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Meningioma

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https://www.readbyqxmd.com/read/28651379/klf4-is-a-tumor-suppressor-in-anaplastic-meningioma-stem-like-cells-and-human-meningiomas
#1
Hailiang Tang, Xuanchun Wang, Hongda Zhu, Lingyang Hua, Jingrun Li, Qing Xie, Xiancheng Chen, Tao Zhang, Ye Gong
Meningiomas are the most common primary tumors in central nervous system. While recent studies have revealed genetic clues to lower grade human meningiomas, the molecular determinants driving the progression and recurrence of anaplastic meningioma, the most malignant subtype with a low prevalence but high morbidity, are still poorly understood. It has been proposed that high recurrence rates of malignant meningiomas are linked to cancer stem cells. Indeed, tumor stem-like cells have been isolated from various meningioma subtypes, but never been obtained from anaplastic meningioma...
June 26, 2017: Journal of Molecular Cell Biology
https://www.readbyqxmd.com/read/28649509/fabry-disease-four-case-reports-of-meningioma-and-a-review-of-the-literature-on-other-malignancies
#2
Beth L Thurberg, Dominique P Germain, Fernando Perretta, Iulia E Jurca-Simina, Juan M Politei
Fabry disease (FD) is an X-linked lysosomal storage disorder caused by loss of function mutations in the GLA gene at Xq22 with subsequent functional deficiency of alpha-galactosidase A, resulting in the accumulation of globotriaosylceramide (GL-3 or Gb3) in multiple cells types throughout the body. As with other rare metabolic disorders, little is known about the incidence of malignancies in these populations and the relationship to the underlying disease, if any. We report the occurrence of meningioma in four female patients with Fabry disease...
June 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28648002/-application-value-of-whole-brain-3d-artery-spin-labeling-in-diagnosis-of-intracranial-tumors
#3
Q Q Zhao, Q X Yang, G X Xu, Y C Lü, D L Rong, L Liu, R Zhang
Objective: To investigate the perfusion characteristics of arterial spin labeling (ASL) in intracranial tumor and its application value in classification. Methods: The clinical, pathological and imaging data of 44 patients with gliomas confirmed by pathology were analyzed retrospectively, including 9 low grade gliomas, 15 high grade gliomas, 11 cases of meningiomas, 6 cases of neurilemmoma, 3 cases of metastatic tumors.Conventional plain scan, 3D- ASL and MRI dynamic enhanced imaging (DSC-MRI) were performed...
June 20, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28647417/recurrent-thromboembolic-events-after-ischemic-stroke-in-patients-with-primary-brain-tumors
#4
Neal S Parikh, Jaclyn E Burch, Hooman Kamel, Lisa M DeAngelis, Babak B Navi
BACKGROUND: Stroke mechanisms and the risk of recurrent thromboembolism are incompletely understood in patients with primary brain tumors. We sought to better delineate these important clinical features. METHODS: We performed a retrospective cohort study of adults with primary brain tumors diagnosed with magnetic resonance imaging-confirmed acute ischemic stroke at the Memorial Sloan Kettering Cancer Center from 2005 to 2015. Study neurologists collected data on patients' cancer history, stroke risk factors, treatments, and outcomes...
June 21, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28645604/posterior-paramedian-approach-to-a-ventrally-located-spinal-meningioma
#5
Han Soo Chang
BACKGROUND: To approach a ventral spinal pathology, a lateral viewing angle is often required. However, lateral approaches to the spine are usually more technically demanding and require certain amount of surgical expertise. In this report, we describe a simple and easy technique to obtain the lateral viewing angle to the ventral spinal pathology. CASE DESCRIPTION: The technique is demonstrated in a ventrally located meningioma at C2 level. Axial magnetic resonance imaging (MRI) showed a square posterior shift of the spinal cord with little lateral space, which necessitated a more lateral viewing angle than the conventional posterior approach...
June 20, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28645591/surgical-repair-of-iatrogenic-transverse-sigmoid-sinus-laceration-with-a-dural-flap-during-skull-base-tumor-surgery-a-technical-case-report
#6
Gerald S Oh, Gregory D Arnone, Hussam Abou-Al-Shaar, Ashley L Barks, Andrew Wong, Fady T Charbel
BACKGROUND: Injury to cerebral venous sinuses during craniotomy procedures can cause significant blood loss or venous air embolism potentially leading to serious morbidity or mortality. When iatrogenic sinus injuries occur, it is essential to promptly obtain hemostasis and repair the sinus defect. CASE DESCRIPTION: The authors report a 43-year-old female that sustained a transverse-sigmoid sinus injury during a retrosigmoid craniotomy for resection of a cerebellopontine angle meningioma...
June 20, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28645590/endoscopic-supracerebellar-transtentorial-approach-to-the-atrium-of-the-lateral-ventricle-preliminary-surgical-and-optical-considerations
#7
Tao Xie, Linjun Zhou, Xiaobiao Zhang, Wei Sun, Hailin Ding, Tengfei Liu, Ye Gu, Chongjing Sun, Fan Hu, Wei Zhu
OBJECTIVE: To report the operative techniques of the endoscopic supracerebellar transtentorial approach (ESTA) to the atrium of the lateral ventricle, especially focusing on the role of the endoscope and analyzing optically related issues. METHODS: A retrospective data review was performed on five patients with lesions in the atrium of the lateral ventricle undergoing the ESTA. The patients were positioned in the three-quarters prone position, and a paramidline linear incision was used...
June 20, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28645194/predictors-of-treatment-response-and-survival-outcomes-in-meningioma-recurrence-with-atypical-or-anaplastic-histology
#8
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/28644098/intracranial-solitary-fibrous-tumors-hemangiopericytomas-first-report-of-malignant-progression
#9
Caroline Apra, Karima Mokhtari, Philippe Cornu, Matthieu Peyre, Michel Kalamarides
OBJECTIVE Meningeal solitary fibrous tumors/hemangiopericytomas (MSFTs/HPCs) are rare intracranial tumors resembling meningiomas. Their classification was redefined in 2016 by the World Health Organization (WHO) as benign Grade I fibrohyaline type, intermediate Grade II hypercellular type, and malignant highly mitotic Grade III. This grouping is based on common histological features and identification of a common NAB2-STAT6 fusion. METHODS The authors retrospectively identified 49 cases of MSFT/HPC. Clinical data were obtained from the medical records, and all cases were analyzed according to this new 2016 WHO grading classification in order to identify malignant transformations...
June 23, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28643039/primary-intraventricular-meningiomas-in-children-experience-of-two-cases-with-review-of-literature
#10
Kapil D Muley, Salman T Shaikh, Chandrashekhar E Deopujari, Uday B Andar
Meningiomas are rare in the pediatric age group, more so in the intraventricular location. They arise in the lateral ventricles from the arachnoid cells contained within the choroid plexus, in the third ventricle from the velum interpositum and in the fourth ventricle from the choroids. These tumors are usually large and have an aggressive behaviour. Surgical management of intra-ventricular meningiomas is challenging because of their deep location, large size at presentation and increased vascularity. The authors report two such cases who presented with symptoms of raised intra cranial pressure and on evaluation were found to have associated hydrocephalus...
June 22, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28642183/giant-bi-compartmental-cystic-tentorial-schwannoma-mimicking-a-meningioma
#11
Amandeep Kumar, Manmohan Singh, M C Sharma, P S Chandra, Bhawani S Sharma, Ashok K Mahapatra
BACKGROUND: Intracranial schwannomas most commonly arise from vestibulo-cochlear nerve and less frequently from trigeminal, facial and hypoglossal nerves. However, intracranial schwannomas unrelated to cranial nerves (ISUNs) are very rare and only ∼ 50 such cases have been reported in literature. Amongst these, tentorial schwannomas are even rarer and only 13 cases have been reported till date. We present one such rare case of giant tentorial schwannoma (TS). CASE DESCRIPTION: A 21 year old male patient presented to us with complaints of generalised headache and dizziness for past 6 months and worsening of symptoms for past 2 months...
June 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28640707/response-assessment-in-neuro-oncology-clinical-trials
#12
Patrick Y Wen, Susan M Chang, Martin J Van den Bent, Michael A Vogelbaum, David R Macdonald, Eudocia Q Lee
Development of novel therapies for CNS tumors requires reliable assessment of response and progression. This requirement has been particularly challenging in neuro-oncology for which contrast enhancement serves as an imperfect surrogate for tumor volume and is influenced by agents that affect vascular permeability, such as antiangiogenic therapies. In addition, most tumors have a nonenhancing component that can be difficult to accurately quantify. To improve the response assessment in neuro-oncology and to standardize the criteria that are used for different CNS tumors, the Response Assessment in Neuro-Oncology (RANO) working group was established...
June 22, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28640700/cns-tumors-in-neurofibromatosis
#13
Jian Campian, David H Gutmann
Neurofibromatosis (NF) encompasses a group of distinct genetic disorders in which affected children and adults are prone to the development of benign and malignant tumors of the nervous system. The purpose of this review is to discuss the spectrum of CNS tumors arising in individuals with NF type 1 (NF1) and NF type 2 (NF2), their pathogenic etiologies, and the rational treatment options for people with these neoplasms. This article is a review of preclinical and clinical data focused on the treatment of the most common CNS tumors encountered in children and adults with NF1 and NF2...
June 22, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28638017/-intraoperative-disinfection-sterilization-and-repeated-use-of-infected-titanium-implant-in-treatment-of-scalp-radial-ulcer-with-recurrent-meningioma
#14
V I Sharobaro, A G Gavrilov, N E Manturova
No abstract text is available yet for this article.
2017: Khirurgiia
https://www.readbyqxmd.com/read/28637207/the-use-of-semitranslucent-rubber-pledgets-during-microsurgical-dissection-of-cerebellopontine-angle-tumors-technical-note
#15
Marcus D Mazur, Richard Gurgel, Joel D MacDonald
BACKGROUND AND IMPORTANCE: Dissection of cerebellopontine angle (CPA) tumors that abut or adhere to the brainstem or cranial nerves can be a challenging surgical endeavor. We describe the use of semitranslucent latex rubber pledgets in the tumor-brain interface as a method to improve visualization and protection of vital tissue during microsurgical dissection of CPA masses. The rubber pledgets are fashioned by cutting circular discs out of the cuff portion of talc-free, partially opaque latex gloves...
June 20, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28631961/intracranial-dural-chondroma-in-a-child-conventional-and-advanced-neuroimaging-characteristics-and-differential-diagnosis
#16
Shai Shrot, Alan R Cohen, Fausto J Rodriguez, Frank Berkowitz, Bruno P Soares, Thierry Agm Huisman
Intracranial chondromas are rare tumors, especially in the pediatric population. We describe the conventional and advanced neuroimaging characteristics of this rare convexity dura-based chondroma in a young adolescent. In particular we demonstrate that diffusion-weighted imaging (DWI) facilitates differentiation between a dura-based chondroma and the more frequent classical meningioma. Chondromas are typically DWI hypointense with high apparent diffusion coefficient (ADC) values while meningiomas are typically DWI hyperintense with low ADC values...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28629376/radiation-therapy-for-older-patients-with-brain-tumors
#17
REVIEW
Giuseppe Minniti, Andrea Riccardo Filippi, Mattia Falchetto Osti, Umberto Ricardi
The incidence of brain tumors in the elderly population has increased over the last few decades. Current treatment includes surgery, radiotherapy and chemotherapy, but the optimal management of older patients with brain tumors remains a matter of debate, since aggressive radiation treatments in this population may be associated with high risks of neurological toxicity and deterioration of quality of life. For such patients, a careful clinical status assessment is mandatory both for clinical decision making and for designing randomized trials to adequately evaluate the optimal combination of radiotherapy and chemotherapy...
June 19, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28627983/susceptibility-weighted-imaging-a-problem-solving-tool-in-differentiation-of-cerebellopontine-angle-schwannomas-and-meningiomas
#18
Atul Mishra, Bejoy Thomas, T R Kapilamoorthy
Background and purpose Vestibular schwannomas and meningiomas of the cerebellopontine angle can be differentiated by the presence of foci of blooming on susceptibility weighted imaging. Materials and methods In this retrospective study, magnetic resonance imaging with susceptibility weighted imaging sequence in addition to other routine sequences was done in 73 patients. All the cases were studied for the presence of foci of blooming within the tumor on susceptibility weighted imaging. Histopathological examination confirmed the diagnosis in all cases...
June 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28625584/the-role-of-prophylactic-antiepileptic-drugs-for-seizure-prophylaxis-in-meningioma-surgery-a-systematic-review
#19
REVIEW
Abdurrahman I Islim, Stephen McKeever, Ter-Er Kusu-Orkar, Michael D Jenkinson
Meningiomas are the commonest type of primary brain tumours. Whilst most patients are seizure-free prior to surgery, antiepileptic drugs are frequently administered to reduce the risk of developing post-operative seizures. However, evidence to support their efficacy in providing this outcome is sparse. To this end, we performed a systematic review to assess the impact of prophylactic antiepileptic drugs on post-operative epilepsy rates in seizure-naïve patients undergoing craniotomy for resection of meningiomas...
June 15, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28625575/overexpression-of-stmn1-is-associated-with-the-prognosis-of-meningioma-patients
#20
Haifeng Wang, Wenchen Li, Guangming Wang, Shuyan Zhang, Li Bie
There is a small part of the pathological type of the meningioma has a malignant tendency and patients have the poor prognosis. Looking for effective biomarkers to predict the degree of malignancy of the tumors, will help us to better manage the patient and guide the treatment. The present study aims at investigating the prognostic value of the expression of Stathmin in a series of meningiomas of different grade. We integrated eight published microarray datasets of meningiomas to screen grade biomarkers in meningiomas patients using the WebArrayDB platform...
June 16, 2017: Neuroscience Letters
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