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REVIEW
Lucca B Palavani, Sávio Batista, Filipi Fim Andreão, Leonardo de Barros Oliveira, Guilherme Melo Silva, Stefan Koester, João F Barbieri, Raphael Bertani, Vinicius Trindade Gomes da Silva, Marcus Acioly, Wellingson S Paiva, Erion J De Andrade, Marcio S Rassi
BACKGROUND: Vestibular schwannomas (VS) are benign tumors arising from vestibular nerve's Schwann cells. Surgical resection via retrosigmoid (RS) or middle fossa (MF) is standard, but the optimal approach remains debated. This meta-analysis evaluated RS and MF approaches for VS management, emphasizing hearing preservation and Cranial nerve seven (CN VII) outcomes stratified by tumor size. METHODS: Systematic searches across PubMed, Cochrane, Web of Science, and Embase identified relevant studies...
April 13, 2024: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
#2
JOURNAL ARTICLE
Mirza Pojskić, Domagoj Gajski, Alisa Arnautović, Kenan I Arnautović
OBJECTIVE: Anticoagulant therapy is a risk factor for repeated intratumoral hemorrhage and acute enlargement of a vestibular schwannoma (VS) with neurological deficits. Therefore, we describe two cases of patients on oral anticoagulant therapy with intratumoral hemorrhage in which anticoagulant therapy prior to surgical resection was discontinued. We also discuss other similar cases from the literature since this is a rare event. CASE REPORTS: We described the two cases of intratumoral hemorrhage in acoustic neurinoma and conducted a literature review of similar cases of patients with intratumoral hemorrhage in acoustic neurinoma who were also on oral anticoagulants...
December 29, 2023: Acta Medica Academica
#3
Luis Lassaletta, Leticia Acle Cervera, Xabier Altuna, Emilio Amilibia Cabeza, Miguel Arístegui Ruiz, Ángel Batuecas Caletrio, Jesús Benítez Del Rosario, Rubén Cabanillas Farpón, María Costales Marcos, Pedro Escada, Juan Manuel Espinosa-Sánchez, Roberto García Leal, Javier Gavilán, Justo Gómez Martínez, Rocío González-Aguado, Victor Martinez-Glez, Gloria Guerra Jiménez, Alejandro Harguindey Antolí-Candela, Borja J Hernández García, Cesar Orús Dotú, Rubén Polo López, Manuel Manrique, Eduardo Martín Sanz, Roberto Martínez Álvarez, Henry Martínez, Marta Martínez-Martínez, Jorge Rey-Martinez, Francisco Ropero Romero, Santiago Santa Cruz Ruiz, Luis Ángel Vallejo, Andrés Soto Varela, Isabel Varela-Nieto, José Manuel Morales Puebla
INTRODUCTION: Vestibular schwannoma (VS) is the most common tumour of the cerebellopontine angle. The greater accessibility to radiological tests has increased its diagnosis. Taking into account the characteristics of the tumour, the symptoms and the age of the patient, three therapeutic strategies have been proposed: observation, surgery or radiotherapy. Choosing the most appropriate for each patient is a frequent source of controversy MATERIAL AND METHODS: This paper includes an exhaustive literature review of issues related to VS that can serve as a clinical guide in the management of patients with these lesions...
February 10, 2024: Acta otorrinolaringologica española
#4
JOURNAL ARTICLE
Małgorzata Litwiniuk-Kosmala, Maria Makuszewska, Kazimierz Niemczyk, Robert Bartoszewicz, Bartosz Wojtas, Bartłomiej Gielniewski
PURPOSE: To assess the differences in the miRNA expression profile between small (stage I Koos classification) and large solid vestibular schwannoma (VS) tumors, using the RNA-seq technique. METHODS: Twenty tumor samples (10 small and 10 large tumors) were collected from patients operated for VS in a Tertiary Academic Center. Tumor miRNA expression was analyzed using high-throughput RNA sequencing (RNA-seq) technique, with NovaSeq 6000 Illumina system. Bioinformatics analysis was done using statistical software R...
February 8, 2024: Acta Neurochirurgica
#5
REVIEW
K Sridhar, K Santosh Mohan Rao
Prof B Ramamurthi was a pioneer of Indian neurosurgery and a major force in the development of Indian neuroscience. Founding the Madras Institute of Neurology and later the A Lakshmipathi Neurosurgical Centre (ALNC), both at Madras (or Chennai as it is now called), he developed centres of excellence in his career that spanned over five decades. During this period of time he made Madras, a destination for neurosurgery and neuroscience. Along with his colleagues a large number of publications were produced which influenced the world...
March 2022: Neurology India
#6
Takahiro Kanaya, Yasuo Murai, Kanako Yui, Shun Sato, Akio Morita
Lipomas of the cerebellopontine angle (CPA) and internal auditory canal (IAC) are relatively rare tumors. Acoustic neurinoma is the most common tumor in this location, which often causes hearing loss, vertigo, and tinnitus. Occasionally, this tumor compresses the brainstem, prompting surgical resection. Lipomas in this area may cause symptoms similar to neurinoma. However, they are not considered for surgical treatment because their removal may result in several additional deficits. Conservative therapy and repeated magnetic resonance imaging examinations for CPA/IAC lipomas are standard measures for preserving cranial nerve function...
January 5, 2022: Diagnostics
#7
JOURNAL ARTICLE
Stephanie Schipmann, Sebastian Lohmann, Bilal Al Barim, Eric Suero Molina, Michael Schwake, Özer Altan Toksöz, Walter Stummer
BACKGROUND: Due to rising costs in health care delivery, reimbursement decisions have progressively been based on quality measures. Such quality indicators have been developed for neurosurgical procedures, collectively. We aimed to evaluate their applicability in patients that underwent surgery for vestibular schwannoma and to identify potential new disease-specific quality indicators. METHODS: One hundred and three patients operated due to vestibular schwannoma were subject to analysis...
February 2022: Acta Neurochirurgica
#8
Serbeze Kabashi, Mehmet Sahin Ugurel, Kreshnike Dedushi, Sefedin Mucaj
BACKGROUND: Acoustic neuromas are also called vestibular schwannoma, acoustic neurinoma, vestibular neuroma, and acoustic neurofibroma. These are tumors that evolve from Schwann cell sheath and can be either intracranial or extra-axial. They usually occur adjacent to the cochlear or vestibular nerve. Anatomically, acoustic neuromas tend to occupy the cerebellopontine angle. About 20% of internal carotid artery (ICA) tumors are meningiomas and may occur elsewhere in the brain. Bilateral acoustic neuromas also tend to be exclusively in individuals with type 2 neurofibromatosis...
December 2020: Acta Informatica Medica: AIM
#9
JOURNAL ARTICLE
Morten Klitskov Jensen, Dan Dupont Hougaard
PURPOSE: Suppression head impulse testing (SHIMP) is a new vestibular method capable of quantifying vestibular function. The aim of this study was to evaluate the feasibility of this test in patients with existing or newly diagnosed vestibular schwannoma (VS) patients by comparing the results with the traditionally used video head impulse test (vHIT or HIMP). METHODS: Fifty-five patients with unilateral VS underwent a wide battery of audiological and vestibular tests...
January 27, 2021: European Archives of Oto-rhino-laryngology
#10
JOURNAL ARTICLE
Runfeng Wang, Zhiguo Zhang, Zhihong Li, Yan Qu
BACKGROUND: When utilizing the retrosigmoid approach (RA), accurately identifying the transverse and sigmoid sinus transition (TSST) is a key procedure for neurosurgeons, especially in developing countries restricted by the lack of expensive devices, such as the neural navigation system and the three-dimensional volumetric image-rendered system. Before operations, a computed tomography scan is a common and cost-effective method of checking patients who suffer lesions located at the cerebellopontine angle...
2020: Chinese Neurosurgical Journal
#11
JOURNAL ARTICLE
M Sambasivan, K V Mathai, J Chandy
No abstract text is available yet for this article.
March 2020: Neurology India
#12
JOURNAL ARTICLE
Diego A Hernández, Juan M Zaloff Dakoff, Cynthia Auad, Víctor E Derechinsky, Roberto Rosler, Sebastián Piccirilo, Ana M Matínez, María Luisa Filomía, Luisa Rafailovici
Stereotactic radiosurgery has shown effectiveness in the multimodal treatment of skull base tumors, however it is suggested that in radiobiologically sensitive areas (eg. optic nerves and brainstem) the radiation dose should be reduced due to radiotoxic effects. To avoid the consequent therapeutic ineffectiveness, a recently implemented alternative is multisession radiosurgery (RCH). We retrospectively analyzed a series of patients with skull base tumors, in order to evaluate the treatment with RCH through tumor control in the post-treatment images...
2019: Medicina
#13
Stefano Tambuzzi, Michele Boracchi, Francesca Maciocco, Cristina Tonello, Guendalina Gentile, Riccardo Zoja
In this case-report, the Authors show the case of a sudden death occurred in a 38-year-old woman submitted to surgical excision of a right acoustic neurinoma. At the autopsy, was detected a cerebral hemorrhage with multifocal localization by a ruptured rare fungal aneurysm of the Posterior Inferior Cerebellar Arthery (PICA). The PCR analysis, carried out on formalin-fixed paraffin-embedded tissue, identified the Aspergillus Penicillioides as the involved pathogen. We discuss the main points of infectious aneurysms, being a potential neurosurgical complication...
December 2019: Medical Mycology Case Reports
#14
REVIEW
A Vienne-Jumeau, C Tafani, D Ricard
Adult primary tumors of the central nervous system are rare, but the incidence is increased in some European countries. Several environmental exposures have been investigated as potential risk factors, but for most, scientific evidence is still lacking. Here we review studies of environmental factors potentially involved in the carcinogenesis of brain tumors: the potential association between primary central nervous system tumors and ionizing radiation, some toxic agents (N-nitroso compounds, pesticides), air pollution, and radiofrequency electromagnetic waves...
September 13, 2019: Revue Neurologique
#15
JOURNAL ARTICLE
Tomoyuki Ota, Hiroshi Matsumoto, Kiyoshi Yamada, Yoshihiro Kimata
BACKGROUND: In surgical treatment for longstanding facial paralysis, muscle transplantation is considered a useful and important method. To obtain a spontaneous smile, the use of the facial nerve of the healthy side as a motor source is better, but use of the masseter nerve allows prompt reinnervation and powerful movement. However, in some patients in whom the masseter nerve is used, separating masticatory movement and commissure contraction is difficult. Solutions for such patients have not been determined...
January 2019: Journal of Craniofacial Surgery
#16
JOURNAL ARTICLE
Daniel Rueß, Lea Pöhlmann, Stefan Grau, Christina Hamisch, Alexandra Hellerbach, Harald Treuer, Martin Kocher, Maximilian I Ruge
BACKGROUND: The management of solely intracanalicular acoustic neurinoma (iAN) includes observation, microsurgical resection and radiation therapy. Treatment goals are long-term tumor control, hearing preservation and concurrently low side-effects. Stereotactic radiosurgery (SRS) has evolved as an alternative first-line treatment for small AN. Here we report about the long-term follow-up of a unique cohort of patients with iAN after LINAC or Cyberknife® based SRS. METHODS: In this single center retrospective analysis, we included all patients with iAN who underwent single session LINAC or Cyberknife® based SRS between 1993 and 2015, and who had a minimum follow-up period of six weeks...
April 21, 2017: Radiation Oncology
#17
Khandkar Ali Kawsar, Md Raziul Haque, Forhad Hossain Chowdhury
Neurofibromatosis-2 (NF2) is an autosomal-dominant disease, which is characterized by vestibular schwannomas (VSs) (acoustic neurinoma) as well as tumours of the peripheral and central nervous system, demonstrating a variety of expression. A 12-year-old girl presented to us with headache and ataxia for four months. We examined and found a lump in the right side of her abdomen. On magnetic resonance imaging (MRI) of brain, a bilateral VS at the cerebellopontine (CP) angle was detected, and on computerized tomography (CT) scan and ultrasonography of her abdomen a large retroperitoneal schwannoma was revealed in the right side of her abdomen...
January 2017: Asian Journal of Neurosurgery
#18
JOURNAL ARTICLE
WenMing Hong, HongWei Cheng, XiaoJie Wang, ChunGuo Feng
OBJECTIVE: To explore and analyze the influencing factors of facial nerve function retainment after microsurgery resection of acoustic neurinoma. METHODS: Retrospective analysis of our hospital 105 acoustic neuroma cases from October, 2006 to January 2012, in the group all patients were treated with suboccipital sigmoid sinus approach to acoustic neuroma microsurgery resection. We adopted researching individual patient data, outpatient review and telephone followed up and the House-Brackmann grading system to evaluate and analyze the facial nerve function...
March 2017: Journal of Korean Neurosurgical Society
#19
JOURNAL ARTICLE
Genshu Tate, Koji Kishimoto, Toshiyuki Mitsuya
Meningiomas may be classified as neurofibromin 2 (NF2)-associated and non-NF2 meningiomas depending on the presence or absence of molecular alterations in the NF2 gene. One of the characteristic histological features of meningiomas is the whorl formation of neoplastic arachnoid cells. NF2 is a human homolog of the Drosophila gene, Merlin ( Mer ). In humans, NF2 is the gene responsible for the disease neurofibromatosis type II, which results in the development of brain tumors, including acoustic neurinoma and meningioma...
November 2016: Oncology Letters
#20
JOURNAL ARTICLE
V N Shimanskiy, V K Poshataev, D A Odamanov, K V Shevchenko
INTRODUCTION: Liquorrhea is a condition characterized by cerebrospinal fluid (CSF) leakage from the cranial cavity due to injury to the integrity of the dura mater (DM) and bone structures of the skull base. Surgery for posterior cranial fossa (PCF) lesions distinguishes wound CSF leakage when CSF leaks from a surgical wound as well as basal CSF leakage (nasal liquorrhea and, less often, otoliquorrhea). The main cause of basal CSF leakage is injury (including surgical injury) resulting in a defect in the DM and bone structures (cells of the mastoid process in the case of a suboccipital retrosigmoid approach)...
2016: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
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