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Vestibulocochlear Nerve

Jan-Folkard Willms, Gerasimos Baltsavias, Jan-Karl Burkhardt, Silvia Ernst, Alexander A Tarnutzer
We discuss a case with combined vestibulocochlear and facial neuropathy mimicking a less urgent peripheral vestibular pattern of acute vestibular syndrome (AVS). With initial magnetic resonance imaging read as normal, the patient was treated for vestibular neuropathy until headaches worsened and a diagnosis of subarachnoid hemorrhage was made. On conventional angiography, a ruptured distal right-sided aneurysm of the anterior inferior cerebellar artery was diagnosed and coiled. Whereas acute vestibular loss usually points to a benign peripheral cause of AVS, combined neuropathy of the vestibulocochlear and the facial nerve requires immediate neuroimaging focusing on the cerebellopontine angle...
October 13, 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
Adem Binnetoğlu, Tekin Bağlam, Murat Sarı, Yavuz Gündoğdu, Çağlar Batman
Duplication of the internal auditory canal is an uncommon, congenital malformation that can be associated with sensorineural hearing loss owing to aplasia/hypoplasia of the vestibulocochlear nerve. Only 14 such cases have been reported to date. We report the case of a 13-month-old girl with bilateral, congenital, sensorineural hearing loss caused by narrow, duplicated internal auditory canals and discuss the challenges encountered in the diagnosis and treatment of this condition.
August 2016: Journal of International Advanced Otology
Abir Oueida El Sadik, Mohamed Hafez Shaaban
BACKGROUND: Internal auditory canal (IAC) stenosis and vestibulocochlear nerve abnormalities have been reported to be associated with sensorineural hearing loss (SNHL). Previous studies classified the normal dimensions of the IAC and its anomalies with no consideration of the vestibulochoclear nerve. Other studies categorized the vestibulocochlear nerve development in only stenotic canals. In the present study, an anatomical classification of the normal dimensions of the IAC and its anomalies and their association with malformations of the vestibulocochlear nerve and its subdivisions were described...
September 26, 2016: Folia Morphologica (Warsz)
Mariasavina Severino, Marta Bertamino, Domenico Tortora, Giovanni Morana, Sara Uccella, Renata Bocciardi, Roberto Ravazzolo, Andrea Rossi, Maja Di Rocco
BACKGROUND: Fibrodysplasia ossificans progressiva is an autosomal dominant disorder due to germline mutations of ACVR1/ALK2 causing progressive heterotopic endochondral ossifications. Evidence of central nervous system involvement has emerged only recently. METHODS: We performed an observational cross-sectional brain MRI study in 13 patients (8 females, mean age 20 years), examining the relationship of clinical and neuroradiological findings. RESULTS: All patients presented small asymptomatic lesions similar to hamartomas at the level of the dorsal medulla and ventral pons, associated with minor brainstem dysmorphisms and abnormal origin of the vestibulocochlear and facial nerves...
August 26, 2016: Journal of Medical Genetics
Figen Bakirtas Palabiyik, Kadir Hacikurt
Imaging plays an important role in determining indications of cochlear implantation and choosing candidates for the procedure in children. Temporal high-resolution computed tomography (HRCT) and magnetic resonance imaging (MRI) can display precisely the complex anatomic structure of inner ear. Although HRCT permits detailed imaging of bony structures, MRI gives valuable information about membranous labyrinth, internal acoustic canal, and vestibulocochlear nerve. Magnetic resonance imaging examination of the brain should be performed at the same time to evaluate any coexistent brain parenchymal abnormality...
October 2016: Journal of Craniofacial Surgery
Özgür Sürmelioğlu, Özgür Tarkan, Süleyman Özdemir, Ülkü Tuncer, Mete Kıroğlu, Funda Akar Atik
Diagnostic imaging methods are very important for patients with bilateral sensourinoural hearing loss. Magnetic resonance imaging (MRI) is able to demonstrate the vestibulocochlear nerve and facial nerve in the internal acoustic canal. Also computed tomography can be helpful to determination of the deficiency of the cochlear nerve. Cochlear nerve anomalies are classified into three group according to the magnetic resonance imagings. Patients who have cochlear nerve deficiency may not hear with cochlear amplifications...
August 2016: Journal of International Advanced Otology
David E Newman-Toker, Charles C Della Santina, Ari M Blitz
Symptoms referable to disorders affecting the inner ear and vestibulocochlear nerve (eighth cranial nerve) include dizziness, vertigo, tinnitus, and hearing loss, in various combinations. Similar symptoms may occur with involvement of the central nervous system, principally the brainstem and cerebellum, to which the vestibular and auditory systems are connected. Imaging choices should be tailored to patient symptoms and the clinical context. Computed tomography (CT) should be used primarily to assess bony structures...
2016: Handbook of Clinical Neurology
Benjamin Misselwitz, Jana Epprecht, Joachim Mertens, Luc Biedermann, Michael Scharl, Eugenia Haralambieva, Andreas Lutterotti, Konrad P Weber, Beat Müllhaupt, Karla Chaloupka
Hepatitis C is frequently accompanied by immune-related extrahepatic manifestations affecting the skin, kidneys, central and peripheral nervous system and exocrine glands. We present the case of a 40-year-old man with left-sided ptosis, exophthalmos and headache. MRI demonstrated left-sided orbital pseudotumor with lacrimal and retro-orbital contrast enhancement extending to the cavernous sinus and the vestibulocochlear nerve. Immunological tests of serum and cerebrospinal fluid identified hepatitis C virus (HCV) as a potential causative agent but did not indicate any additional infectious, malignant or immunological disorder...
January 2016: Case Reports in Gastroenterology
A I Kryukov, N L Kunel'skaya, E V Garov, V V Mishchenko
No abstract text is available yet for this article.
2016: Vestnik Otorinolaringologii
S M Rueckriegel, G A Homola, M Hummel, N Willner, R-I Ernestus, C Matthies
BACKGROUND AND PURPOSE: Vestibular schwannomas cause progressive hearing loss by direct damage to the vestibulocochlear nerve. The cerebral mechanisms of degeneration or plasticity are not well-understood. Therefore, the goal of our study was to show the feasibility of probabilistic fiber-tracking of the auditory pathway in patients with vestibular schwannomas and to compare the ipsi- and contralateral volume and integrity, to test differences between the hemispheres. MATERIALS AND METHODS: Fifteen patients with vestibular schwannomas were investigated before surgery...
September 2016: AJNR. American Journal of Neuroradiology
Xiuhua Chao, Jianfen Luo, Zhaomin Fan, Honglu Shi, Yuechen Han, Ruijie Wang, Yujie Song, Guangbin Wang, Haibo Wang, Lei Xu
CONCLUSION: Children with CND received limited benefits from CIs and their results varied. The size of the vestibulocochlear nerve relative to the facial nerve could potentially be used as a predicator for CI outcomes in children with CND. OBJECTIVE: This study aimed to (1) retrospectively review the outcomes of cochlear implants (CIs) in children with cochlear nerve deficiency (CND) and (2) evaluate the clinical usefulness of radiological findings as predictors for post-implantation outcomes...
October 2016: Acta Oto-laryngologica
Jacob B Hunter, Alejandro Rivas
There have been recent reports of sarcoid-like granulomatosis development following the administration of tumor necrosis factor (TNF) inhibitors. To date, only four cases of neurosarcoidosis have been reported in association with TNF inhibitors, two of which were attributed to etanercept. We present the first case of etanercept-induced neurosarcoidosis involving multiple cranial neuropathies, including the trigeminal, facial, and vestibulocochlear nerves, while also highlighting the differential diagnoses of multiple cranial neuropathies and the association of TNF inhibitors and neurosarcoidosis...
May 2016: American Journal of Otolaryngology
Bryan K Ward, Daniel R Gold
Vestibular paroxysmia is the name given to vascular compression of the vestibulocochlear nerve. Substantial evidence has been discovered in support of vascular compression of the trigeminal nerve as the etiology for trigeminal neuralgia, and effective therapies have been targeted to address this pathophysiology. Perhaps due to the common and often vaguely-described symptoms of dizziness and tinnitus, vascular compression of the vestibulocochlear nerve as a cause of symptoms has remained controversial. Recent clinical studies, however, have better defined diagnostic criteria for vestibular paroxysmia...
2016: Open Journal of Clinical & Medical Case Reports
Masanori Yoshino, Kumar Abhinav, Fang-Cheng Yeh, Sandip Panesar, David Fernandes, Sudhir Pathak, Paul A Gardner, Juan C Fernandez-Miranda
BACKGROUND: Recent studies have demonstrated diffusion tensor imaging tractography of cranial nerves (CNs). Spatial and angular resolution, however, is limited with this modality. A substantial improvement in image resolution can be achieved with high-angle diffusion magnetic resonance imaging and atlas-based fiber tracking to provide detailed trajectories of CNs. OBJECTIVE: To use high-definition fiber tractography to identify CNs in healthy subjects and patients with brain tumors...
July 2016: Neurosurgery
Carlos de Paula-Vernetta, Noelia Muñoz-Fernández, Fernando Mas-Estellés, Abel Guzmán-Calvete, Laura Cavallé-Garrido, Constantino Morera-Pérez
INTRODUCTION AND OBJECTIVES: Prevalence of congenital sensorineural hearing loss (SNHL) is approximately 1.5-6 in every 1,000 newborns. Dysfunction of the auditory nerve (auditory neuropathy) may be involved in up to 1%-10% of cases; hearing losses because of vestibulocochlear nerve (VCN) aplasia are less frequent. The objectives of this study were to describe clinical manifestations, hearing thresholds and aetiology of children with SNHL and VCN aplasia. METHODOLOGY: We present 34 children (mean age 20 months) with auditory nerve malformation and profound HL taken from a sample of 385 children implanted in a 10-year period...
September 2016: Acta Otorrinolaringológica Española
Kazuhiko Nishino, Hitoshi Hasegawa, Kenichi Morita, Masafumi Fukuda, Yasushi Ito, Yukihiko Fujii, Mitsuya Sato
OBJECTIVE Arteriovenous malformations (AVMs) in the cerebellopontine angle cistern (CPAC) are specific lesions that can cause neurovascular compression syndromes as well as intracranial hemorrhage. Although case reports describing the CPAC AVMs, especially those presenting with trigeminal neuralgia (TN), have been accumulating by degrees, the pathophysiology of CPAC AVMs remains obscure. The authors' purpose in the present study was to evaluate the clinical and radiographic features of CPAC AVMs as well as the treatment options...
April 1, 2016: Journal of Neurosurgery
Emma Brown, Konrad Staines
We present a case of a fifty-year-old male patient who was referred to the Oral Medicine Department with a complaint of a salty taste. History taking subsequently revealed that the patient was also experiencing intermittent numbness of his left lower lip, tinnitus, and a feeling of fullness in the left ear. Magnetic resonance imaging was performed which revealed a large vestibular schwannoma affecting the left vestibulocochlear nerve, which was treated surgically. This case shows the importance of taking a detailed history in a patient presenting with an initial complaint of oral dysgeusia...
2016: Case Reports in Dentistry
N L Kunel'skaya, A N Yatskovsky, V V Mishchenko
The objective of the present study was to elucidate the topographic features of the nerve fibers belonging to the acoustic and vestibular analyzers located in the intracranial cranial segment of human vestibulocochlear nerve (VCN). A total of 16 samples of the intracranial cranial segment of the human vestibulocochlear nerve isolated from the region enclosed between the exit of VCN from the brainstem and its entrance into the internal acoustic meatus were available for the investigation. Prior to fixation of the samples, the VCN segments were marked in correspondence with their intravital anatomical location in the posterior cranial fossa...
2016: Vestnik Otorinolaringologii
Münir Demir Bajin, Özden Savaş, Filiz Aslan, Levent Sennaroğlu
BACKGROUND: Neurobrucellosis is a disease consisting of a wide spectrum of complications such as peripheral neuropathy, cranial nerve involvement, ataxia, meningeal irritation, paraplegia, seizures, coma, and even death. The vestibulocochlear nerve seems to be the most commonly affected cranial nerve (10%). We present a patient with neurobrucellosis whose auditory perception and speech intelligibility skill performances improved after cochlear implantation. CASE REPORT: A 35 year-old woman was admitted to another hospital 2 years ago with the symptoms of headache, nausea, and altered consciousness, who was finally diagnosed with neurobrucellosis...
January 2016: Balkan Medical Journal
Sandra Kapitza, Athina Pangalu, Gerhard A Horstmann, Albert T van Eck, Luca Regli, Alexander A Tarnutzer
We discuss a rare acute complication after Gamma Knife therapy (Elekta AB, Stockholm, Sweden) in a single patient. A 52-year-old woman presented with vertigo, facial weakness and hearing loss emerging 48hours following Gamma Knife radiosurgery for a right-sided vestibular schwannoma. Neurological examination 6days after symptom onset showed right-sided facial palsy, spontaneous left-beating nystagmus and pathologic head-impulse testing to the right. Pure-tone audiogram revealed right-sided sensorineural hearing loss...
August 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
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