The Method for Placement of an Intraoperative Continuous Facial Nerve Stimulating Electrode in Acoustic Neuroma Surgery: Technical Note.


: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. We dissect the arachnoid membrane along the accessory nerve from the cisterna magna to the glossopharyngeal nerve. When we are able to identify the root exit zone (REZ) of the FN near the brainstem, we place the ICFN SE on it. However, when a large tumor covers the REZ, we have to debulk the tumor to create a space between the tumor and the glossopharyngeal nerve. After that, we can place the SE on the REZ. A method for placement of the ICFN SE is needed for some techniques of AN surgery. Once we learn how to place the SE, we can identify continuous FN function during AN surgery. This method is useful for the preservation of postoperative FN function in AN surgery.


Torihashi K,Sora S,Sato H,Kohno M




Has Abstract


2018-11-15 00:00:00












  • Coagulopathy in chronic subdural hematoma.

    abstract::Coagulation factors were studied in 30 fluids aspirated from 25 patients with chronic subdural hematoma. Compared with the normal range for plasma, the hematoma fluids demonstrated a marked reduction in factors II, V, VII, VIII, and X, moderate reduction of factors IX and XI, and slight reduction of XII. Factor VII an...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


    authors: Kawakami Y,Tanimoto T,Shimamura Y

    更新日期:1991-01-01 00:00:00

  • [Pituitary hemorrhage extending into the third ventricle. Case report].

    abstract::A case of pituitary apoplexy causing pituitary hemorrhage with extension into the third ventricle is reported. The patient was a 73-year-old, obese female admitted with sudden onset of vomiting and impaired consciousness. Neurological examination revealed that she was stuporous, with marked neck stiffness and a dilate...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


    authors: Takasugi N,Doi A

    更新日期:1989-10-01 00:00:00

  • Bypass surgery for occluded internal carotid artery revascularized by vasa vasorum--case report.

    abstract::A 47-year-old woman presented with two transient ischemic attacks due to occlusion of the left internal carotid artery. The affected artery was revascularized by vasa vasorum. Angiography showed occlusion of the left common carotid artery including the origin of the internal carotid artery. The distal internal carotid...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


    authors: Shimizu H,Tominaga T,Ezura M,Yoshimoto T

    更新日期:2002-02-01 00:00:00

  • The Effect of Irrigation Solutions on Recurrence of Chronic Subdural Hematoma: A Consecutive Cohort Study of 234 Patients.

    abstract::Chronic subdural hematomas (CSDHs) occur often in elderly persons and can occur with mild head trauma. With burr-hole irrigation as standard treatment, symptoms usually improve and can be cured, and outcomes are good, but postoperative recurrences are a common problem. This study investigated the effectiveness and rec...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


    authors: Kuwabara M,Sadatomo T,Yuki K,Migita K,Imada Y,Shimizu K,Hara T,Oba H,Kurisu K

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  • Spinal cord edema preceding syringomyelia associated with Chiari I malformation--case report.

    abstract::A 38-year-old woman with Chiari I malformation presented with spinal cord edema preceding syringomyelia manifesting as a 5-month history of nuchal pain and numbness of the upper extremities. Magnetic resonance imaging showed spinal cord edema, a poorly defined syrinx at the C-2 to T-2 levels, and distorted cerebellar ...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


    authors: Itoh Y,Kuwahara N,Sasajima T,Mizoi K,Hatazawa J

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  • Rapid resolution of acute subdural hematoma--report of four cases.

    abstract::We report four cases of acute subdural hematoma (ASDH) in which the hematoma rapidly resolved. Three of the four hematomas were traumatic. The outcome was good in three cases and fair in one. Spontaneous resolution of ASDH is rare. ...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


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  • Spinal subdural hematoma following intracranial aneurysm surgery: four case reports.

    abstract::Four patients presented with rare spinal subdural hematoma (SDH) occurring after intracranial aneurysm surgery and manifesting as postoperative back pain. Magnetic resonance imaging performed from 4 to 11 days after the operation showed acute or subacute thoracolumbar SDH. No patient had risk factors for bleeding at t...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


    authors: Kim MS,Lee CH,Lee SJ,Rhee JJ

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  • Dural-pial arteriovenous malformation with unusual venous drainage.

    abstract::A 41-year-old female presented with an uncommon mixed dural-pial arteriovenous malformation (AVM) with unusual venous drainage. Angiography at the initial operation for massive intracerebral hematoma in the parietal lobe showed no vascular malformations. Follow-up angiography 3 years later revealed a mixed dural-pial ...

    journal_title:Neurologia medico-chirurgica

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  • Minimally Invasive Surgical Approach to Filum Lipoma.

    abstract::Filum terminale lipoma (FTL) causes various spinal symptoms known as tethered cord syndrome. The treatment for FTL is surgical untethering by sectioning the FTL, which can prevent symptom progression and often results in improvement of symptoms. This report describes a minimally invasive surgical strategy that we have...

    journal_title:Neurologia medico-chirurgica

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    authors: Hayashi T,Kimiwada T,Kohama M,Shirane R,Tominaga T

    更新日期:2018-03-15 00:00:00

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    abstract::The effectiveness of spinal surgery for lumbar canal stenosis was investigated in the elderly. 164 patients with lumbar canal stenosis were surgically treated over 8 years. 125 patients were followed up by letter questionnaire. The outcome and patient satisfaction with the surgical procedures were compared between the...

    journal_title:Neurologia medico-chirurgica

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    authors: Hanakita J,Suwa H,Mizuno M

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    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


    authors: Takada K,Maki Y,Kinosada M,Ishibashi R,Chin M,Yamagata S

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  • Reappearance of Cranial Nerve Dysfunction Symptoms Caused by New Artery Compression More than 20 Years after Initially Successful Microvascular Decompression: Report of Two Cases.

    abstract::Reappearance of symptoms of cranial nerve dysfunction is not uncommon after successful microvascular decompression (MVD). The purpose of this study was to report two quite unusual cases of recurrent and newly developed hemifacial spasm (HFS) caused by a new conflicting artery more than 20 years after the first success...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


    authors: Inoue H,Kondo A,Shimano H,Yasuda S,Murao K

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  • Quantitative kinetic analysis of blood vessels in the outer membranes of chronic subdural hematomas.

    abstract::Dynamic biologic modeling was used to calculate the transfer rate constant for gadolinium-diethylenetriaminepenta-acetic acid (Gd-DTPA) and capillary permeability in the outer membrane of chronic subdural hematomas and effusions. Following intravenous Gd-DTPA injection, Gd concentrations in the subdural fluid and in t...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


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    abstract::The morphological changes in the vascular endothelium caused by the administration of tumor necrosis factor-alpha (TNF-alpha) were studied in an experimental model of rat brain tumors. Wistar rats bearing implanted C6 glioma received human natural-type TNF-alpha (1.7 x 10(5) U/m2) through the carotid artery and were s...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


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  • Case volume does not correlate with outcome after cerebral aneurysm clipping: a nationwide study in Japan.

    abstract::The present study analyzed the impact of case volume on outcome after cerebral aneurysm clipping at all 382 core neurosurgical training centers certified by the Japan Neurosurgical Society. A survey requested information on all clipping surgeries for cerebral aneurysms performed during 2003. Among these centers, 369 (...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


    authors: Hattori N,Katayama Y,Abe T,Japan Neurosurgical Society.

    更新日期:2007-03-01 00:00:00

  • Hearing restoration from deafness after resection of a large cerebellopontine angle meningioma--case report.

    abstract::A 61-year-old man presented with a large cerebellopontine angle meningioma manifesting as a 1-year history of deafness on the right side, in whom hearing was restored from the deaf state immediately after tumor resection. Neuroimaging demonstrated a large mass in the right cerebellopontine angle, originating at the re...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


    authors: Katsuta T,Inoue T,Uda K,Masuda A

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  • Pituitary adenoma invading the skull base--a strategy for skull base surgery.

    abstract::A strategy for surgical management, including the approach and preoperative evaluation, of pituitary adenoma invading the skull base is described. Preoperative evaluation requires a balloon occlusion test of the internal carotid artery (ICA) to determine tolerance to occlusion. Failure to tolerate occlusion indicates ...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


    authors: Nakase H,Ohnishi H,Touho H,Takaoka M,Karasawa J,Kawaguchi M,Sakamoto T

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    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


    authors: Kumabe T,Nakasato N,Suzuki K,Sato K,Sonoda Y,Kawagishi J,Yoshimoto T

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    abstract::Measurement of cerebral blood flow (CBF) and computed tomography (CT) cisternography were performed in 37 patients with a tentative diagnosis of normal pressure hydrocephalus (NPH) to predict their surgical outcome. The mean CBF of the whole brain was measured quantitatively by single photon emission computed tomograp...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


    authors: Chang CC,Kuwana N,Ito S,Ikegami T

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  • [Brain metastasis from primary pericardial mesothelioma. Case report].

    abstract::A 50-year-old female was admitted because of nausea, vomiting, and cerebellar ataxia. Computed tomography scan revealed an enhanced mass accompanied with a cyst in the right cerebellar hemisphere. The mass situated in the subcortical region was removed. Histologically, highly vascular tumor cells lined the cavities. P...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


    authors: Asoh Y,Nakamura M,Maeda T,Shiogai T,Ogashiwa M,Takeuchi K,Watanabe K,Tanaka U,Matsuo E

    更新日期:1990-01-01 00:00:00

  • Intracranial tuberculoma in non-immunosuppressive state.

    abstract::The rise in the incidence of tuberculosis is generally related to human immunodeficiency virus infection. However, intracranial tuberculoma, a complication of tuberculosis considered to be a critical disease, can develop even in the absence of immunosuppressive state. Here, we describe 2 cases of intracranial tubercul...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


    authors: Matsumoto Y,Aikawa H,Narita S,Tsutsumi M,Yoshida H,Etou H,Sakamoto K,Inoue R,Nii K,Kazekawa K

    更新日期:2013-01-01 00:00:00

  • Primary intracranial epidermoid carcinoma--case report.

    abstract::A 38-year-old male who presented with trigeminal nerve paresis was found to have a cerebellopontine angle tumor. The tumor was subtotally removed. Multiple histological sections showed no malignant changes, and the diagnosis was typical epidermoid cyst. Tumor growth recurred twice and the diagnosis after the third ope...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章,评审


    authors: Nishiura I,Koyama T,Handa J,Amano S

    更新日期:1989-07-01 00:00:00

  • Effectiveness of maximal safe resection for glioblastoma including elderly and low Karnofsky performance status patients: retrospective review at a single institute.

    abstract::Elderly and low Karnofsky performance status (KPS) patients have been excluded from most prospective trials. This retrospective study investigated glioblastoma treatment outcomes, including those of elderly and low KPS patients, and analyzed the prognostic factors using the medical records of 107 consecutive patients,...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


    authors: Uzuka T,Aoki H,Natsumeda M,Takahashi H,Fujii Y

    更新日期:2012-01-01 00:00:00

  • Cerebellar hemorrhage secondary to cranial metastasis of prostate cancer--case report.

    abstract::A 77-year-old man with a 9-year history of prostate cancer presented with high fever and dysphagia. The initial diagnosis was aspiration pneumonia, but the patient became comatose 2 days after admission, and neuroradiological workup revealed cerebellar hemorrhage, obstructive hydrocephalus, and extensive destruction o...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


    authors: Inamasu J,Nakamura Y,Saito R,Kuroshima Y,Mayanagi K,Orii M,Ichikizaki K

    更新日期:2004-02-01 00:00:00

  • Correlations between Cognitive Impairments and Employment Status in Patients with Diffuse Axonal Injury.

    abstract::Patients with diffuse axonal injury (DAI) may initially present with prominent physical impairments, but their cognitive dysfunctions are more persistent and are attributable to later unemployment. In this study, we analyzed how the findings of early and delayed neuropsychological assessments correlated with employmen...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


    authors: Hirota S,Inaji M,Nariai T,Hara M,Tamaki M,Maehara T,Tomita H,Tone O

    更新日期:2017-02-15 00:00:00

  • Spontaneous resolution of delayed onset large subclavian artery pseudoaneurysm.

    abstract::A 70-year-old woman with a history of end-stage renal disease secondary to anti-neutrophil cytoplasmic autoantibody-associated vasculitis had been receiving hemodialysis for 5 years. The patient underwent attempted right internal jugular vein cannulation for temporary hemodialysis catheter placement. Pulsating mass de...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


    authors: Ohta T,Maekawa H,Kasuno K,Tsukamoto T,Muso E,Ishikawa M

    更新日期:2009-11-01 00:00:00

  • Unusual location of intracranial vagus neurinoma--case report.

    abstract::A 55-year-old male presented with hearing disturbance and tinnitus in the left ear. Computed tomography (CT) and magnetic resonance imaging demonstrated a well-defined, homogeneously enhanced mass in the left cerebellomedullary cistern without extension close to the jugular foramen. A three-dimensional image reconstru...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


    authors: Kamiguchi H,Ohira T,Kobayashi M,Ogino M,Shiobara R,Toya S

    更新日期:1995-09-01 00:00:00

  • [Results of microvascular decompression in 16 cases of glossopharyngeal neuralgia].

    abstract::Seven males and nine females with glossopharyngeal neuralgia were treated by microvascular decompression (MVD) over a 4-year period. Their ages ranged from 40 to 72 years (average, 54.7 years). The duration of pain ranged from 2 months to 13 years, and all except one patient had brief attacks of lancinating pain in th...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


    authors: Wakiya K,Fukushima T,Miyazaki S

    更新日期:1989-12-01 00:00:00

  • Technical advancements and utilization of spine surgery--international disparities in trend-dynamics between Japan, Korea, and the USA.

    abstract::Spine surgery has made radical advancements in the last two decades and provision has expanded a great deal. The history of the technical development is briefly reviewed. To analyze trends in utilization and to assess the macroeconomic demand for spine surgery, the incidence of all spine surgery per capita is estimate...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章,评审


    authors: Kim P,Kurokawa R,Itoki K

    更新日期:2010-01-01 00:00:00

  • Delayed radiation necrosis 7 years after gamma knife surgery for arteriovenous malformation--two case reports.

    abstract::A 44-year-old woman and a 55-year-old woman were treated with gamma knife surgery (GKS) for occipital arteriovenous malformation (AVM). Angiography confirmed complete nidus obliterations 2 years after GKS. However, both patients complained of chronic headache and visual symptoms from around 7 years after GKS. Magnetic...

    journal_title:Neurologia medico-chirurgica

    pub_type: 杂志文章


    authors: Oyoshi T,Hirahara K,Uetsuhara K,Yatsushiro K,Arita K

    更新日期:2010-01-01 00:00:00