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Cerebellopontine angle

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https://www.readbyqxmd.com/read/29781154/neuroglial-ectopia-of-the-vestibular-nerve-masquerading-as-a-vestibular-schwannoma-a-case-report
#1
John P Sheppard, Carlito Lagman, Thien Nguyen, Négar Khanlou, Quinton Gopen, Isaac Yang
Neuroglial ectopia is a rare entity of undetermined clinical significance. Here, we report a unique case of neuroglial ectopia of the vestibular nerve. A 27-year-old pharmacy student with a previous radiological diagnosis of vestibular schwannoma presented to our clinic for surgical evaluation. Magnetic resonance imaging (MRI) of the brain revealed a 17-mm T1 hypo- to isointense, T2 iso- to hyperintense, poorly enhancing left cerebellopontine angle mass extending into the left internal auditory canal compatible by imaging with a vestibular schwannoma...
May 20, 2018: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/29779186/mastoid-foramen-mastoid-emissary-vein-and-clinical-implications-in-neurosurgery
#2
Martin Hampl, David Kachlik, Katerina Kikalova, Roxane Riemer, Matej Halaj, Vlastimil Novak, Premysl Stejskal, Miroslav Vaverka, Lumir Hrabalek, David Krahulik, Ondrej Nanka
BACKGROUND: Mastoid emissary vein is especially important from the neurosurgical point of view, because it is located in variable number in the area of the occipitomastoid suture and it can become a source of significant bleeding in surgical approaches through the mastoid process, especially in retrosigmoid craniotomy, which is used for approaches to pathologies localized in the cerebellopontine angle. Ideal imaging method for diagnosis of these neglected structures when planning a surgical approach is high-resolution computed tomography...
May 20, 2018: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29777888/primary-intracranial-rhabdomyosarcoma-in-the-cerebellopontine-angle-resected-after-preoperative-embolization
#3
Keisuke Yoshida, Tomoru Miwa, Takenori Akiyama, Masaaki Nishimoto, Dai Kamamoto, Kazunari Yoshida
BACKGROUND: Primary intracranial rhabdomyosarcoma is a very rare malignant tumor. Due to moderately vascular and firm characteristics of the tumor, complete removal without complications is often difficult. Moreover, in pediatric patients, the volume of total blood is less than adults and minimal intraoperative hemorrhage is desirable. CASE DESCRIPTION: A 6-year-old boy presented with ataxia and was found to have a large cerebellopontine angle tumor and hydrocephalus...
May 16, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29770250/the-usefulness-of-indocyanine-green-during-surgery-for-hypervascular-posterior-fossa-tumors
#4
Takahiro Shinya, Hideki Nagamine, Ken-Ichi Sugawara, Shogo Ishiuchi
Background: Cerebral hemangioblastomas are benign tumors with abundant blood flow that occur mainly in the posterior fossa. Tumor removal en bloc is important in surgical treatment because of the risk of bleeding; however, it is actually rather difficult in practice. Therefore, we propose a surgical strategy for visualizing hypervascular tumors of the posterior fossa utilizing indocyanine green (ICG). Case Description: Case 1 involved a 48-year-old male with a history of von Hippel-Lindau (VHL) disease...
2018: Surgical Neurology International
https://www.readbyqxmd.com/read/29768355/infantile-medulloepithelioma-in-the-lateral-ventricle-and-cerebellopontine-angle-two-case-reports
#5
Qiang Li, Ni Chen, Yan Ju
RATIONALE: Intracranial medulloepitheliomas are extremely rare and highly malignant. Intraventricular medulloepitheliomas are even rarely reported, and little is known about the clinical features. PATIENT CONCERNS: In this article, we report two cases of intracranial medulloepitheliomas. In the first patient, a one-month old boy, the tumor was located in in right lateral ventricle, which was the first report of such location of this disease; in the second patient, an eleven-month old girl, the tumor was in right cerebellopontine angle...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29766943/brain-stem-hemangioblastomas-the-seemingly-innocuous-lesion-in-a-perilous-location
#6
Jeena Joseph, Sanjay Behari, Shruti Gupta, Kamlesh Singh Bhaisora, Anish Gandhi, Arun Srivastava, Awadhesh K Jaiswal
Introduction: Hemangioblastomas [75% sporadic, 25% with Von Hippel Lindau (VHL) disease] are highly vascular, benign lesions. The surgical nuances, management, and complication avoidance in brain-stem hemangioblastomas (BHs) have been studied. Material and Methods: Over 18 years, 27(mean age: 29 years; range 15-60 years) consecutive cases of BH underwent microsurgical excision. All patients were assessed clinico-radiologically for neurological deficits and screened for VHL disease...
May 2018: Neurology India
https://www.readbyqxmd.com/read/29765825/early-career-surgical-practice-for-cerebellopontine-angle-tumors-in-the-era-of-radiosurgery
#7
Giannantonio Spena, Tommaso Sorrentino, Roberto Altieri, Luca Redaelli de Zinis, Roberto Stefini, Pier Paolo Panciani, Marco Fontanella
We analyzed the outcomes of patients with large cerebellopontine angle (CPA) tumors treated by a skull-base team in which two surgeons (one neurosurgeon and one otological surgeon) were in the beginning of their careers (<40 years old). Data of patients operated on between April 2012 and March 2016 were reviewed. All factors related to surgical training were considered. Thirty-one patients had vestibular schwannomas, while 26 had meningiomas. Mean tumor diameter was 30.6 mm (range, 23-49 mm) for schwannomas and 35 mm (range, 22-51 mm) for meningiomas...
June 2018: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29765166/diagnosis-of-retrocochlear-lesions-with-emphasis-on-expansion-of-the-cerebellopontine-angle
#8
Bretislav Gal, Jan Rottenberg, Marta Pazourkova, Jiri Vanicek, Ermis Vogazianos
The correct diagnosis of CPA tumours is a relatively common issue in both neurological and ENT practice, the omission of which can have serious consequences for the patient. Properly set clinical guidelines and diagnostic protocols are key aspects of good clinical practice. In the case of CPA tumours, two options are available: the first is diagnosis with the help of an ABR as the primary tool for determining the group of patients with a possible tumour; the second is an MRI scan of the posterior cranial fossa...
April 17, 2018: Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia
https://www.readbyqxmd.com/read/29764030/-neuroendoscopy-assisted-microneurosurgery-for-posterior-cranial-fossa-lesion
#9
J Li, D Zhong, D Lü, H Y Huang, W Du, J Yang, Y T Wu, H J Xia, W Y Tang, X C Sun
Objective: To study the value of neuroendoscopy assisted microneurosurgery technique in the treatment of posterior cranial fossa lesion. Methods: Clinical data of 36 patients with posterior fossa lesions who accepted neuroendoscopy assisted microneurosurgery (NEAM group) in the department of neurosurgery of the First Affiliated Hospital of Chongqing Medical University, from January 2014 to December 2016, were retrospectively enrolled. A total of 113 cases diagnosed with the same lesions and accepted conventional microneurosurgery (non-NEAM group) in the same period were analyzed as control group...
May 8, 2018: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29738390/incidence-and-risk-factors-for-sigmoid-venous-thrombosis-following-cpa-tumor-resection
#10
Matthew Shew, Hannah Kavookjian, Kelly Dahlstrom, Thomas Muelleman, James Lin, Paul Camarata, Luke N Ledbetter, Hinrich Staecker
OBJECTIVE: Our primary aim was to determine the incidence of sigmoid venous thrombosis (SVT) and determine risks factors and sequelae of SVT following cerebellopontine angle tumor resection. STUDY DESIGN: Retrospective cohort study. SETTING: Academic tertiary care hospital. PATIENTS: Patients over 18 years of age who underwent resection of cerebellopontine angle meningioma or vestibular schwannoma from January 2005 to April 2016 who had postoperative magnetic resonance imaging...
June 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29726777/surgical-outcomes-after-reoperation-for-recurrent-skull-base-meningiomas
#11
Stephen T Magill, David S Lee, Adam J Yen, Calixto-Hope G Lucas, David R Raleigh, Manish K Aghi, Philip V Theodosopoulos, Michael W McDermott
OBJECTIVE Skull base meningiomas are surgically challenging tumors due to the intricate skull base anatomy and the proximity of cranial nerves and critical cerebral vasculature. Many studies have reported outcomes after primary resection of skull base meningiomas; however, little is known about outcomes after reoperation for recurrent skull base meningiomas. Since reoperation is one treatment option for patients with recurrent meningioma, the authors sought to define the risk profile for reoperation of skull base meningiomas...
May 4, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29691775/cranial-nerve-outcomes-after-primary-stereotactic-radiosurgery-for-symptomatic-skull-base-meningiomas
#12
Andrew Faramand, Hideyuki Kano, Ajay Niranjan, Stephen A Johnson, Mohab Hassib, Kyung-Jae Park, Yoshio Arai, John C Flickinger, L Dade Lunsford
OBJECTIVE: To evaluate cranial nerve (CN) outcomes after primary stereotactic radiosurgery (SRS) for petroclival, cavernous sinus, and cerebellopontine angle meningiomas. METHODS: From our prospectively maintained database of 2022 meningioma patients who underwent Leksell stereotactic radiosurgery (SRS) during a 30-year interval, we found 98 patients with petroclival, 242 with cavernous sinus, and 55 patients with cerebellopontine angle meningiomas. Primary radiosurgery was performed in 245 patients...
April 24, 2018: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29686816/evaluation-of-the-prognostic-value-of-multimodal-intraoperative-monitoring-in-posterior-fossa-surgery-patients-with-cerebellopontine-angle-tumors
#13
Mohsen Dalvandi, Ali Nazemi Rafie, Alireza Kamali, Alireza Jamshidifard
The aim of this study was to compare the outcomes of four intraoperative monitoring approaches in order to compare their prognostic value in surgical complications of the facial nerve. This quasi-experimental study was conducted on 25 patients with Cerebellopontine Angle (CPA) tumors, who were hospitalized in the Valiasr Hospital, affiliated to the Arak University of Medical Sciences, Arak, Iran. The degree of the facial nerve paralysis was assessed based on the House-Brackmann (HB) facial nerve grading system...
January 12, 2018: European Journal of Translational Myology
https://www.readbyqxmd.com/read/29685408/staged-multi-modality-treatment-approaches-for-giant-cerebellopontine-angle-hemangioblastomas
#14
Michael D Staudt, Matthew O Hebb
Giant hemangioblastomas (HBs) located in the cerebellopontine angle (CPA) present rare, high risk neurosurgical challenges. En bloc resection has been traditionally recommended for HBs, however this approach may pose unacceptable risk with giant tumors. Alternative treatment strategies have not been well described and the relevant literature is scant. This case review includes an illustrative patient with a giant, symptomatic CPA HB. It was felt that the neurovascular and tumor attributes were favorable for a multi-modality treatment strategy rather than circumferential dissection to remove this formidable tumor...
April 20, 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29685084/natural-history-of-sporadic-vestibular-schwannoma-a-volumetric-study-of-tumor-growth
#15
Katherine A Lees, Nicole M Tombers, Michael J Link, Colin L Driscoll, Brian A Neff, Jamie J Van Gompel, John I Lane, Christine M Lohse, Matthew L Carlson
Objective (1) Assess 3-dimensional volumetric growth of untreated sporadic vestibular schwannomas (VSs) in a large cohort of patients treated with conservative observation. (2) Compare volumetric and conventional linear diameter measurements for detecting tumor growth. Study Design Case series with chart review. Setting Tertiary skull base referral center. Subjects and Methods Patients with sporadic VS who elected initial conservative treatment with at least 2 serial magnetic resonance imaging (MRI) scans were included...
April 1, 2018: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29682030/maximum-surgical-blood-order-schedule-for-elective-neurosurgery-in-a-university-teaching-hospital-in-northern-thailand
#16
Ananchanok Saringcarinkul, Siriwan Chuasuwan
Context: Preoperative blood bank testing should optimize the trade-off between intraoperative transfusion delay and blood wastage. Aims: This study aims to develop a maximal surgical blood order schedule (MSBOS) for elective neurosurgery. Settings and Design: Prospective data in University Teaching Hospital, Northern Thailand. Subjects and Methods: Blood transfusion data were collected on all adult patients satisfying inclusion/exclusion criteria in 2015...
April 2018: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29659161/neurovascular-relations-of-the-trigeminal-nerve-in-asymptomatic-individuals-studied-with-high-resolution-three-dimensional-magnetic-resonance-imaging
#17
Fernando Ruiz-Juretschke, LaíN H González-Quarante, Roberto García-Leal, Vicente Martínez de Vega
Neurovascular compression (NVC) is considered the main cause of classic trigeminal neuralgia (TN) and may be surgically addressed with microvascular decompression (MVD). Preoperative high-resolution three-dimensional magnetic resonance has proven a reliable tool to diagnose NVC in patients with refractory TN undergoing MVD. However, there is still scarce data regarding the rate, degree, and characteristics of neurovascular compression in asymptomatic individuals. This article describes the vascular relations of the trigeminal nerve in the cerebellopontine angle (CPA) in 100 subjects without known TN studied with 3...
April 16, 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29656000/primary-central-nervous-system-lymphoma-at-the-cerebellopontine-angle-mimicking-a-trigeminal-schwannoma-a-unique-case-report-and-literature-review
#18
Vijay Seevaratnam, Yingda Li, Sun Loong Keegan Lee, Gemma Olsson
Primary central nervous system lymphoma (PCNSL) is an uncommon extranodal manifestation of non-Hodgkin's lymphoma with those presenting at the cerebellopontine angle (CPA) being rare presentations with limited reported cases in the literature. We report a 60-year old female presenting with PCNSL of the left CPA radiologically mimicking a trigeminal schwannoma with corresponding clinical signs. Imaging showed a left CPA lesion that was biopsied and confirmed as diffuse large B-cell lymphoma. Given its rarity, PCNSL should be considered in the differential diagnosis for all CPA tumours...
April 11, 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29625310/glioneuronal-heterotopia-presenting-as-a-cerebellopontine-angle-tumor-of-the-cranial-nerve-viii-case-report
#19
M Peris-Celda, C Giannini, F E Diehn, L J Eckel, B A Neff, J J Van Gompel
BACKGROUND: Vestibular schwannomas and meningiomas account for the great majority of lesions arising in the cerebellopontine angle (CPA). In this report, we present a case of glioneuronal heterotopia, also known as glioneuronal hamartoma, arising from the VIII cranial nerve, which is an extremely uncommon lesion. Important radiologic and surgical aspects are reviewed, which may help in early recognition and intraoperative decision making when these lesions are encountered. CASE DESCRIPTION: A healthy 29-year-old female presented with intermittent right facial numbness...
April 3, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29580017/unusual-appearance-of-trigemino-cardiac-reflex-during-cerebellopontine-angle-surgery
#20
Hamid Borghei-Razavi, Paramita Das, Marco Maurtua, Pablo F Recinos
No abstract text is available yet for this article.
April 2018: World Neurosurgery
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