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Shakir I Shakir, Luis Souhami, Kevin Petrecca, Jose João Mansure, Khushdeep Singh, Valerie Panet-Raymond, George Shenouda, Amal A Al-Odaini, Bassam Abdulkarim, Marie-Christine Guiot
OBJECTIVE The optimal adjuvant management for atypical meningiomas remains controversial. The aim of this study was to review long-term outcomes to identify potential prognostic factors for disease progression. METHODS From August 1992 to August 2013, 70 patients with atypical meningioma were treated at the authors' institution. Pathology revision was performed based on WHO 2007 criteria. Patients with multiple tumors, neurofibromatosis Type 2, or inadequate imaging follow-up were not eligible. The authors performed pre- and postoperative serial measurements of tumor volume from MRI...
January 19, 2018: Journal of Neurosurgery
Jung Ho Im, Je Beom Hong, Se Hoon Kim, Junjeong Choi, Jong Hee Chang, Jaeho Cho, Chang-Ok Suh
We assessed the appropriateness of current radiotherapy volume for WHO grade III gliomas. The records of 73 patients with WHO grade III gliomas who received postoperative radiotherapy between 2001 and 2013 were retrospectively reviewed. Based on the 2016 WHO classification, 25/73 (34.2%) patients had anaplastic oligodendroglioma (AO), IDH-mutant and 1p/19q-codeleted; 11/73 (15.1%) patients had anaplastic astrocytoma, IDH-mutant; and 37/73 (50.7%) patients had anaplastic astrocytoma, IDH-wildtype. The extent of resection (EOR) was total in 43 patients (58...
January 15, 2018: Scientific Reports
Seung Hyuck Jeon, Sung-Hye Park, Jin Wook Kim, Chul-Kee Park, Sun Ha Paek, Il Han Kim
We retrospectively evaluated an efficacy of adjuvant radiotherapy (RT) in the intracranial hemangiopericytoma (HPC) and analyzed prognostic factors influencing treatment outcomes. Among 49 patients diagnosed as localized intracranial HPC between 1995 and 2016, 31 patients received adjuvant RT after surgery; 26 with fractionated RT and 5 with stereotactic radiosurgery using Gamma Knife. After gross total resection (GTR) (n = 32) and subtotal resection (STR) (n = 17), histopathological grade was confirmed to be grade II (n = 9) or grade III (n = 40)...
January 11, 2018: Journal of Neuro-oncology
Xiaogang Tao, Jinqian Dong, Zonggang Hou, Shuyu Hao, Junting Zhang, Zhen Wu, Baiyun Liu
OBJECTIVE: Intracranial and intraspinal clear cell meningiomas (CCMs) are rarely reported because of their extremely low incidence, and the current understanding of CCM is poor. The purpose of this study was to analyze the incidence and the clinical, radiological, pathological, and prognostic features of intracranial and intraspinal CCMs. METHODS: Among 14310 cases of intracranial and intraspinal meningiomas that were surgically treated between 2006 and 2016 at Beijing Tian Tan Hospital, 56 were chosen for analysis and retrospectively reviewed...
January 8, 2018: World Neurosurgery
Reza Masaeli, Kavosh Zandsalimi, Zahra Lotfi, Lobat Tayebi
PURPOSE: Furcations are complicated periodontal defects. Untreated furcations lead to loss of the involved teeth and supporting tissues. It has been demonstrated that regenerative biomaterials are beneficial in reconstruction of the bone surrounding furcation-affected teeth. These biomaterials range from bone grafts and nonresorbable/resorbable barrier membranes to biologics that are able to trigger inactive regenerative processes in periodontal tissues. Selection of appropriate material(s) to treat furcations is challenging...
January 11, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
Mingyu Chen, Danqi Chen, Jian Xu, Ming Xu, Ping Zhong
BACKGROUND: Solitary intracranial metastases of differentiated thyroid carcinoma (DTC) are rare and the management is still controversial. This research is aim to seek for the suitable therapeutic methods of this disease. METHODS: We retrospectively studied 11 pathologically confirmed cases of solitary intracranial metastases of DTC in a single institution from January 2000 to December 2016 and systematically reviewed 52 cases of this disease out of 416 cases presented in the literature on Pubmed...
January 6, 2018: World Neurosurgery
Laura van Iersel, Ruud W H Meijneke, Antoinette Y N Schouten-van Meeteren, Liesbeth Reneman, Maartje M de Win, A S Paul van Trotsenburg, Peter H Bisschop, Martijn J J Finken, W Peter Vandertop, Wouter R van Furth, Hanneke M van Santen
BACKGROUND: Hypothalamic obesity (HO) is a major concern in patients treated for craniopharyngioma (CP). The influence of degree of resection on development of HO, event-free survival (EFS), and neuroendocrine sequelae is an issue of debate. PROCEDURE: A retrospective cohort consisting of all CP patients treated between 2002 and 2012 in two university hospitals was identified. Multivariable logistic regression was used to study the associations between preoperative BMI, age at diagnosis, tumor volume, performed surgical resection, and presence of HO at follow-up...
January 4, 2018: Pediatric Blood & Cancer
Richard Menger, David E Connor, Alvin Y Chan, Gary Jain, Anil Nanda
Objective Meningioma recurrence after resection is likely influenced by multiple surgical and histologic factors. In this study, the degree of resection and tumor immunoreactivity to MIB-1 (i.e., Ki-67 labeling index (LI)) are described in recurrent and non-recurrent meningioma cases. Methods Data regarding tumor location, the degree of resection, histologic features, and the degree of Ki-67 positivity were collected for 32 patients treated between September 2008 and July 2009. Follow-up for recurrence was assessed through five years...
November 3, 2017: Curēus
Itsumi Yoshimoto, Jun-Ichi Sasaki, Ririko Tsuboi, Satoshi Yamaguchi, Haruaki Kitagawa, Satoshi Imazato
OBJECTIVE: Various commercial products are available for guided tissue regeneration (GTR) therapy; however, they do not combine biosafety with the ability to control cell function. The purpose of this study was to evaluate the physicochemical and biological characteristics of the novel bilayer biodegradable poly(lactic-co-glycolic acid) (PLGA) membrane, and to assess whether the bilayer PLGA membrane could be used for periodontal tissue regeneration. METHODS: Bilayer biodegradable membrane was fabricated thorough a two-step freezing and lyophilization process using PLGA solution...
January 5, 2018: Dental Materials: Official Publication of the Academy of Dental Materials
Reem D Almutairi, Ivo S Muskens, David J Cote, Mark D Dijkman, Vasileios K Kavouridis, Erin Crocker, Kholoud Ghazawi, Marike L D Broekman, Timothy R Smith, Rania A Mekary, Hasan A Zaidi
BACKGROUND: Microscopic transsphenoidal surgery (mTSS) is a well-established method to address adenomas of the pituitary gland. Endoscopic transsphenoidal surgery (eTSS) has become a viable alternative, however. Advocates suggest that the greater illumination, panoramic visualization, and angled endoscopic views afforded by eTSS may allow for higher rates of gross total tumor resection (GTR). The aim of this meta-analysis was to determine the rate of GTR using mTSS and eTSS. METHODS: A meta-analysis of the literature was conducted using PubMed, EMBASE, and Cochrane databases through July 2017 in accordance with PRISMA guidelines...
January 6, 2018: Acta Neurochirurgica
Liang Xia, Chenyan Fang, Gao Chen, Caixing Sun
BACKGROUND: Surgical resection is necessary to conduct a pathological biopsy and to achieve a reduction of intracranial pressure in low-grade gliomas patients. This study aimed to determine whether a greater extent of resection would increase the overall 5-year and 10-year survival of patients with low-grade gliomas. METHODS: The studies addressing relationship between the extent of resection and the prognosis of low-grade gliomas updated until March 2017 were systematically searched in two databases (Pubmed and EMBASE)...
January 6, 2018: BMC Cancer
Yixuan Zhai, Jiwei Bai, Shuai Wang, Hua Gao, Mingxuan Li, Chuzhong Li, Songbai Gui, Yazhuo Zhang
OBJECTIVE In this study, the authors' aim was to research clinical features and prognostic factors in patients harboring clival chordomas and explore the relationship between platelet-derived growth factor receptor-β (PDGFR-β) expression and tumor invasion and prognosis of clival chordoma. METHODS A total of 242 patients were retrospectively analyzed. Clinical information, including extent of resection, Al-Mefty classification, postoperative complications, and postoperative radiotherapy, was reviewed. Kaplan-Meier analysis was used to estimate survival time...
January 5, 2018: Journal of Neurosurgery
Hélène Martin Thomé, David Bourdin, Nicolas Strube, Afchine Saffarzadeh, Jean-Francois Morlock, Guillaume Campard, Charles Evanno, Alain Hoornaert, Pierre Layrolle
For the regeneration of small osseous defects, dental membranes are commonly used in oral and maxillofacial surgery. A new synthetic resorbable membrane has recently demonstrated its biocompatibility and bone regeneration capacity in preclinical studies. This membrane is made of poly-D,L-lactic/glycolic acid 85/15 (PLGA), has a bi-layered structure with a dense film to prevent gingival epithelial cell invasion and a micro-fibrous layer to support osteogenic cells and bone healing. This membrane completely degrades by hydrolysis in 4 to 6 months without signs of inflammation...
January 5, 2018: Journal of Oral Implantology
Yu-Chi Wang, Chi-Cheng Chuang, Po-Hsun Tu, Kuo-Chen Wei, Chieh-Tsai Wu, Cheng-Chi Lee, Zhuo-Hao Liu, Pin-Yuan Chen
PURPOSE: Seizures in rare atypical and malignant meningiomas were significantly under-studied. Our aim was to examine the rates, predictors, and seizure control in these meningiomas, and to analyze associations between clinical characteristics and seizure free survival (SFS) following surgical resection in an Asian population. METHODS: We retrospectively analyzed 102 patients with atypical or malignant meningiomas. Seizures occurring before and after the operation were reviewed...
December 17, 2017: Epilepsy Research
Jaume Capellades, Josep Puig, Sira Domenech, Teresa Pujol, Laura Oleaga, Angels Camins, Carles Majós, Rocio Diaz, Christian de Quintana, Pilar Teixidor, Gerard Conesa, Gerard Plans, Josep Gonzalez, Natalia García-Balañà, Jose Maria Velarde, Carmen Balaña
To assess the value of resection in glioblastoma based on pre-surgical tumor characteristics and a subsequent staging system. The lack of a staging system for glioblastoma hinders the analysis of treatment outcome. We classified 292 uniformly treated glioblastoma patients as stage I, II, or III based on tumor size, location, and eloquence and then analyzed the impact of the extent of resection. We classified 62% of patients as stage I, 25.3% as stage II, and 12.7% as stage III. Gross total resection (GTR) was performed mainly in stage I rather than stage II or III patients (79...
December 28, 2017: Journal of Neuro-oncology
N Svoboda, O Bradac, P de Lacy, V Benes
BACKGROUND: Overall (OS) and progression-free survival (PFS) of patients undergoing spinal ependymoma resection has been frequently reported. Contrarily, OS and PFS of purely intramedullary ependymomas have not been clearly determined yet. METHODS: The data of 37 patients undergoing resection of an intramedullary ependymoma (IE) from January 2000 to December 2016 were analysed retrospectively. RESULTS: The mean age was 46 years. The male:female ratio was 24:13...
December 26, 2017: Acta Neurochirurgica
Wuyang Yang, Tao Xu, Tomas Garzon-Muvdi, Changchuan Jiang, Judy Huang, Kaisorn L Chaichana
INTRODUCTION: Aggressiveness of surgical resection for periventricular/ventricular high-grade gliomas(HGGs) is determined by operative risks and assumed effectiveness of radiation therapy(RT) on residual tumor. We aim to clarify the impact of surgery and postoperative RT on patient survival in a population-based study. METHODS: This is a population-based study utilizing the SEER database. Patients with ventricular malignant tumor were screened for HGGs. In accordance with the WHO 2016 classification, we included cases with "Diffuse astrocytic and oligodendroglial tumors", "Other astrocytic tumors", "Ependymal tumors", and "Other gliomas"...
December 16, 2017: World Neurosurgery
Konstantinos N Paterakis, Alexandros Brotis, Efthimios Dardiotis, Theofanis Giannis, Christos Tzerefos, Kostas N Fountas
Ewing's sarcoma (ES) is an aggressive bone and soft tissue sarcoma that usually affects adolescents and young adults. ES occasionally presents as an intradural-extramedullary lesion of the spine. Our aim was to study the role of the multimodality treatment on the survival (overall survival, recurrence-free survival, and metastasis-free survival) of patients with intradural-extramedullary Ewing's sarcoma. Pubmed, EMBASE, Scopus, Web of Science, Cochrane Reviews were searched up to January 2017, using as mesh terms "intradural extramedullary", "Ewing's sarcoma", AND "treatment"...
December 7, 2017: Clinical Neurology and Neurosurgery
Fabian Cieplik, Laura Tabenski, Karl-Anton Hiller, Gottfried Schmalz, Wolfgang Buchalla, Michael Christgau
AIM: To investigate the clinical long-term outcomes 13 years following guided tissue regeneration (GTR) in deep intrabony defects with and without additional application of autogenous platelet concentrate (APC). METHODS: In 25 patients, two deep contra-lateral intrabony defects were treated according to GTR using ß-TCP and bio-resorbable membranes. In test defects, APC was applied additionally. After 13 years, clinical healing results were assessed and compared to results at baseline and after 1 year...
December 15, 2017: Journal of Clinical Periodontology
Niloofar Jenabian, Sina Haghanifar, Hodis Ehsani, Ehsan Zahedi, Masumeh Haghpanah
Background: The treatment of furcation area defects remained as a challenging issue in periodontal treatments. Regeneration treatment of furcation defects is the most discussed periodontal treatment. Although not completely hopeless in prognosis, the presence of the furcation involvement significantly increases the chance of tooth loss. The current research was conductedeto compare theeadditive effect of combined guided tissue regeneration (GTR) and platelet-rich growth factor (PRGF) on the treatment of furcation bony defects...
November 2017: Dental Research Journal
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