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https://www.readbyqxmd.com/read/29147864/impact-of-who-2016-update-of-brain-tumor-classification-molecular-markers-and-clinical-outcomes-in-pleomorphic-xanthoastrocytoma
#1
Raees Tonse, Tejpal Gupta, Sridhar Epari, Jayant Goda Shastri, Mamta Gurav, Nazia Bano, Rakesh Jalali
We present outcomes of pleomorphic xanthoastrocytoma (PXA) and correlate the impact of clinical, pathologic and molecular markers. Between 2006 and 2016, 37 patients with histologically verified PXA form the study cohort. All underwent maximal safe resection; those who had good resection and young age were observed. Adjuvant radiotherapy was given in patients with some atypical features such as high MIB-1 index (> 5%), residual disease or at recurrence. Patients with anaplastic PXA were administered adjuvant radiotherapy and systemic therapy...
November 16, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29143958/intraspinal-mesenchymal-chondrosarcoma-report-of-a-pediatric-case-and-literature-review
#2
Angela Di Giannatale, Marta Colletti, Ida Russo, Valentina Ferruzzi, Vito Andrea Dell' Anna, Raffaele Cozza, Giovanna Stefania Colafati, Raffaella Messina, Angela Mastronuzzi, Rita De Vito, Giuseppe Maria Milano
PURPOSE: Mesenchymal chondrosarcoma (MCS) is an aggressive variant of chondrosarcoma and is a rare tumor, particularly within the pediatric population. Commonly, MCS originates in the bone, but it can also arise in extraskeletal sites, such as the brain and the intraspinal area. Due to the rarity of this tumor, there are no guidelines for its optimal treatment. METHODS: We report a case of intradural extramedullary MCS, located at the T11-T12 level, in a 14-year-old male...
November 15, 2017: Tumori
https://www.readbyqxmd.com/read/29135884/prognostic-factors-and-treatment-of-spinal-astrocytomas-a-multi-institutional-cohort-analysis
#3
Yingjie Zou, James Sun, Yangying Zhou, Harrison Xiao Bai, Xiangyan Huang, Ranjith Babu, Alessandro Landi, Kap Sum Foong, Zishu Zhang, John Woo, Yongguang Tao, Xuejun Li, Xiangqi Tang, Bo Xiao, Paul Zhang, Li Yang
STUDY DESIGN: Retrospective cohort analysis of patients with spinal astrocytoma from multi-institutional data and the literature. OBJECTIVE: To determine the prognostic factors, treatment, and survival of patients. SUMMARY OF BACKGROUND DATA: Our current understanding of the epidemiology, prognosis and optimal treatment of spinal astrocytoma is limited. The literature is confined to case reports or small institutional case series. METHOD: Patient demographics, tumor characteristics, treatments, and outcomes were extracted...
November 10, 2017: Spine
https://www.readbyqxmd.com/read/29134166/anterior-extension-of-tumor-is-as-important-as-tumor-size-to-facial-nerve-outcome-and-extent-of-resection-for-vestibular-schwannomas
#4
Ricky H Wong, William R Copeland, Jeffrey T Jacob, Sananthan Sivakanthan, Jamie J Van Gompel, Harry van Loveren, Michael J Link, Siviero Agazzi
Objectives  We examined vestibular schwannoma tumor dimension and direction of growth to determine whether these correlate with facial nerve outcome as well as extent of resection (EOR). Design  Retrospective review of prospectively maintained databases. Participants  206 patients were a part of this study. Main Outcome Measures  Tumor dimensions were measured using preoperative magnetic resonance imaging, and a series of ratios were then calculated to further characterize tumor dimension. Regression analyses were performed to investigate correlation with facial nerve outcome and EOR...
December 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29131312/gross-total-resection-and-adjuvant-radiotherapy-most-significant-predictors-of-improved-survival-in-patients-with-atypical-meningioma
#5
Nicholas R Rydzewski, Maciej S Lesniak, James P Chandler, John A Kalapurakal, Erqi Pollom, Matthew C Tate, Orin Bloch, Timothy Kruser, Prarthana Dalal, Sean Sachdev
BACKGROUND: Atypical and malignant meningiomas are far less common than benign meningiomas. As aggressive lesions, they are prone to local recurrence and may lead to decreased survival. Although malignant meningiomas typically are treated with maximal surgical resection and adjuvant radiotherapy (RT), to the authors' knowledge the optimal treatment for atypical lesions remains to be defined. There are limited prospective data in this setting. METHODS: The National Cancer Data Base was queried to investigate cases of histologically confirmed meningiomas diagnosed from 2004 to 2014...
November 13, 2017: Cancer
https://www.readbyqxmd.com/read/29127655/the-endoscopic-endonasal-approach-is-not-superior-to-the-microscopic-transcranial-approach-for-anterior-skull-base-meningiomas-a-meta-analysis
#6
Ivo S Muskens, Vanessa Briceno, Tom L Ouwehand, Joseph P Castlen, William B Gormley, Linda S Aglio, Amir H Zamanipoor Najafabadi, Wouter R van Furth, Timothy R Smith, Rania A Mekary, Marike L D Broekman
OBJECT: In the past decade, the endonasal transsphenoidal approach (eTSA) has become an alternative to the microsurgical transcranial approach (mTCA) for tuberculum sellae meningiomas (TSMs) and olfactory groove meningiomas (OGMs). The aim of this meta-analysis was to evaluate which approach offered the best surgical outcomes. METHODS: A systematic review of the literature from 2004 and meta-analysis were conducted in accordance with the PRISMA guidelines. Pooled incidence was calculated for gross total resection (GTR), visual improvement, cerebrospinal fluid (CSF) leak, intraoperative arterial injury, and mortality, comparing eTSA and mTCA, with p-interaction values...
November 10, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29125106/follow-up-results-and-clinical-significance-of-magnetic-resonance-spectroscopy-combined-with-fluorescence-microscopy-in-resection-of-high-grade-supra-tentoria-gliomas
#7
Hai-Long Tian, Yu-Liang Zu, Wei He, Ning-Ning Zhang, Yi-Hua Wang, Zhen-Tao Guo, Chao-Chao Wang, Bin Jiang, Xin Yin, Zhi-Gang Wang
Objective To investigate the clinical effectiveness of magnetic resonance spectroscopy (MRS) combined with sodium fluorescein(FL) in the treatment of high grade gliomas(HGG). Methods From August 2013 to 2015 November,the clinical data of 72 supratentorial HGG(WHO grade Ⅲ-Ⅳ) patients who had received surgical treatment in our hospital were retrospectively studied,among whom 43 cases received MRS combined with intra-perative FL navigation(observation group),and 29 cases only received conventional surgery(control group)...
October 30, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/29124069/sodium-fluorescein-guided-resection-under-the-yellow-560%C3%A2-nm-surgical-microscope-filter-in-malignant-gliomas-our-first-38-cases-experience
#8
Ningning Zhang, Hailong Tian, Dezhang Huang, Xianbing Meng, Wenqiang Guo, Chaochao Wang, Xin Yin, Hongying Zhang, Bin Jiang, Zheng He, Zhigang Wang
Objective: Sodium fluorescein (FL) had been safely used in fluorescence-guided microsurgery for imaging various brain tumors. Under the YELLOW 560 nm surgical microscope filter, low-dose FL as a fluorescent dye helps in visualization. Our study investigated the safety and efficacy of this innovative technique in malignant glioma (MG) patients. Patients and Method: 38 patients suffering from MGs confirmed by pathology underwent FL-guided resection under YELLOW 560 nm surgical microscope filter...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29121788/fluorescence-image-guided-neurosurgery
#9
Sadao Kaneko, Muftah S Eljamel
Surgery plays an important role in the management of high-grade gliomas (HGG) and imparts significant tumor-free and overall survival advantages. However HGG margins are often invisible, making their gross total resection (GTR) a difficult task. Hence intraoperative technology such as intraoperative fluorescence was a revolutionary discovery. A critical literature review revealed fluorescence improved the GTR of HGG from 36% using standard surgery to 74.5 and 84.4% using aminolevulinic acid (ALA) or fluorescein (FLCN), respectively...
November 2017: Future Oncology
https://www.readbyqxmd.com/read/29121778/intraoperative-image-guided-surgery-in-neuro-oncology-with-specific-focus-on-high-grade-gliomas
#10
Syed O Mahboob, Muftah Eljamel
Surgery is paramount in glioma management and extent of resection is an independent significant prognostic factor. However, these tumors are often invisible intraoperatively. Hence imaging plays an important role in surgical guidance. A critical literature review, using MEDLINE/PubMed service was carried out. It demonstrated a gross total resection (GTR) with neuronavigation (NNS) of 31-36%, adding 5-aminolevulinic acid or fluorescein fluorescence, or intraoperative ultrasound or MRI improved GTR to 69.1, 84...
November 2017: Future Oncology
https://www.readbyqxmd.com/read/29115718/impact-of-radiation-therapy-and-extent-of-resection-for-ependymoma-in-young-children-a-population-based-study
#11
C A Snider, K Yang, S C Mack, J H Suh, S T Chao, T E Merchant, E S Murphy
BACKGROUND: Young children with posterior fossa ependymoma (PF-EPN) have a worse prognosis than older children, and they have a unique molecular profile (PF-EPN-A subtype). Alternative treatment strategies are often used in these young patients, and their prognostic factors are less clear. METHODS: We characterized the prognostic factors and treatment outcomes of 482 patients between ages 0 and 3 years with the diagnosis of ependymoma identified from the Surveillance, Epidemiology, and End Results registry (1973-2013)...
November 8, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29102237/patient-and-treatment-factors-associated-with-survival-among-pediatric-glioblastoma-patients-a-surveillance-epidemiology-and-end-results-study
#12
Sandi Lam, Yimo Lin, Pascal Zinn, Jack Su, I-Wen Pan
Glioblastoma (GBM) is a rare malignancy in children. The United States Surveillance, Epidemiology, and End Results (SEER) database allows large-scale analyses of clinical characteristics and prognostic features. We used it to study patients aged <20 years with histologically confirmed GBM (2000-2010) and examined the relationship between patient demographics, tumor characteristics, patterns of treatment, and outcomes. The primary outcome was disease-specific survival. 302 subjects were identified, with median age 11 years...
October 25, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29050974/liquefaction-of-ground-tire-rubber-at-low-temperature
#13
Xiangyun Cheng, Pan Song, Xinyu Zhao, Zonglin Peng, Shifeng Wang
Low-temperature liquefaction has been investigated as a novel method for recycling ground tire rubber (GTR) into liquid using an environmentally benign process. The liquefaction was carried out at different temperatures (140, 160 and 180 °C) over variable time ranges (2-24 h) by blending the GTR with aromatic oil in a range from 0 to 100 parts per hundred rubber (phr). The liquefied GTR was separated into sol (the soluble fraction of rubber which can be extracted with toluene) and gel fractions (the solid fraction obtained after extraction) to evaluate the reclaiming efficiency...
October 16, 2017: Waste Management
https://www.readbyqxmd.com/read/29040698/clinical-outcome-after-endoscopic-endonasal-resection-of-tuberculum-sella-meningiomas
#14
Khaled Elshazly, Varun R Kshettry, Christopher J Farrell, Gurston Nyquist, Marc Rosen, James J Evans
BACKGROUND: In select cases, the endoscopic endonasal approach (EEA) has distinct advantages for resection of tuberculum sella meningiomas (TSM). OBJECTIVE: To report the extent of resection (EOR), complication rates, and outcomes in a large series of TSM treated by the EEA. METHODS: Twenty-five consecutive TSM cases treated by EEA from 2008 to 2016 were retrospectively reviewed. Patient history, imaging, volumetric EOR, complications, and outcomes are presented...
October 10, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29033377/proposed-treatment-paradigm-for-intracranial-chondrosarcomas-based-on-multidisciplinary-coordination
#15
Da Li, Jian-Cong Weng, Gui-Jun Zhang, Shu-Yu Hao, Jie Tang, Li-Wei Zhang, Liang Wang, Zhen Wu, Wang Jia, Jun-Ting Zhang
OBJECTIVES: There was no consensus regarding the treatment of intracranial chondrosarcoma (CSA). The study aimed to evaluate the adverse factors for progression-free survival (PFS) and overall survival (OS) and to propose a treatment strategy for CSA. METHODS: The clinical chart and radiographic data of 106 consecutive cases (mesenchymal and conventional CSA in 18 and 88 patients, respectively) of surgically treated CSAs were retrospectively reviewed. RESULTS: Gross total resection was achieved in 43 patients (40...
October 13, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29017976/outcomes-after-transcranial-and-endoscopic-endonasal-approach-for-tuberculum-meningiomas-a-retrospective-comparison
#16
Sang Woo Song, Yong Hwy Kim, Jin Wook Kim, Chul-Kee Park, Jung Eun Kim, Dong Gyu Kim, Young-Cho Koh, Hee-Won Jung
BACKGROUND: Degree of resection and visual outcome are the main concerns in the surgical resection of tuberculum sellae meningioma (TSM). In addition to the transcranial approach (TCA), the endoscopic endonasal approach (EEA) has been used increasingly. However, the controversy regarding the optimal surgical approach is not clearly resolved. METHODS: We compared the surgical outcomes of each approach for TSMs from 44 patients receiving EEA and 40 patients receiving TCA in 2 institutions between 2004 and 2015...
October 7, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28989289/epidemiology-diagnosis-and-optimal-management-of-glioma-in-adolescents-and-young-adults
#17
REVIEW
Tejan P Diwanji, Alexander Engelman, James W Snider, Pranshu Mohindra
Neoplasms of the central nervous system (CNS) are the most frequently encountered solid tumors of childhood, but are less common in adolescents and young adults (AYA), aged 15-39 years. Gliomas account for 29%-35% of the CNS tumors in AYA, with approximately two-thirds being low-grade glioma (LGG) and the remaining being high-grade glioma (HGG). We review the epidemiology, work-up, and management of LGG and HGG, focusing on the particular issues faced by the AYA population relative to pediatric and adult populations...
2017: Adolescent Health, Medicine and Therapeutics
https://www.readbyqxmd.com/read/28987849/who-grade-ii-meningiomas-the-role-of-adjuvant-salvage-gamma-knife-surgery-after-initial-surgery-and-prognostic-factor-assessment
#18
Xueyou Liu, Baoyin Shan, Mengmeng Wang, Jianguo Xu
OBJECTIVE: This study was performed to evaluate the efficiency of gamma knife surgery (GKS) on reducing recurrence for World Health Organization (WHO) grade II meningiomas after surgery, and to define the risk factors associated with tumor recurrence/progression and patient's death. METHODS: This retrospective study included 75 patients who were diagnosed with WHO grade II meningiomas after initial surgery. Kaplan-Meier method with log-rank test was used to calculate the survival curves...
October 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28986237/compositional-heterogeneity-in-true-bug-mitochondrial-phylogenomics
#19
Yingqi Liu, Fan Song, Pei Jiang, John-James Wilson, Wanzhi Cai, Hu Li
Mitochondrial phylogenomics is often controversial, in particular for inferring deep relationships. The recent rapid increase of mitochondrial genome data provides opportunities for better phylogenetic estimates and assessment of potential biases resulting from heterogeneity in nucleotide composition and mutation rates. Here, we gathered 76 mitochondrial genome sequences for Heteroptera representing all seven infraorders, including 17 newly sequenced mitochondrial genomes. We found strong heterogeneity in base composition and contrasting evolutionary rates among heteropteran mitochondrial genomes, which affected analyses with various datasets and partitioning schemes under site-homogeneous models and produced false groupings of unrelated taxa exhibiting similar base composition and accelerated evolutionary rates...
October 3, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28984517/intermediate-risk-meningioma-initial-outcomes-from-nrg-oncology-rtog-0539
#20
Leland Rogers, Peixin Zhang, Michael A Vogelbaum, Arie Perry, Lynn S Ashby, Jignesh M Modi, Anthony M Alleman, James Galvin, David Brachman, Joseph M Jenrette, John De Groot, Joseph A Bovi, Maria Werner-Wasik, Jonathan P S Knisely, Minesh P Mehta
OBJECTIVE This is the first clinical outcomes report of NRG Oncology RTOG 0539, detailing the primary endpoint, 3-year progression-free survival (PFS), compared with a predefined historical control for intermediate-risk meningioma, and secondarily evaluating overall survival (OS), local failure, and prospectively scored adverse events (AEs). METHODS NRG Oncology RTOG 0539 was a Phase II clinical trial allocating meningioma patients to 1 of 3 prognostic groups and management strategies according to WHO grade, recurrence status, and resection extent...
October 6, 2017: Journal of Neurosurgery
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