroup of patients with multiple cerebral aneurysms who developed subarachnoid hemorrhage was extracted for this post hoc analysis...
June 20, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28637175/multiple-subpial-transections-for-medically-refractory-epilepsy-a-disaggregated-review-of-patient-level-data
#8
John D Rolston, Hansen Deng, Doris D Wang, Dario J Englot, Edward F Chang
BACKGROUND: Multiple subpial transections (MST) are a treatment for seizure foci in nonresectable eloquent areas. OBJECTIVE: To systematically review patient-level data regarding MST. METHODS: Studies describing patient-level data for MST procedures were extracted from the Medline and PubMed databases, yielding a synthetic cohort of 212 patients from 34 studies. Data regarding seizure outcome, patient demographics, seizure type, surgery type, and complications were extracted and analyzed...
June 20, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28633510/in-reply-stereotactic-radiosurgery-for-cystic-vestibular-schwannomas
#9
Michael J Link
No abstract text is available yet for this article.
June 17, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28633492/letter-stereotactic-radiosurgery-for-cystic-vestibular-schwannomas
#10
Eduardo de Arnaldo Silva Vellutini, Matheus Fernandes de Oliveira
No abstract text is available yet for this article.
June 17, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28633462/in-reply-genealogy-of-training-in-vascular-neurosurgery
#11
Shakeel A Chowdhry, Robert F Spetzler
No abstract text is available yet for this article.
June 17, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28633411/surgeon-level-variability-in-outcomes-cost-and-comorbidity-adjusted-cost-for-elective-lumbar-decompression-and-fusion
#12
Silky Chotai, Ahilan Sivaganesan, John A Sielatycki, Kristin R Archer, Richard Call, Matthew J McGirt, Clinton J Devin
BACKGROUND: The costs and outcomes following degenerative spine surgery may vary from surgeon to surgeon. Patient factors such as comorbidities may increase the health care cost. These variations are not well studied. OBJECTIVE: To understand the variation in outcomes, costs, and comorbidity-adjusted cost for surgeons performing lumbar laminectomy and fusions surgery. METHODS: A total of 752 patients undergoing laminectomy and fusion, performed by 7 surgeons, were analyzed...
June 14, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28633408/risk-factors-for-readmission-with-cerebrospinal-fluid-leakage-within-30-d-of-vestibular-schwannoma-surgery
#13
Ali A Alattar, Brian R Hirshman, Brandon A McCutcheon, Clark C Chen, Thomas Alexander, Jeffrey Harris, Bob S Carter
BACKGROUND: Cerebrospinal fluid (CSF) leak is a well-recognized complication after surgical resection of vestibular schwannomas and is associated with a number of secondary complications, including readmission and meningitis. OBJECTIVE: To identify risk factors for and timing of 30-d readmission with CSF leak. METHODS: Patients who had undergone surgical resection of a vestibular schwannoma from 1995 to 2010 were identified in the California Office of Statewide Health Planning and Development database...
June 14, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28605557/practice-patterns-for-neurosurgical-utilization-and-outcome-in-acute-intracerebral-hemorrhage-intensive-blood-pressure-reduction-in-acute-cerebral-hemorrhage-trials-1-and-2-studies
#14
Rui Guo, David J Blacker, Xia Wang, Hisatomi Arima, Pablo M Lavados, Richard I Lindley, John Chalmers, Craig S Anderson, Thompson Robinson
BACKGROUND: The prognosis in acute spontaneous intracerebral hemorrhage (ICH) is related to hematoma volume, where >30 mL is commonly used to define large ICH as a threshold for neurosurgical decompression but without clear supporting evidence. OBJECTIVES: To determine the factors associated with large ICH and neurosurgical intervention among participants of the Intensive Blood Pressure Reduction in Acute Cerebral Hemorrhage Trials (INTERACT). METHODS: We performed pooled analysis of the pilot INTERACT1 (n = 404) and main INTERACT2 (n = 2839) studies of ICH patients (<6 h of onset) with elevated systolic blood pressure (SBP, 150-220 mm Hg) who were randomized to intensive (target SBP < 140 mm Hg) or contemporaneous guideline-recommended (target SBP < 180 mm Hg) management...
June 10, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28605552/impact-of-discharge-disposition-on-30-d-readmissions-following-elective-spine-surgery
#15
Raul A Vasquez, Silky Chotai, Thomas H Freeman, Harrison F Kay, Joseph S Cheng, Matthew J McGirt, Clinton J Devin
BACKGROUND: Readmissions are a significant economic burden on the health care system and increasingly being utilized as a metric of quality. Patients discharged to home vs an inpatient facility have different characteristics, which might influence the readmissions following spine surgery. OBJECTIVE: To determine the effect of discharge disposition on readmission rates and causes of readmission after spine surgery. METHODS: Patients enrolled in a prospective registry and undergoing elective spine surgery were analyzed...
June 10, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28605551/abc-2-method-does-not-accurately-predict-cerebral-arteriovenous-malformation-volume
#16
Christopher Roark, Venu Vadlamudi, Neeraj Chaudhary, Joseph J Gemmete, Joshua Seinfeld, B Gregory Thompson, Aditya S Pandey
BACKGROUND: Stereotactic radiosurgery (SRS) is a treatment option for cerebral arteriovenous malformations (AVMs) to prevent intracranial hemorrhage. The decision to proceed with SRS is usually based on calculated nidal volume. Physicians commonly use the ABC/2 formula, based on digital subtraction angiography (DSA), when counseling patients for SRS. OBJECTIVE: To determine whether AVM volume calculated using the ABC/2 method on DSA is accurate when compared to the exact volume calculated from thin-cut axial sections used for SRS planning...
June 10, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28605492/growth-related-major-recanalization-of-coiled-aneurysms-incidence-and-risk-factors
#17
Young Dae Cho, Jin Pyeong Jeon, Dong Hyun Yoo, Won-Sang Cho, Hyun-Seung Kang, Jeong Eun Kim, Moon Hee Han
BACKGROUND: Though endovascular techniques and procedural devices continue to advance, recurrence of embolized aneurysms is still problematic. Enlarging size during follow-up is the presumed basis of recanalization in some lesions, but such growth has not been adequately investigated. OBJECTIVE: To generate estimates of growth in coiled aneurysms with major recanalization, focusing on incidence and risk factors involved. METHODS: A cohort of 134 patients harboring 139 aneurysms were retrospectively reviewed, each subjected to re-embolization for major recanalization after initial coil embolization...
June 10, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28605486/aneurysm-morphology-and-prediction-of-rupture-an-international-study-of-unruptured-intracranial-aneurysms-analysis
#18
J Mocco, Robert D Brown, James C Torner, Ana W Capuano, Kyle M Fargen, Madhavan L Raghavan, David G Piepgras, Irene Meissner, John Huston Iii
BACKGROUND: There are conflicting data between natural history studies suggesting a very low risk of rupture for small, unruptured intracranial aneurysms and retrospective studies that have identified a much higher frequency of small, ruptured aneurysms than expected. OBJECTIVE: To use the prospective International Study of Unruptured Intracranial Aneurysms cohort to identify morphological characteristics predictive of unruptured intracranial aneurysm rupture. METHODS: A case-control design was used to analyze morphological characteristics associated with aneurysm rupture in the International Study of Unruptured Intracranial Aneurysms database...
June 10, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28605471/berlin-grading-system-can-stratify-the-onset-and-predict-perioperative-complications-in-adult-moyamoya-disease
#19
Daina Kashiwazaki, Naoki Akioka, Naoya Kuwayama, Kiyohiro Houkin, Marcus Czabanka, Peter Vajkoczy, Satoshi Kuroda
BACKGROUND: The grading system for moyamoya disease is not established. OBJECTIVE: To assess the usefulness of a recently proposed grading system for stratifying the clinical severity and predicting postoperative morbidity in adult moyamoya disease. METHODS: We investigated 176 hemispheres from 89 adult patients who were diagnosed with moyamoya disease in Japan. Their data were analyzed using the Berlin grading system with minor modifications...
June 10, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28605467/strategies-for-and-outcome-of-repeat-revascularization-surgery-for-moyamoya-disease-an-american-institutional-series
#20
Mario Teo, Jeremiah Johnson, Gary K Steinberg
BACKGROUND: Revascularization for moyamoya disease (MMD) effectively prevents future ischemic events. However, small subsets of patients with persistent or new symptoms due to inadequate collateralization require repeat revascularizations. OBJECTIVE: To investigate the clinical and radiological outcome of repeat revascularization in MMD patients with previous indirect or direct bypasses. METHODS: Single institution, retrospective analysis of a prospective MMD database...
June 10, 2017: Neurosurgery
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