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Acoustic neuroma

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https://www.readbyqxmd.com/read/29227438/transcanal-transpromontorial-acoustic-neuroma-surgery-results-and-facial-nerve-outcomes
#1
Daniele Marchioni, Davide Soloperto, Barbara Masotto, Cristoforo Fabbris, Stefano De Rossi, Domenico Villari, Livio Presutti
BACKGROUND: Recently, the transcanal approach for the removal of acoustic neuromas has been introduced. Facial nerve (FN) preservation is one of the main challenges of this kind of surgery. OBJECTIVE: To describe our experience in the surgical treatment of acoustic neuromas, focusing on the functional results of FN preservation after a transcanal approach. METHODS: A retrospective chart review was carried out on clinical data and videos from operations on 49 patients who underwent surgery with a totally transcanal exclusive endoscopic approach for Koos stage I-II lesions, or an enlarged transcanal transpromontorial approach for Koos stage II-III tumors, between March 2012 and February 2017...
December 7, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29208731/misleading-signs-in-acute-vertigo
#2
Sean Lance, Stuart Scott Mossman
The acute vestibular syndrome is common and usually has a benign cause. Sometimes, however, even experienced neurologists can find it difficult to determine the cause clinically. Furthermore, neuroimaging is known to be insensitive.We describe two cases of acute vestibular syndrome where conflicting clinical findings contributed to a delay in making the correct diagnosis. The first patient with symptomatic vertigo had signs consistent with horizontal benign paroxysmal positional vertigo but also had an abnormal horizontal head impulse test, superficially suggesting acute vestibular neuritis but later accounted for by the finding of a vestibular schwannoma (acoustic neuroma)...
December 5, 2017: Practical Neurology
https://www.readbyqxmd.com/read/29192065/peripheral-nerve-function-estimation-by-linear-model-of-multi-cmap-responses-for-surgical-intervention-in-acoustic-neuroma-surgery
#3
Dilok Puanhvuan, Sorayouth Chumnanvej, Yodchanan Wongsawat
Nerve function assessments are crucial for surgical intervention during acoustic neuroma surgery. Cranial nerves such as acoustic and facial nerves, can be possibly damaged during tumor dissection. Proper surgical intervention should prevent neurological deficit and achieve total tumor removal. Conventionally, nerve function is qualitatively evaluated by surgeon and neurologist. Facial nerves can be preserved by monitoring the compound muscle action potential (CMAP) response. The differences in the amplitude and latency of CMAP are used as indicators during surgical interventions...
December 2017: Physiological Reports
https://www.readbyqxmd.com/read/29184217/increased-sensibility-to-acute-acoustic-and-blast-trauma-among-patients-with-acoustic-neuroma
#4
Marzena Mielczarek, Jurek Olszewski
The article shows 2 cases of unusual presentation of acute acoustic trauma and blast injury due to occupational exposure. In the case of both patients the range of impaired frequencies in pure tone audiograms was atypical for this kind of causative factor. Both patients had symmetrical hearing before the accident (which was confirmed by provided results of hearing controls during their employment). A history of noise/blast exposure, the onset of symptoms directly after harmful exposure, symmetrical hearing before the trauma documented with audiograms, directed initial diagnosis towards acoustic/blast trauma, however, of atypical course...
November 27, 2017: International Journal of Occupational Medicine and Environmental Health
https://www.readbyqxmd.com/read/29134163/prognostic-indices-for-predicting-facial-nerve-outcome-following-the-resection-of-large-acoustic-neuromas
#5
Kurt Grahnke, Jonathan R Garst, Brendan Martin, John P Leonetti, Douglas E Anderson
This study analyzes the simple ratio of anterior-to-posterior extension of large (>2.5 cm) acoustic neuromas relative to the internal auditory canal (ICA; anterior-posterior [A/P] index) as a tool for predicting risk of facial nerve (FN) injury. In total, 105 patients who underwent microsurgical resection for large acoustic neuromas were analyzed retrospectively. House-Brackmann (HB) scores were assessed immediately postoperatively, at 1 month, and at 1 year. Lateral-medial, inferior-superior, A/P, and maximum diameters were measured from preoperative magnetic resonance images...
December 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29099300/diagnostic-value-of-preoperative-inflammatory-markers-in-patients-with-glioma-a-multicenter-cohort-study
#6
Shi-Hao Zheng, Jin-Lan Huang, Ming Chen, Bing-Long Wang, Qi-Shui Ou, Sheng-Yue Huang
OBJECTIVE Glioma is the most common form of brain tumor and has high lethality. The authors of this study aimed to elucidate the efficiency of preoperative inflammatory markers, including neutrophil/lymphocyte ratio (NLR), derived NLR (dNLR), platelet/lymphocyte ratio (PLR), lymphocyte/monocyte ratio (LMR), and prognostic nutritional index (PNI), and their paired combinations as tools for the preoperative diagnosis of glioma, with particular interest in its most aggressive form, glioblastoma (GBM). METHODS The medical records of patients newly diagnosed with glioma, acoustic neuroma, meningioma, or nonlesional epilepsy at 3 hospitals between January 2011 and February 2016 were collected and retrospectively analyzed...
November 3, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29050101/-factors-of-hearing-preservation-in-acoustic-neuroma-surgery
#7
H Y Tan, Z Y Wang, H Wu
Over the past 50 years, the focus of acoustic neuroma surgery has shifted from low mortality and tumor resection to retention of neurological function. Hearing preservation is another point in addition to facial nerve function preservation. Hearing preservation rates overall ranged from 2% to 93% in recent studies. Characteristics such as approach, pre-operative neurological function, tumor size, nerve of origin and fundal fluid of the internal auditory canal have been reported as possible influencing factors...
October 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/29035995/internal-auditory-canal-tumor-as-an-incidental-finding-on-a-choline-pet-ct-scan-in-a-prostate-cancer-patient
#8
Julia Malamitsi, Roxanni Efthymiadou, Theodore Pipikos, Fani Vlachou, Vassilis Prassopoulos
An 84-year-old man with a history of prostate cancer, treated with radiotherapy, presented with an increase in PSA levels. F-choline PET/CT showed foci of increased choline uptake in L4 and L5 vertebrae, suggestive of bone metastases and another focus in the right cerebellopontine angle. A brain MRI revealed a focus of intense contrast enhancement in the same region, consistent with an acoustic neuroma.
October 13, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29021412/postoperative-headache-after-undergoing-acoustic-neuroma-surgery-via-the-retrosigmoid-approach
#9
Noritaka Aihara, Hiroshi Yamada, Mariko Takahashi, Akira Inagaki, Shingo Murakami, Mitsuhito Mase
To estimate the duration of postoperative headache after surgery for acoustic neuroma and the effects of age, sex, tumor size, extent of tumor resection, type of skin incision, surgical duration, hearing preservation, and postoperative facial nerve palsy. This retrospective review analyzed clinical data from 97 patients who had undergone surgery for unilateral acoustic neuroma via the retrosigmoid approach >1 year previously. We investigated whether patients had headache at hospital discharge and during attendance at outpatient clinics...
October 12, 2017: Neurologia Medico-chirurgica
https://www.readbyqxmd.com/read/28973498/failure-to-rescue-and-mortality-following-resection-of-intracranial-neoplasms
#10
Hani Malone, Michael Cloney, Jingyan Yang, Dawn L Hershman, Jason D Wright, Alfred I Neugut, Jeffrey N Bruce
BACKGROUND: There is growing recognition that perioperative complication rates are similar between hospitals, but mortality rates are lower at high-volume centers. This may be due to differences in the ability to rescue patients from major complications. OBJECTIVE: To examine the relationship between hospital caseload and failure to rescue from complications following resection of intracranial neoplasms. METHODS: We identified adults in the Nationwide Inpatient Sample diagnosed with glioma, meningioma, brain metastasis, or acoustic neuroma, who underwent surgical resection between 1998 and 2010...
August 1, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28885483/assessing-readability-and-reliability-of-online-patient-information-regarding-vestibular-schwannoma
#11
Harry Spiers, Nikul Amin, Raj Lakhani, Andrew J Martin, Parag M Patel
HYPOTHESIS: The aim of this study is to objectively assess the quality and readability of websites related to vestibular schwannomas. BACKGROUND: Patients are increasingly seeking information on confirmed or suspected diagnoses through the Internet. Clinicians are often concerned regarding the accuracy, quality, and readability of web-based sites. METHODS: Online information relating to vestibular schwannoma was searched using the three most popular search engines...
December 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28872162/conservative-treatment-of-vestibular-schwannoma-growth-and-penn-acoustic-neuroma-quality-of-life-scale-in-french-language
#12
P A Oddon, M Montava, F Salburgo, M Collin, C Vercasson, J P Lavieille
The aim of this study was to determine the natural history of growth and quality of life (QoL) outcomes for vestibular schwannoma (VS) managed conservatively, and to validate the disease-specific Penn Acoustic Neuroma Quality-of-Life (PANQOL) scale in French language. We retrospectively studied 26 patients with VS managed conservatively. Patient characteristics and radiological findings were collected. Two scales were used to measure QoL: the Short Form-36 Health Survey (SF-36) and the PANQOL scale translated into French...
August 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28861705/multistep-translation-and-cultural-adaptation-of-the-penn-acoustic-neuroma-quality-of-life-scale-for-german-speaking-patients
#13
Julia Kristin, Marcel Fabian Glaas, Igor Stenin, Angelika Albrecht, Thomas Klenzner, Jörg Schipper, Katrin Eysel-Gosepath
BACKGROUND: Monitoring the health-related quality of life (HRQOL) for patients with vestibular schwannoma (VS) has garnered increasing interest. In German-speaking countries, there is no disease-specific questionnaire available similar to the "Penn Acoustic Neuroma Quality-of-life Scale" (PANQOL). METHOD: We translated the PANQOL for German-speaking patients based on a multistep protocol that included not only a forward-backward translation but also linguistic and sociocultural adaptations...
November 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28820301/translabyrinthine-microsurgical-resection-of-small-vestibular-schwannomas
#14
Marc S Schwartz, Gregory P Lekovic, Mia E Miller, William H Slattery, Eric P Wilkinson
OBJECTIVE Translabyrinthine resection is one of a number of treatment options available to patients with vestibular schwannomas. Though this procedure is hearing destructive, the authors have noted excellent clinical outcomes for patients with small tumors. The authors review their experience at a tertiary acoustic neuroma referral center in using the translabyrinthine approach to resect small vestibular schwannomas. All operations were performed by a surgical team consisting of a single neurosurgeon and 1 of 7 neurotologists...
August 18, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28816690/complications-of-the-middle-cranial-fossa-approach-for-acoustic-neuroma-removal
#15
Matthias Scheich, Christian Ginzkey, Desiree Ehrmann Müller, Wafaa Shehata Dieler, Rudolf Hagen
OBJECTIVE: To analyze postoperative complications after microsurgery for acoustic neuroma (AN) via the middle fossa approach (MFA). MATERIALS AND METHODS: In total, 203 consecutive patients of a tertiary skull base referral center at a university hospital were included in this retrospective chart and database analysis. All patients had undergone primary microsurgery at the Otorhinolaryngology department via MFA between December 2005 and October 2014. Postoperative complications were documented during the inpatient stay and outpatient follow-up...
August 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/28810890/outcome-of-hearing-preservation-related-to-tumor-morphologic-analysis-in-acoustic-neuromas-treated-by-gamma-knife-radiosurgery
#16
Szu-Yen Pan, Shih-An Liu, Ming-Hsi Sun, Hsi-Kai Tsou, Shinh-Dung Lee, Yen-Ju Chen, Jason Sheehan, Meei-Ling Sheu, Hung-Chuan Pan
BACKGROUND: Gamma Knife radiosurgery (GKRS) is an important part of the neurosurgical armamentarium in the treatment of acoustic neuromas. However, the treatment outcome related to the morphology of the tumor has not been rigorously studied. In this cohort, we evaluated the morphological features of the tumor in the tumor response and neurological outcomes after GKRS. MATERIAL AND METHODS: From July 2003 to December 2008, there were 93 cases of acoustic neuromas treated upfront with GKRS with 64 cases with serviceable hearing and 29 cases without serviceable hearing to fulfill the margin dose of 12Gy with at least follow up 5 years...
August 15, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28761510/a-systematic-review-about-the-position-related-complications-of-acoustic-neuroma-surgery-via-suboccipital-retrosigmoid-approach-sitting-versus-lateral
#17
REVIEW
Mahdi Safdarian, Manouchehr Safdarian, Roger Chou, Seyed Mahmoud Ramak Hashemi, Vafa Rahimi-Movaghar
This systematic review wasdesigned to compare the complications of acoustic neuroma surgery via the suboccipital retrosigmoid approach in the sitting versus lateral positions. Searches for randomized trials and observational studies about the complications of acoustic neuroma surgery were performed in five medical databases (though October 2015) including PubMed, MEDLINE (In-Process and Other Non-Indexed Citations), EMBASE, Cochrane Central Register of Controlled Trials (CENTRAL) and PsycINFO. Primary outcomes in this study were venous air emboli, neuropsychological defects, CSF leak, facial and abducens nerves palsy, postoperative deafness, hydrocephalus and mortality...
July 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28740448/evaluation-of-brain-edema-formation-defined-by-mri-after-linac-based-stereotactic-radiosurgery
#18
Maciej Harat, Andrzej Lebioda, Judyta Lasota, Roman Makarewicz
BACKGROUND: Peri-lesional edema is a serious and well-known complication of stereotactic radiosurgery (SRS). Here we evaluated edema risk after SRS and assessed its formation and resolution dynamics. PATIENTS AND METHODS: 107 patients underwent SRS for heterogeneous diagnoses: 34 (29%) with arteriovenous malformations, 38 (35%) with meningiomas, 16 (15%) with metastatic tumors, 16 (15%) with acoustic neuromas, 3 with (3%) cavernomas, and 2 (2%) each with anaplastic astrocytomas and anaplastic oligoastrocytomas...
June 2017: Radiology and Oncology
https://www.readbyqxmd.com/read/28725516/how-i-do-it-the-role-of-flexible-hand-held-2%C3%AE-thulium-laser-fiber-in-microsurgical-removal-of-acoustic-neuromas
#19
Luciano Mastronardi, Guglielmo Cacciotti, Raffaele Roperto, Maria Pia Tonelli, Ettore Carpineta
Aims  We performed a retrospective nonrandomized study to analyze the results of microsurgery of acoustic neuromas (AN) using 2μ-thulium flexible hand-held laser fiber (Revolix jr). Methods  From September 2010 to September 2015, 89 patients suffering from AN have been operated on with microsurgical technique via retrosigmoid approach. In 37 cases, tumor resection was performed with the assistance of 2μ-thulium flexible hand-held laser fiber (L-group). Eight cases operated on with the assistance of CO 2 hand-held flexible laser fiber were excluded from this study...
August 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28722648/perspectives-on-the-pure-tone-audiogram
#20
REVIEW
Frank E Musiek, Jennifer Shinn, Gail D Chermak, Doris-Eva Bamiou
BACKGROUND: The pure-tone audiogram, though fundamental to audiology, presents limitations, especially in the case of central auditory involvement. Advances in auditory neuroscience underscore the considerably larger role of the central auditory nervous system (CANS) in hearing and related disorders. Given the availability of behavioral audiological tests and electrophysiological procedures that can provide better insights as to the function of the various components of the auditory system, this perspective piece reviews the limitations of the pure-tone audiogram and notes some of the advantages of other tests and procedures used in tandem with the pure-tone threshold measurement...
July 2017: Journal of the American Academy of Audiology
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