22 results match your criteria Skull Base Tumors Other CPA Tumors

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Trigeminal Nerve Schwannoma of the Cerebellopontine Angle.

J Neurol Surg B Skull Base 2018 Dec 25;79(Suppl 5):S389-S390. Epub 2018 Sep 25.

Department of Neurologic Surgery, Mayo Clinic, Rochester, Minnesota, United States.

 Large and even moderate sized, extra-axial cerebellopontine angle (CPA) tumors may fill this restricted space and distort the regional anatomy. It may be difficult to determine even with high resolution magnetic resonance imaging (MRI) if the tumor is dural-based, or what the nerve of origin is if a schwannoma. While clinical history and exam are helpful, they are not unequivocal, particularly since many patients present with a myriad of symptoms, or conversely an incidental finding. Read More

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http://dx.doi.org/10.1055/s-0038-1669966DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240162PMC
December 2018
5 Reads

Continuous and Dynamic Facial Nerve Mapping During Surgery of Cerebellopontine Angle Tumors: Clinical Pilot Series.

World Neurosurg 2018 Nov 9;119:e855-e863. Epub 2018 Aug 9.

Department of Neurosurgery, Medical Faculty, Heinrich Heine University, Düsseldorf, Düsseldorf, Germany.

Objective: To evaluate a new surgical tool combining suction and monopolar neurostimulation (stimulation sucker) for cerebellopontine angle (CPA) tumors. The usefulness for continuous (time) and dynamic (space) facial nerve mapping was studied.

Methods: Patients operated on with the stimulation sucker for a CPA tumor between April 2016 and May 2017 in a tertiary care center were identified. Read More

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http://dx.doi.org/10.1016/j.wneu.2018.07.286DOI Listing
November 2018
16 Reads

Postoperative Cochlear Obliteration after Retrosigmoid Approach in Patients with Vestibular Schwannoma.

J Neurol Surg B Skull Base 2018 Aug 20;79(4):343-348. Epub 2017 Nov 20.

Department of Neurosurgery, Klinikum Fulda gAG, Academic Hospital of the University of Marburg, Fulda, Germany.

 Vestibular schwannomas (VSNs) account for the vast majority of lesions located in the cerebellopontine angle (CPA). The goals of VSN surgery are possible total tumor removal, intact facial nerve function, and preservation of cochlear nerve function. In cases of pre- or postoperative deafness, restoration of hearing with auditory brainstem implant (ABI) or cochlear implant (CI) is a promising treatment option with normally better results in CI than in ABI. Read More

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http://dx.doi.org/10.1055/s-0037-1608649DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6043167PMC
August 2018
17 Reads

Cystic Progression of a Cavernous Malformation at the Level of the Trigeminal Root Entry Zone Presenting With Sudden Onset of Trigeminal Neuralgia.

J Craniofac Surg 2018 Nov;29(8):e728-e730

Division of Neurosurgery, San Filippo Neri Hospital, ASL Rome, Rome, Italy.

Background: Cavernous malformations (CM) in the cerebellopontine angle (CPA) are rare, and most of them are solid and extend from the internal auditory canal into the CPA. In contrast, cystic CM arising in the CPA and not involving the internal auditory canal and dura of the skull base are extremely rare. The authors present an uncommon large cystic progression of a cavernous malformation at the level of the trigeminal root entry zone evolving to severe trigeminal neuralgia and brainstem compression. Read More

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http://Insights.ovid.com/crossref?an=00001665-900000000-9567
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http://dx.doi.org/10.1097/SCS.0000000000004501DOI Listing
November 2018
9 Reads

Lesions Mimicking Small Vestibular Schwannomas.

J Neurol Surg B Skull Base 2017 Dec 19;78(6):447-453. Epub 2017 Jul 19.

Department of Neuropathology, University of Würzburg, Würzburg, Germany.

 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. Read More

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http://dx.doi.org/10.1055/s-0037-1604160DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5680035PMC
December 2017
9 Reads

[A combination use of endoscope and microscope in cerebral pontine angle surgery].

Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017 Feb;52(2):85-88

Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Jiaotong University Ear Institute, Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai 200011, China.

To evaluate the application of combination use of microscope and endoscope in cerebral pontine angle (CPA) surgery. A total of 72 patients undergone lateral skull base surgeries via endoscope under microscopic control from January 2006 to January 2015 was reviewed respectively. The patients including 35 males and 37 females were composed of 22 cases of vestibular swannnomas, 45 cases of cranial neuropathy and 5 cases of CPA chelesteatoma. Read More

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http://dx.doi.org/10.3760/cma.j.issn.1673-0860.2017.02.002DOI Listing
February 2017
6 Reads

Stitchless fibrin glue-aided facial nerve grafting after cerebellopontine angle schwannoma removal: technique and results in 15 cases.

Otol Neurotol 2015 Mar;36(3):498-502

*Department of Otolaryngology, Agamenon Magalhães Hospital, Recife, Pernambuco, Brazil; †Department of Otolaryngology and Skull Base Surgery, and ‡Department of Neurosurgery, Pellegrin University Hospital, University Bordeaux Segalen, Bordeaux, France.

Aim Of The Study: To evaluate the results of facial nerve (FN) grafting using great auricular cable graft and fibrin glue without suturing to palliate FN disruption after removal of large cerebellopontine angle (CPA) vestibular schwannoma (VS) or facial nerve schwannoma (FNS). To assess whether tumor size and origin influenced the results.

Study Design And Setting: Retrospective review of all patients having undergone removal of FNS/VS and needing intraoperative FN repair between 2001 and 2011. Read More

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http://pdfs.journals.lww.com/otology-neurotology/2015/03000/
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http://dx.doi.org/10.1097/MAO.0000000000000408DOI Listing
March 2015
8 Reads

MRI without magnet removal in neurofibromatosis type 2 patients with cochlear and auditory brainstem implants.

Otol Neurotol 2014 Jun;35(5):821-5

*Otology and Skull Base Unit, †Cambridge Hearing Implant Program, ‡Department of Radiology, and §Department of Neurosurgery, Cambridge University Hospital, Cambridge, U.K.

Objective: To assess the impact on image quality of MRI without magnet removal in cochlear implant (CI) and auditory brainstem implant (ABI) users with neurofibromatosis type 2 (NF2).

Study Design: Prospective cohort.

Setting: Tertiary center for cochlear and auditory brainstem implantation. Read More

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http://pdfs.journals.lww.com/otology-neurotology/2014/06000/
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http://dx.doi.org/10.1097/MAO.0000000000000330DOI Listing
June 2014
18 Reads

Intracranial clear cell meningioma: a clinicopathologic study of 15 cases.

Acta Neurochir (Wien) 2011 Sep 4;153(9):1769-80. Epub 2011 Jun 4.

Department of Neuropathology, Huashan Hospital, Fudan University, Shanghai, China.

Object: Clear cell meningioma (CCM) is a rare histological variant of meningioma. CCM has a high recurrence rate and aggressiveness. In this study, we reviewed our experience in the treatment of the lesion. Read More

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http://dx.doi.org/10.1007/s00701-011-1052-zDOI Listing
September 2011
5 Reads

Intracranial lipomas affecting the cerebellopontine angle and internal auditory canal: a case series.

Otol Neurotol 2011 Jun;32(4):670-5

Department of Otology, Neurotology and Skull Base Surgery, Queen Elizabeth Hospital, University Hospital Birmingham, United Kingdom.

Objective: To assess the long-term outcome of lipomas affecting the cerebellopontine angle (CPA) and internal auditory canal (IAC).

Patients: This is a retrospective, single-center study of 10 CPA and IAC lipomas that have presented for the last 6 years. There were 8 male and 2 female patients whose age ranged from 22 to 71 years. Read More

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http://pdfs.journals.lww.com/otology-neurotology/2011/06000/
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http://dx.doi.org/10.1097/MAO.0b013e31821179e0DOI Listing
June 2011
3 Reads

Nonvestibular schwannoma tumors in the cerebellopontine angle: a structured approach and management guidelines.

Skull Base 2008 Jul;18(4):217-27

University Clinic of Neurosurgery, Copenhagen University Hospital, Copenhagen, Denmark.

The most common cerebellopontine angle (CPA) tumor is a vestibular schwannoma, but one in five CPA tumors are not vestibular schwannomas. These tumors may require different management strategies. Compared with vestibular schwannomas, symptoms and signs from cranial nerve VIII are less frequent: other cranial nerve and cerebellar symptoms and signs predominate in patients with these less common CPA tumors. Read More

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http://dx.doi.org/10.1055/s-2007-1016959DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2467479PMC
July 2008
6 Reads

Cochlear schwannomas.

Skull Base 2001 Nov;11(4):241-4

In a series of 179 cerebellopontine angle (CPA) tumors, the authors present nine cases (5%) that were cochlear nerve neuromas. There were six men and three women (mean age, 51 years). Preoperative magnetic resonance imaging confirmed the diagnosis in one case with a labyrinthine extension and raised suspicions in the other four cases, which were confirmed during surgery. Read More

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1656885PMC
November 2001
4 Reads

Management Strategy for Meningioma in Pregnancy: A Clinical Study.

Skull Base 2003 Nov;13(4):197-203

Department of Neurosciences, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia.

We retrospectively studied 18 pregnant women from 600 cases of meningioma treated at this Institution between 1986 and 2001. The variables evaluated included clinical presentation; radiological findings; timing and extent of surgical resection; and an overview of gestational, clinical, and surgical outcomes. Visual impairment was the chief complaint followed by headache and seizures. Read More

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http://dx.doi.org/10.1055/s-2004-817695DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1131852PMC
November 2003
5 Reads

Hemifacial spasm due to a tentorial paramedian meningioma: a case report.

Neurol Sci 2005 Apr;26(1):46-9

Neurologia-Neurofisiopatologia, Department of Neurosciences, Azienda Ospedaliera S. Maria della Misericordia, Piazzale S. Maria della Misericordia 15, I-33100, Udine, Italy.

Hemifacial spasm (HFS) is a movement disorder characterised by involuntary paroxysmal facial movements that usually involve the orbicularis oculi and then spread to the other facial muscles. A microvascular compression and demyelination of the seventh nerve at its exit from the brain stem is considered to be the main aetiology of HFS. In addition to rare idiopathic (cryptogenetic) cases, others causes of HFS exist: tumours or vascular malformations have been described, of both the ipsilateral and contralateral cerebellopontine angle (CPA). Read More

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http://link.springer.com/10.1007/s10072-005-0382-0
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http://dx.doi.org/10.1007/s10072-005-0382-0DOI Listing
April 2005
3 Reads

Audiologic presentation of cerebellopontine angle cholesteatoma.

J Otolaryngol 2003 Aug;32(4):217-21

Department of Otoneurological and Skull Base Surgery, Addenbrooke's Hospital, Cambridge, England.

Objective: The aim of this study was to examine the audiologic presentation of patients with cerebellopontine angle (CPA) cholesteatoma.

Design: Retrospective case review.

Setting: Neuro-otologic tertiary referral centre. Read More

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August 2003
5 Reads

Unusual lesions of the cerebellopontine angle: a segmental approach.

Radiographics 2001 Mar-Apr;21(2):419-38

Department of Neuroradiology, Hôpital J. Minjoz, Boulevard Fleming, 25000 Besançon, France.

Tumors of the cerebellopontine angle (CPA) are frequent; acoustic neuromas and meningiomas represent the great majority of such tumors. However, a large variety of unusual lesions can also be encountered in the CPA. The site of origin is the main factor in making a preoperative diagnosis for an unusual lesion of the CPA. Read More

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http://dx.doi.org/10.1148/radiographics.21.2.g01mr13419DOI Listing
July 2001
4 Reads

Unusual lesions of the internal auditory canal.

J Laryngol Otol 1998 Jul;112(7):650-3

Department of Otology/Skull Base Surgery, St Vincent's Hospital, Sydney, Australia.

Acoustic neuromata (AN) account for nearly 90 per cent of internal auditory canal (IAC) and cerebello-pontine angle (CPA) tumours. The second most common tumour is meningioma. Rare lesions include primary cholesteatoma, facial neuroma, lipoma, angioma and various cysts. Read More

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July 1998
4 Reads

Cerebellopontine angle lipoma: a rare differential diagnosis.

Skull Base Surg 1997 ;7(4):199-205

Intracranial lipomas in an infratentorial and extra-axial location are extremely rare. The presented case of an extensive lipoma of the cerebellopontine angle (CPA) represents 0.05% of all CPA tumors operated on in our department from 1978 to 1996. Read More

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1656654PMC
July 2011
5 Reads

Alteration of rCBF in skull base lesions.

Authors:
S Mirzai M Samii

Acta Neurol Scand Suppl 1996 ;166:155-60

Department of Neurosurgery, Nordstadt Hospital, Hannover Medical School, Germany.

Cerebral functional imaging methods provide complementary information on brain function and large vessels regulatory controls which are compromised in cranial base lesions. The presence of a skull base tumor can alter regional cerebral blood flow (rCBF) in adjacent and remote brain tissue. This report presents the results of 104 CBF studies in 66 patients with skull base lesions (aged 17-75 years). Read More

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August 1996
2 Reads

Neurophysiologic monitoring in posterior fossa surgery. I. Technical principles, applicability and limitations.

Acta Neurochir (Wien) 1989 ;98(1-2):9-18

Neurochirurgische Klinik, Universität Erlangen-Nürnberg, Federal Republic of Germany.

In 135 cases of posterior fossa surgery almost exclusively in the cerebellopontine angle (CPA) intraoperative monitoring of brain-stem acoustic evoked potentials (BAEP) and partly somatosensory evoked potentials (SEP) was performed. The series consisted of 20 microvascular decompressions, 63 acoustic neurinomas, 7 vascular lesions and 45 other space occupying lesions, mostly in the CPA. BAEP monitoring alone was employed in 76 cases, combined BAEP and SEP monitoring less frequently. Read More

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July 1989
4 Reads

A comparative study of brain-stem auditory evoked potentials and blink reflexes in posterior fossa tumor patients.

J Neurosurg 1988 Nov;69(5):660-8

Department of Neurosurgery, Aegean University Faculty of Medicine, Bornova, Izmir, Turkey.

Brain-stem auditory evoked potentials (BAEP's) and blink reflexes (BR's) were recorded from 40 patients with clinical and radiological evidence of posterior fossa tumors. They were examined in three groups according to the anatomical location of the lesion: Group A included 15 patients with midline tumors; Group B included 14 patients with cerebellar hemispheric tumors; and Group C included 11 patients with cerebellopontine angle (CPA) tumors. More of the 40 patients had BAEP abnormalities (32) than BR abnormalities (24). Read More

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http://dx.doi.org/10.3171/jns.1988.69.5.0660DOI Listing
November 1988
9 Reads

Non-auditory presentations of cerebellopontine angle lesions.

Laryngoscope 1984 Jul;94(7):904-6

Most patients with cerebellopontine angle (CPA) neoplasms present with asymmetric hearing loss and/or tinnitus. For this reason it is well accepted that patients with these symptoms deserve a detailed neurotologic evaluation. Non-auditory presentations of CPA neoplasms, on the other hand, are frequently handled in a more complacent manner which may delay diagnosis and, therefore, result in increased morbidity. Read More

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July 1984
5 Reads
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