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Acoustic neuroma surgery

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https://www.readbyqxmd.com/read/30323683/occurrence-of-primary-brain-tumors-in-cochlear-implant-patients-in-sweden-between-1989-and-2014
#1
Henrik Smeds, Jeremy Wales, Tiit Mathiesen, Mats Talbäck, Maria Feychting
Purpose: Cochlear implants are widely used for hearing rehabilitation of deaf children with congenital deafness or adults with acquired severe-to-profound hearing loss. The sound processor antenna creates a radio frequency-electromagnetic field transmitting the sound signal to the implant, similar to that in a mobile phone. A recent case report suggested a relationship between cochlear implants and malignant glioma, and some epidemiological studies have suggested an increased glioma and acoustic neuroma risk associated with long hours of mobile phone use...
2018: Clinical Epidemiology
https://www.readbyqxmd.com/read/30249920/the-method-for-placement-of-an-intraoperative-continuous-facial-nerve-stimulating-electrode-in-acoustic-neuroma-surgery-technical-note
#2
Koichi Torihashi, Shigeo Sora, Hiroaki Sato, Michihiro Kohno
Preservation of facial nerve (FN) function is the most important goal in acoustic neuroma (AN) surgery. We have been using intraoperative continuous facial nerve monitoring (ICFNm) of evoked electromyography during AN surgery. ICFNm is very useful, and we can identify the real-time functions of the FN. Some surgeons have experienced difficulty with placing the ICFN stimulating electrode (SE). We therefore show how to place the ICFN SE. We mostly perform AN surgery with a retrosigmoid approach (RSA). A craniotomy with four burr holes is performed...
September 21, 2018: Neurologia Medico-chirurgica
https://www.readbyqxmd.com/read/30199503/factors-that-affect-length-of-hospital-stay-after-vestibular-schwannoma-surgery
#3
Nopawan Vorasubin, Thomas H Alexander, Bill Mastrodimos, Roberto A Cueva
OBJECTIVE: To identify perioperative factors that influence hospital length of stay (LOS) after resection of vestibular schwannoma (VS). STUDY DESIGN: Retrospective case review. SETTING: Tertiary skull base referral center. PATIENTS: Patients who underwent acoustic neuroma resection between January 1, 2007 and January 1, 2014. INTERVENTIONS: Approaches used for VS resection included translabyrinthine and retrosigmoid...
October 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/30197430/multi-option-therapy-vs-observation-for-small-acoustic-neuroma-hearing-focused-management
#4
E Zanoletti, D Cazzador, C Faccioli, S Gallo, L Denaro, D D'Avella, A Martini, A Mazzoni
The current treatment options for acoustic neuromas (AN) - observation, microsurgery and radiotherapy - should assure no additional morbidity on cranial nerves VII and VIII. Outcomes in terms of disease control and facial function are similar, while the main difference lies in hearing. From 2012 to 2016, 91 of 169 patients (54%) met inclusion criteria for the present study, being diagnosed with unilateral, sporadic, intrameatal or extrameatal AN up to 1 cm in the cerebello-pontine angle; the remaining 78 patients (46%) had larger AN and were all addressed to surgery...
August 2018: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/30121411/using-three-dimensional-printing-to-create-individualized-cranial-nerve-models-for-skull-base-tumor-surgery
#5
Jiye Lin, Zhenjun Zhou, Jianwei Guan, Yubo Zhu, Yang Liu, Zhilin Yang, Bomiao Lin, Yongyan Jiang, Xianyue Quan, Yiquan Ke, Tao Xu
OBJECTIVE: Using three-dimensional (3D) printing to create individualized patient models of the skull base, the optic chiasm and facial nerve can be previsualized to help identify and protect these structures during tumor removal surgery. METHODS: Preoperative imaging data for 2 cases of sellar tumor and 1 case of acoustic neuroma were obtained. Based on these data, the cranial nerves were visualized using 3D T1-weighted turbo field echo sequence and diffusion tensor imaging-based fiber tracking...
August 16, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/30106250/electrical-stimulation-based-nerve-location-prediction-for-cranial-nerve-vii-localization-in-acoustic-neuroma-surgery
#6
Dilok Puanhvuan, Sorayouth Chumnanvej, Yodchanan Wongsawat
INTRODUCTION: Cranial nerve (CN) VII localization is a critical step during acoustic neuroma surgery because the nerve is generally hidden due to the tumor mass. The patient can suffer from Bell's palsy if the nerve is accidentally damaged during tumor removal. Surgeons localize CN VII by exploring the target area with a stimulus probe. Compound muscle action potentials (CMAPs) are elicited when the probe locates the nerve. However, false positives and false negatives are possible due to unpredictable tissue impedance in the operative area...
June 2018: Brain and Behavior
https://www.readbyqxmd.com/read/30024419/pearls-for-the-middle-fossa-approach-in-acoustic-neuroma-surgery
#7
Kevin A Peng, Gregory P Lekovic, Eric P Wilkinson
PURPOSE OF REVIEW: To discuss the use of the middle fossa craniotomy for resection of vestibular schwannomas; to present pearls of and modifications to the approach. RECENT FINDINGS: The middle fossa craniotomy allows for hearing preservation in the resection of intracanalicular vestibular schwannomas. Over recent years, the approach has been modified to address larger tumors with a limited cerebellopontine angle component. Positive identification of the superior semicircular canal allows for rapid exposure of the internal auditory canal (IAC)...
October 2018: Current Opinion in Otolaryngology & Head and Neck Surgery
https://www.readbyqxmd.com/read/29904732/cochlea-sparing-acoustic-neuroma-treatment-with-4%C3%AF-radiation-therapy
#8
Kaley Woods, Percy Lee, Tania Kaprealian, Isaac Yang, Ke Sheng
Purpose: This study investigates whether 4π noncoplanar radiation therapy can spare the cochleae and consequently potentially improve hearing preservation in patients with acoustic neuroma who are treated with radiation therapy. Methods and materials: Clinical radiation therapy plans for 30 patients with acoustic neuroma were included (14 stereotactic radiation surgery [SRS], 6 stereotactic radiation therapy [SRT], and 10 intensity modulated radiation therapy [IMRT])...
April 2018: Advances in Radiation Oncology
https://www.readbyqxmd.com/read/29889791/quality-of-life-after-translabyrinthine-vestibular-schwannoma-resection-reliability-of-the-german-panqol-questionnaire
#9
Marcel Fabian Glaas, Ralf Schäfer, Philipp Jansen, Matthias Franz, Igor Stenin, Thomas Klenzner, Jörg Schipper, Katrin Eysel-Gosepath, Julia Kristin
OBJECTIVE: To quantify the postoperative quality of life (QOL) of patients after translabyrinthine surgery for vestibular schwannoma (VS) using the German version of the Penn acoustic neuroma quality-of-life questionnaire (PANQOL) in a university hospital. METHODS: The PANQOL questionnaire was administered to 72 patients who were treated in our department with translabyrinthine surgery for VS between January 2007 and January 2017. Descriptive evaluations of results were performed in addition to analyses of the reliability and convergent validity of the results and a subgroup analysis...
July 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29889284/increased-hospital-surgical-volume-reduces-rate-of-30-and-90-day-readmission-after-acoustic-neuroma-surgery
#10
Robin Babadjouni, Timothy Wen, Daniel A Donoho, Ian A Buchanan, Steven Y Cen, Rick A Friedman, Arun Amar, Jonathan J Russin, Steven L Giannotta, William J Mack, Frank J Attenello
BACKGROUND: Hospital readmissions are commonly linked to elevated health care costs, with significant financial incentive introduced by the Affordable Care Act to reduce readmissions. OBJECTIVE: To study the association between patient, hospital, and payer factors with national rate of readmission in acoustic neuroma surgery. METHODS: All adult inpatients undergoing surgery for acoustic neuroma in the newly introduced Nationwide Readmissions Database from 2013 to 2014 were included...
June 8, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29799334/stereotactic-body-radiation-therapy-for-benign-spine-tumors-is-dose-de-escalation-appropriate
#11
Ronny Kalash, Scott M Glaser, John C Flickinger, Steven Burton, Dwight E Heron, Peter C Gerszten, Johnathan A Engh, Nduka M Amankulor, John A Vargo
OBJECTIVE Akin to the nonoperative management of benign intracranial tumors, stereotactic body radiation therapy (SBRT) has emerged as a nonoperative treatment option for noninfiltrative primary spine tumors such as meningioma and schwannoma. The majority of initial series used higher doses of 16-24 Gy in 1-3 fractions. The authors hypothesized that lower doses (such as 12-13 Gy in 1 fraction) might provide an efficacy similar to that found with the dose de-escalation commonly used for intracranial radiosurgery to treat acoustic neuroma or meningioma and with a lower risk of toxicity...
August 2018: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29656878/postoperative-headache-following-treatment-of-vestibular-schwannoma-a-literature-review
#12
REVIEW
Ahad Sabab, Jaspreet Sandhu, Stephen Bacchi, Alistair Jukes, Andrew Zacest
Vestibular schwannoma (VS) is a brain tumour arising from Schwann cells that is typically closely associated with the vestibulocochlear nerve. Post-operative headaches (POH) are a potentially common complication of surgery for VS. Greatly differing rates of POH have previously been reported, particularly with different surgical approaches. The aim of this review is to identify and summarise the available peer-reviewed evidence on rates of POH following operative (or radiosurgery) treatment for VS, in addition to information about the treatment and prognosis of POH in these patients...
June 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29563978/the-medium-and-long-term-effect-of-electrophysiologic-monitoring-on-the-facial-nerve-function-in-minimally-invasive-surgery-treating-acoustic-neuroma
#13
Baohui Hou
The medium and long-term effects of electrophysiologic monitoring on the facial nerve function in minimally invasive surgery treating acoustic neuroma were studied. Sixty-two patients with acoustic neuroma taking minimally invasive surgeries in Dezhou Hospital from August 2014 to September 2015 were selected and randomly divided into 29 cases of the control group and 33 cases of the observation group. Intraoperative electrophysiologic monitoring was applied to the observation group, but not to the control group...
March 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29554375/quality-of-life-in-patients-with-vestibular-schwannomas-following-gross-total-or-less-than-gross-total-microsurgical-resection-should-we-be-taking-the-entire-tumor-out
#14
Michael J Link, Morten Lund-Johansen, Christine M Lohse, Colin L W Driscoll, Ehrling Myrseth, Oystein Vesterli Tveiten, Matthew L Carlson
BACKGROUND: The goal of microsurgical removal of a vestibular schwannoma is to completely remove the tumor, to provide long-term durable cure. In many cases, less than gross total resection (GTR) is performed to preserve neurological, and especially facial nerve function. OBJECTIVE: To analyze long-term quality of life (QoL) in a cohort of patients who received either GTR or less than GTR. METHODS: Patients operated for vestibular schwannoma less than 3...
April 1, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29543218/-surgery-treatment-of-purulent-corneal-ulcers-associated-with-neuroparalytic-keratitis
#15
Evg A Kasparova, O I Sobkova, E A Kasparova, A A Kasparov
OBJECTIVE: The study objective was to develop a method for surgical treatment of advanced purulent corneal ulcer in the setting of neuroparalytic keratitis developed after acoustic neuroma removal and strokes. MATERIAL AND METHODS: The study included 12 patients (13 eyes). All patients underwent single-step keratoplasty, conjunctival autografting, and partial permanent tarsorrhaphy. RESULTS: The eye as an organ was spared in 100% of cases; vision was spared in 50% of cases and improved, from 0...
2018: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/29493720/risk-of-posterior-semicircular-canal-trauma-when-using-a-retrosigmoid-approach-for-acoustic-neuroma-surgery-and-role-of-endoscopy-an-imaging-study
#16
Ali Kouhi, Varasteh Vakili Zarch, Ali Pouyan
The rate of hearing preservation after vestibular schwannoma surgery is variable and is not as high as expected, possibly due to injuries to the posterior semicircular canal while exposing the tumor. The aim of this study was to estimate the risk of posterior semicircular canal injuries using temporal bone computed tomography (CT) scan findings. Temporal bone CT scans of 30 patients selected between 2013 and 2015 were studied. The median age of the patients was 40 years. Two planes were studied: (1) the axial plane that shows the common crus of the posterior semicircular canal and (2) the coronal plane that shows the two crura of the posterior semicircular canal...
January 2018: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/29436268/patient-decision-making-in-vestibular-schwannoma-a-survey-of-the-acoustic-neuroma-association
#17
Omid Moshtaghi, Khodayar Goshtasbi, Ronald Sahyouni, Harrison W Lin, Hamid R Djalilian
Objective To assess the decision-making process of patients with vestibular schwannoma (VS). Study Design Patients with VS completed a voluntary survey over a 3-month period. Setting Surveys were distributed online through email, Facebook, and member website. Subjects and Methods All patients had a diagnosis of VS and were members of the Acoustic Neuroma Association (ANA). A total of 789 patients completed the online survey. Results Of the 789 participants, 474 (60%) cited physician recommendation as a significant influential factor in deciding treatment...
May 2018: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29420377/modified-lengthening-temporalis-myoplasty-involving-an-extended-lazy-s-incision-to-avoid-facial-scar-formation
#18
Tomito Oji, Akiteru Hayashi, Akihiro Ogino, Kiyoshi Onishi
BACKGROUND: Lengthening temporalis myoplasty is a faster and less invasive alternative to free muscle transfer for smile reconstruction. However, it requires a nasolabial fold incision, which leaves a midfacial scar. Based on esthetic considerations, a modified approach, involving an extended lazy-S (parotidectomy) incision instead of a nasolabial fold incision, was developed. METHODS: A cadaveric study involving 10 hemifaces was conducted. From February 2013 to March 2016, the modified lengthening temporalis myoplasty procedure was employed in 10 patients...
May 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29400585/fatal-collision-are-wireless-headsets-a-risk-in-treating-patients
#19
REVIEW
Cindy Sage, Lennart Hardell
Wireless-enabled headsets that connect to the internet can provide remote transcribing of patient examination notes. Audio and video can be captured and transmitted by wireless signals sent from the computer screen in the frame of the glasses. But using wireless glass-type devices can expose the user to a specific absorption rates (SAR) of 1.11-1.46 W/kg of radiofrequency radiation. That RF intensity is as high as or higher than RF emissions of some cell phones. Prolonged use of cell phones used ipsilaterally at the head has been associated with statistically significant increased risk of glioma and acoustic neuroma...
2018: Electromagnetic Biology and Medicine
https://www.readbyqxmd.com/read/29330600/the-impact-of-acoustic-neuroma-on-long-term-quality-of-life-outcomes-in-the-united-kingdom
#20
Wouter L Lodder, Bernard F A M van der Laan, Tristram H Lesser, Samuel C Leong
OBJECTIVE: To quantify the impact of acoustic neuroma on the quality-of-life (QOL) patients in the United Kingdom. STUDY DESIGN: Online questionnaire survey. PATIENTS: Members of the British Acoustic Neuroma Association received PANQOL questionnaires. RESULTS: Of the 880 BANA members contacted, 397 (45.1%) responded, although only 359 had complete datasets for analysis. Composite QOL scores were as follows: for microsurgery 58 (SD 35), for radiotherapy 56 (SD18), for combination of surgery and radiotherapy 49 (SD 14), and for the observation group 54 (SD 20)...
March 2018: European Archives of Oto-rhino-laryngology
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