keyword
MENU ▼
Read by QxMD icon Read
search

Cerebellopontine angle

keyword
https://www.readbyqxmd.com/read/29142153/prognostic-impact-and-post-operative-evaluation-of-volumetric-measurement-of-the-cerebellopontine-cistern-in-trigeminal-neuralgia-using-3-tesla-magnetic-resonance-imaging
#1
Yoshiki Obata, Yoshihisa Kawano, Yoji Tanaka, Taketoshi Maehara
The aim of this study was to evaluate the importance of pre- and post-operative volumetric measurement of the cerebellopontine angle (CPA) using 3 Tesla (3T) magnetic resonance imaging (MRI). Between April 2012 and December 2015, a total of 87 consecutive patients underwent microvascular decompression (MVD) for trigeminal neuralgia (TN), of whom 51 with primary TN caused by arterial compression were enrolled in this study. Bilateral CPA cistern volume was evaluated using 3T MRI before and after surgery; the Cistern Deviation Index was used to represent the degree of deviation of the CPA cistern...
November 14, 2017: Neurologia Medico-chirurgica
https://www.readbyqxmd.com/read/29135868/endoscopic-transcanal-transpromontorial-approach-for-vestibular-schwannoma-resection-a-case-series
#2
Cameron C Wick, Demetri Arnaoutakis, Samuel L Barnett, Alejandro Rivas, Brandon Isaacson
OBJECTIVE: To demonstrate successful surgical management of vestibular schwannomas via an exclusively endoscopic transcanal transpromontorial approach (EETTA). PATIENTS: Four patients with vestibular schwannomas. INTERVENTIONS: Surgical excision via EETTA. MAIN OUTCOMES: Technique refinements, tumor access, complete tumor removal, and patient morbidity. RESULTS: Three tumors were Koos grade I and one tumor was Koos grade II...
December 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29134162/lesions-mimicking-small-vestibular-schwannomas
#3
Matthias Scheich, Rudolf Hagen, Desiree Ehrmann-Müller, Brigitte Bison, Thomas Günthner-Lengsfeld, Camelia-Maria Monoranu, Hans-Ullrich Völker
Objective  Most tumors of the internal auditory canal and cerebellopontine angle (CPA) are vestibular schwannomas (VSs). Preoperative diagnosis is based on typical clinical symptoms and radiological findings. In rare cases, histopathology can, however, show different results. Design  This is a retrospective chart and database review. Setting  The study was conducted at a tertiary skull base referral center at a university hospital. Participants  A total of 207 consecutive cases of VS surgery via the middle cranial fossa approach performed between December 2005 and January 2015 were reviewed...
December 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29107410/contralateral-trigeminal-neuralgia-in-a-rapidly-growing-vestibular-schwannoma-a-case-report
#4
Youngbeom Seo, Dong Gyu Kim
We present a rare case of vestibular schwannoma (VS) with contralateral trigeminal neuralgia. A 59 year-old woman presented with right-sided trigeminal neuralgia and a small VS in the left cerebellopontine angle (CPA) that was found via magnetic resonance imaging. The patient was administered medication; however, her symptoms gradually aggravated, and the size of the tumor increased. Two years after the initial diagnosis, the patient underwent surgical resection. After surgical resection, the patient's facial pain was improved...
October 26, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29101072/spontaneously-resolving-symptomatic-subdural-hygromas-after-cerebellopontine-angle-tumor-surgery
#5
Etienne Lefevre, Anne Sophie Montero, Daniele Bernardeschi, Michel Kalamarides
BACKGROUND: Subdural hygroma is a rare pathology most commonly encountered in post-traumatic patients. Even more rarely, it has been described as a complication of cerebellopontine angle tumor requiring surgical evacuation. CASE DESCRIPTION: This report discusses two patients who underwent surgery for cerebellopontine angle tumor and who both developed symptomatic subdural hygromas a few days later. Both became highly symptomatic but symptoms resolved spontaneously and promptly before planned surgery...
October 31, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29091245/intracranial-epidermoid-lesions-our-experience-of-38-cases
#6
Lal Rehman, Iram Bokhari, Shamim Ul Siddiqi, Veejay Bagga, Muhammad Masood Hussain
BACKGROUND: The clinical outcome following surgical resection of intracranial epidermoid lesions is not well documented. We describe a case series evaluating the clinical presentation and outcome following surgery in patients diagnosed with these lesions. MATERIALS AND METHODS: A retrospective study conducted over a 4-year period. RESULTS: A total 38 patients who underwent surgery for intracranial epidermoid lesions were identified. Of these, 20 were supertentorial and 18 were infratentorial lesions...
October 2, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/29080147/non-invasive-intraoperative-monitoring-of-cochlear-function-by-cochlear-microphonics-during-cerebellopontine-angle-surgery
#7
Blandine Lourenço, Béatriz Madero, Stéphane Tringali, Xavier Dubernard, Toufic Khalil, André Chays, Arnaud Bazin, Thierry Mom, Paul Avan
In vestibular-schwannoma (VS) surgery, hearing-preservation rate remains low. Besides damage to the cochlear nerve, intraoperative cochlear ischemia is a potential cause of hearing loss. Here, we used non-invasive cochlear microphonic (CM) recordings to detect the cochlear vascular events of VS surgery. Continuous intraoperative CM monitoring, in response to 80-95 dB SPL, 1-kHz tone-bursts, was performed in two samples of patients undergoing retrosigmoid cerebellopontine-angle surgery: one for VS (n = 31) and one for vestibular neurectomy or vasculo-neural conflict causing intractable trigeminal neuralgia, harmless to hearing (n = 19, control group)...
October 27, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/29079887/preoperative-determination-of-nerve-of-origin-in-patients-with%C3%A2-vestibular%C3%A2-schwannoma
#8
T Rahne, S Plößl, S K Plontke, C Strauss
BACKGROUND: Vestibular schwannoma (VS) is a benign tumor that develops in the internal auditory canal and the cerebellopontine angle, potentially diminishing hearing or balance. Most VS tumors arise from one of two vestibular branches: the superior or inferior vestibular nerve. Determining the specific nerve of origin could improve patient management in terms of preoperative counseling, treatment selection, and surgical decision-making and planning. The aim of this study was to introduce a novel scoring system that was designed to determine the nerve of origin...
October 27, 2017: HNO
https://www.readbyqxmd.com/read/29073668/congenital-epidermoid-cyst-presenting-as-isolated-painful-trigeminal-neuropathy-indications-for-neuroimaging-in-the-diagnostic-process
#9
Kimberley Kok, Chris Sproat, Mun-Seng Chong, Chris Chandler, Nick Thomas, Hoong-Wei Gan
This article reports a case of a cerebellopontine angle epidermoid cyst presenting as isolated painful trigeminal neuropathy. The indolent nature of these uncommon benign tumors leads to frequent delays in their presentation and diagnosis, with patients often initially undergoing dental procedures. This is illustrated in the present case reported here, which highlights the difficulties in identifying trigeminal neuralgia (TN), particularly in its early phases, and supports current recommendations for routine neuroimaging in suspected cases of painful trigeminal neuropathy, which, unlike classic TN, is caused by a disorder other than neurovascular compression (even in the absence of additional neurologic symptoms or signs) and is present particularly in younger patients with atypical features...
October 2017: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/29064830/evaluation-of-vascular-variations-at-cerebellopontine-angle-by-3d-t2wi-magnetic-resonance-imaging-in-patients-with-vertigo
#10
Fatma Beyazal Celiker, Engin Dursun, Metin Celiker, Tugba Durakoglugil, Mehmet Beyazal, Mehmet Fatih Inecikli, Abdulkadir Ozgur, Suat Terzi
BACKGROUND: Vascular loops of the anterior-inferior cerebellar artery (AICA) at the cerebellopontine angle (CPA) are considered related to auditory-vestibular symptoms. Clinical association of these anatomical aberrations, which can be grouped together as vascular compression syndromes, is controversial. Magnetic resonance imaging (MRI) is widely used to visualize this anatomical region, given its high sensitivity and specificity. OBJECTIVE: To elucidate the clinical relationship of vertigo symptoms with vascular loop compression syndrome by evaluating the neurovascular contacts of the vestibulocochlear nerve (VCN) and AICA at the CPA and internal auditory canal via high-resolution MRI...
2017: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29057182/anterior-inferior-cerebellar-arteries-juxtaposed-with-the-internal-acoustic-meatus-and-their-relationship-to-the-cranial-nerve-vii-viii-complex
#11
Fernando Alonso, Mohammad W Kassem, Joe Iwanaga, Rod J Oskouian, Marios Loukas, Amin Demerdash, R Shane Tubbs
Vascular loops in the cerebellopontine angle (CPA) and their relationship to cranial nerves have been used to explain neurological symptoms. The anterior inferior cerebellar artery (AICA) has variable branches producing vascular loops that can compress the facial cranial nerve (CN) VII and vestibulocochlear (CN VIII) nerves. AICA compression of the facial-vestibulocochlear nerve complex can lead to various clinical presentations, including hemifacial spasm (HFS), tinnitus, and hemiataxia. The formation of arterial loops inside or outside of the internal auditory meatus (IAM) can cause abutment or compression of CN VII and CN VIII...
August 16, 2017: Curēus
https://www.readbyqxmd.com/read/29054899/lung-adenocarcinoma-metastastic-lesion-in-the-internal-auditory-meatus
#12
Eugene Hung Chih Wong, Daniel Bodmer, Nora Tetter, Yves Brand
Metastasis to the cerebellopontine angle (CPA) or internal auditory meatus (IAM) is rare.We report a rare case of a 69-year-old woman with metastatic lung adenocarcinoma, who presented with 2 weeks history of left-sided hearing loss and progressively worsening vertigo. Examination revealed a left-sided facial nerve palsy while pure tone audiometry (PTA) showed a new left-sided deafness. MRI showed a new enhancing soft tissue lesion in the left IAM, highly suspicious of new metastases from her progressive lung cancer, which contributed to her neuro-otological symptoms...
October 20, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29040677/navigation-linked-heads-up-display-in-intracranial-surgery-early-experience
#13
Justin R Mascitelli, Leslie Schlachter, Alexander G Chartrain, Holly Oemke, Jeffrey Gilligan, Anthony B Costa, Raj K Shrivastava, Joshua B Bederson
BACKGROUND: The use of intraoperative navigation during microscope cases can be limited when attention needs to be divided between the operative field and the navigation screens. Heads-up display (HUD), also referred to as augmented reality, permits visualization of navigation information during surgery workflow. OBJECTIVE: To detail our initial experience with HUD. METHODS: We retrospectively reviewed patients who underwent HUD-assisted surgery from April 2016 through April 2017...
October 10, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29036751/-diagnosis-and-management-of-vestibular-schwannomas-an-interdisciplinary-challenge
#14
Steffen Rosahl, Christopher Bohr, Michael Lell, Klaus Hamm, Heinrich Iro
Vestibular schwannomas expand slowly in the internal auditory canal, in the cerebellopontine angle, inside the cochlear and the labyrinth. Larger tumors can displace and compress the brainstem. With an annual incidence of 1:100 000 vestibular schwannoma represent 6-7% of all intracranial tumors. In the cerebellopontine angle they are by far the most neoplasm with 90% of all lesions located in this region. Magnetic resonance imaging (MRI), audiometry, and vestibular diagnostics are the mainstays of the clinical workup for patients harboring tumors...
April 2017: Laryngo- Rhino- Otologie
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
#15
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/29018206/tumor-penetrating-delivery-of-sirna-against-tnf%C3%AE-to-human-vestibular-schwannomas
#16
Yin Ren, Jessica E Sagers, Lukas D Landegger, Sangeeta N Bhatia, Konstantina M Stankovic
Vestibular schwannoma (VS) is the most common tumor of the cerebellopontine angle, and it typically presents with sensorineural hearing loss. The genomic landscape of schwannoma is complex and many of the molecules implicated in VS pathogenesis represent targets not amenable to antibody-based or small molecule therapeutics. Tumor-targeted delivery of small interfering RNA (siRNA) therapeutics provides a direct and effective means to interrogate targets while minimizing off-target effects. To establish a preclinical model for therapeutic inhibition of putative targets in VS, archived tumor specimens, fresh tumor cells derived from patients with sporadic VS, and an established schwannoma cell line were screened...
October 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28985828/cerebellopontine-angle-astrocytoma-producing-bruns-nystagmus-mimicking-vestibular-schwannoma
#17
Brian S Park, Stacy V Smith, Ama Sadaka, Andrew G Lee
No abstract text is available yet for this article.
October 2017: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/28984808/cochlear-dysfunction-is-not-common-in-human-meningioma-of-the-internal-auditory-canal
#18
Lukas D Landegger, Jong D Lee, Fred H Linthicum, Konstantina M Stankovic
HYPOTHESIS: Cochlear dysfunction is not common in human meningioma of the internal auditory canal. BACKGROUND: Meningiomas arising from the cerebellopontine angle and internal auditory canal typically cause hearing loss. Cochlear dysfunction is known to contribute to sensorineural hearing loss induced by vestibular schwannoma, the most common tumor of the internal auditory canal. Detailed cochlear histopathology in meningioma has not been reported. METHODS: Retrospective analysis of cochlear histopathology in five unoperated and five operated meningiomas of the internal auditory canal identified after screening human temporal bone collections from three academic medical centers...
December 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28983447/surgical-management-and-outcome-experience-of-53-cerebellopontine-angle-meningiomas
#19
Xiaosheng He, Weiping Liu, Yangang Wang, Jun Zhang, Buqing Liang, Jason H Huang
Background Meningiomas follow schwannomas as the second most common cerebellopontine angle (CPA) tumors. We investigate the diagnosis, management, and prognosis of this disease. Methods We reviewed the cases with the CPA meningiomas in our institution in Shaanxi, China from January 2012 to December 2015. Charts were retrospectively examined and patients were divided into two groups: 1) surgical treatment with a retrosigmoid approach for tumor resection and 2) stereotactic radiosurgery treatment only. Patients were followed up and outpatient records were also reviewed...
August 3, 2017: Curēus
https://www.readbyqxmd.com/read/28977813/-hearing-rehabilitation-with-the-cochlea-implant-following-translabyrinthine-cpa-tumor-removal
#20
Jörg Schipper, Julia Kristin, Simone Volpert, Thomas Klenzner
We present a quality analysis of 10 patients with an individual treatment trial for a simultaneous or consecutive cochlea implantation after translabyrinthine removal of a neurinoma at the cerebellopontine angle. The results show that most of the patients benefit from the cochlea implantation after unilateral deafness. Through a careful surgical preparation technique at the inner ear canal and its surroundings the morphological and functional integrity of the neurovascular structures can be guaranteed.
October 4, 2017: Laryngo- Rhino- Otologie
keyword
keyword
31431
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"