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Neurosurgery

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https://www.readbyqxmd.com/read/28673040/evaluation-of-prognostic-factors-for-early-mortality-after-stereotactic-radiosurgery-for-brain-metastases-a-single-institutional-retrospective-review
#1
E Emily Bennett, Michael A Vogelbaum, Gene H Barnett, Lilyana Angelov, Samuel Chao, Erin Murphy, Jennifer Yu, John H Suh, Paul Elson, Glen H J Stevens, Alireza M Mohammadi
BACKGROUND: Stereotactic radiosurgery (SRS) is used commonly for patients with brain metastases (BM) to improve intracranial disease control. However, survival of these patients is often dictated by their systemic disease course. The value of SRS becomes less clear in patients with anticipated short survival. OBJECTIVE: To evaluate prognostic factors, which may predict early death (within 90 d) after SRS. METHODS: A total of 1427 patients with BM were treated with SRS at our institution (2000-2012)...
June 29, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28673029/predictive-factors-of-surgical-outcome-in-frontal-lobe-epilepsy-explored-with-stereoelectroencephalography
#2
Francesca Bonini, Aileen McGonigal, Didier Scavarda, Romain Carron, Jean Régis, Henry Dufour, Jean-Claude Péragut, Virginie Laguitton, Nathalie Villeneuve, Patrick Chauvel, Bernard Giusiano, Agnès Trébuchon, Fabrice Bartolomei
BACKGROUND: Resective surgery established treatment for pharmacoresistant frontal lobe epilepsy (FLE), but seizure outcome and prognostic indicators are poorly characterized and vary between studies. OBJECTIVE: To study long-term seizure outcome and identify prognostic factors. METHODS: We retrospectively analyzed 42 FLE patients having undergone surgical resection, mostly preceded by invasive recordings with stereoelectroencephalography (SEEG)...
June 29, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28658940/superior-prognostic-value-of-cumulative-intracranial-tumor-volume-relative-to-largest-intracranial-tumor-volume-stereotactic-radiosurgery-treated-brain-metastasis-patients
#3
Brian R Hirshman, Bayard Wilson, Mir Amaan Ali, James A Proudfoot, Takao Koiso, Osamu Nagano, Bob S Carter, Toru Serizawa, Masaaki Yamamoto, Clark C Chen
BACKGROUND: Two intracranial tumor volume variables have been shown to prognosticate survival of stereotactic-radiosurgery-treated brain metastasis patients: the largest intracranial tumor volume (LITV) and the cumulative intracranial tumor volume (CITV). OBJECTIVE: To determine whether the prognostic value of the Scored Index for Radiosurgery (SIR) model can be improved by replacing one of its components-LITV-with CITV. METHODS: We compared LITV and CITV in terms of their survival prognostication using a series of multivariable models that included known components of the SIR: age, Karnofsky Performance Score, status of extracranial disease, and the number of brain metastases...
June 27, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28658939/use-of-stereovision-for-intraoperative-coregistration-of-a-spinal-surgical-field-a-human-feasibility-study
#4
S Scott Lollis, Xiaoyao Fan, Linton Evans, Jonathan D Olson, Keith D Paulsen, David W Roberts, Sohail K Mirza, Songbai Ji
BACKGROUND: The use of image guidance during spinal surgery has been limited by several anatomic factors such as intervertebral segment motion and ineffective spine immobilization. In its current form, the surgical field is coregistered with a preoperative computed tomography (CT), often obtained in a different spinal confirmation, or with intraoperative cross-sectional imaging. Stereovision offers an alternative method of registration. OBJECTIVE: To demonstrate the feasibility of stereovision-mediated coregistration of a human spinal surgical field using a proof-of-principle study, and to provide preliminary assessments of the technique's accuracy...
June 27, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28658934/image-updating-for-brain-shift-compensation-during-resection
#5
Xiaoyao Fan, David W Roberts, Jonathan D Olson, Songbai Ji, Timothy J Schaewe, David A Simon, Keith D Paulsen
BACKGROUND: In open-cranial neurosurgery, preoperative magnetic resonance (pMR) images are typically coregistered for intraoperative guidance. Their accuracy can be significantly degraded by intraoperative brain deformation, especially when resection is involved. OBJECTIVE: To produce model updated MR (uMR) images to compensate for brain shift that occurred during resection, and evaluate the performance of the image-updating process in terms of accuracy and computational efficiency...
June 27, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28655208/accuracy-in-identifying-the-source-of-subarachnoid-hemorrhage-in-the-setting-of-multiple-intracranial-aneurysms
#6
Jennifer L Orning, Sophia F Shakur, Ali Alaraj, Mandana Behbahani, Fady T Charbel, Victor A Aletich, Sepideh Amin-Hanjani
BACKGROUND: Subarachnoid hemorrhage cases with multiple cerebral aneurysms frequently demonstrate a hemorrhage pattern that does not definitively delineate the source aneurysm. In these cases, rupture site is ascertained from angiographic features of the aneurysm such as size, morphology, and location. OBJECTIVE: To examine the frequency with which such features lead to misidentification of the ruptured aneurysm. METHODS: : Records of patients who underwent surgical clipping of a ruptured aneurysm at our institution between 2004 and 2014 and had multiple aneurysms were retrospectively reviewed...
June 26, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28655201/unplanned-reoperation-after-craniotomy-for-tumor-a-national-surgical-quality-improvement-program-analysis
#7
Hormuzdiyar H Dasenbrock, Sandra C Yan, Vamsi Chavakula, William B Gormley, Timothy R Smith, Elizabeth B Claus, Ian F Dunn
BACKGROUND: Reoperation has been increasingly utilized as a metric evaluating quality of care. OBJECTIVE: To evaluate the rate of, reasons for, and predictors of unplanned reoperation after craniotomy for tumor in a nationally accrued population. METHODS: Patients who underwent cranial tumor resection were extracted from the prospective National Surgical Quality Improvement Program registry (2012-2014). Multivariate logistic regression examined predictors of unplanned cranial reoperation...
June 26, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28645214/sodium-fluorescein-facilitates-guided-sampling-of-diagnostic-tumor-tissue-in-nonenhancing-gliomas
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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