1,129 results match your criteria Skull Base [Journal]


The Feasibility of a Modified Exclusive Endoscopic Transcanal Transpromontorial Approach for Vestibular Schwannomas.

J Neurol Surg B Skull Base 2019 Feb 30;80(1):82-87. Epub 2018 Jul 30.

Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea.

 We evaluated the feasibility of an exclusive endoscopic transcanal transpromontorial approach (EETTA) for the treatment of small vestibular schwannomas (VSs) limited to the internal auditory canal (IAC), and introduced a modification without external auditory canal closure.  Between June 2016 and June 2017, seven patients with VS underwent surgery using a modified EETTA. Treatment outcomes, including efficacy of tumor resection, preservation of function, operation time, and quality of life (QOL), were evaluated. Read More

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http://www.thieme-connect.de/DOI/DOI?10.1055/s-0038-1667061
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http://dx.doi.org/10.1055/s-0038-1667061DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6375732PMC
February 2019
2 Reads

Coding and Reimbursement for Endoscopic Endonasal Surgery of the Skull Base - Appendices.

J Neurol Surg B Skull Base 2019 Feb 6;80(Suppl 2):S255-S264. Epub 2019 Feb 6.

KarenZupko & Associates, Inc., Chicago, Illinois, United States, and the North American Skull Base Society Best Practices for Coding & Billing Task Force.

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http://dx.doi.org/10.1055/s-0039-1677683DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6365228PMC
February 2019

Coding and Reimbursement for Endoscopic Endonasal Surgery of the Skull Base.

J Neurol Surg B Skull Base 2019 Feb 6;80(Suppl 2):S247-S254. Epub 2019 Feb 6.

Department of Otolaryngology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States.

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http://dx.doi.org/10.1055/s-0039-1677682DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6365244PMC
February 2019

An Editorial on NASBS White Paper: Coding and Reimbursement for Endoscopic Endonasal Surgery of the Skull Base.

J Neurol Surg B Skull Base 2019 Feb 6;80(Suppl 2):S245-S246. Epub 2019 Feb 6.

Department of Otolaryngology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States.

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http://dx.doi.org/10.1055/s-0039-1677684DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6365229PMC
February 2019

Relapsing Long-Lasting Garcin Syndrome Revealing Skull Base Diffuse B Cell Lymphoma: The Diagnosis through the "Hartel's Route".

J Neurol Surg B Skull Base 2019 Feb 8;80(1):105-108. Epub 2018 Jun 8.

Department of NESMOS (Neurosciences Mental Health and Sensory Organs), School of Medicine and Psychology, "Sant'Andrea" Hospital, "Sapienza" University of Rome, Rome, Italy.

The Garcin syndrome is a rare condition characterized by multiple unilateral cranial nerve palsy, without neither long-tract involvement nor intracranial hypertension. Non-Hodgkin lymphoma is a systemic malignant disease that localizes in a minority of cases in the central nervous system. We report a case of Garcin syndrome that revealed a diffuse large B cell lymphoma (DLBCL) located in the skull base and in the right kidney. Read More

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http://dx.doi.org/10.1055/s-0038-1657794DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6365233PMC
February 2019
1 Read

Variation in Coding Practices for Vestibular Schwannoma Surgery.

Authors:
Kim Pollock

J Neurol Surg B Skull Base 2019 Feb 23;80(1):103-104. Epub 2019 Jan 23.

KarenZupko and Associates, Inc. Chicago, Illinois, United States.

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http://dx.doi.org/10.1055/s-0039-1677819DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6365231PMC
February 2019

Variation in Coding Practices for Vestibular Schwannoma Surgery.

J Neurol Surg B Skull Base 2019 Feb 16;80(1):96-102. Epub 2018 Jul 16.

Department of Neurosurgery, Center for Skull Base and Pituitary Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States.

 Nationwide databases are frequently used resources for assessing practice patterns and clinical outcomes. However, analyses based on billing codes may be limited by the inconsistent application of current procedural terminology (CPT) codes to specific operations. We investigated the variability among commonly used CPT codes for vestibular schwannomas resection and sought to identify factors that underlie this variation. Read More

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http://dx.doi.org/10.1055/s-0038-1667124DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6365234PMC
February 2019

Sinonasal Undifferentiated Carcinoma: A 15-Year Single Institution Experience.

J Neurol Surg B Skull Base 2019 Feb 16;80(1):88-95. Epub 2018 Aug 16.

Department of Otorhinolaryngology - Head and Neck Surgery, University of Pennsylvania, Philadelphia, Pennsylvania, United States.

 Sinonasal undifferentiated carcinoma (SNUC) is an aggressive neoplasm, with conflicting existing literature regarding prognosis and treatment due to the rarity of disease. Characterization of optimal SNUC management is necessary for improved outcomes.  Case series with planned data collection and analysis. Read More

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http://dx.doi.org/10.1055/s-0038-1668537DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6365239PMC
February 2019
2 Reads

Endoscope Image Capture System with Mirrorless Camera.

J Neurol Surg B Skull Base 2019 Feb 25;80(1):79-81. Epub 2018 Jul 25.

Department of Otolaryngology, University of California, San Francisco, California, United States.

Modern endoscopic surgery relies on capturing high fidelity images for a multitude of purposes. One method of capturing images involves incorporating infrared and 4 k resolution video in the image capture system. However, the price of such whole image capture systems remains expensive and potentially cost prohibitive for some practitioners. Read More

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http://dx.doi.org/10.1055/s-0038-1667003DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6365235PMC
February 2019

Mathematical Models for Tumor Growth and the Reduction of Overtreatment.

J Neurol Surg B Skull Base 2019 Feb 23;80(1):72-78. Epub 2018 Jul 23.

Department of Otorhinolaryngology, Leiden University Medical Center, Leiden, The Netherlands.

 To improve our understanding of the natural course of head and neck paragangliomas (HNPGL) and ultimately differentiate between cases that benefit from early treatment and those that are best left untreated, we studied the growth dynamics of 77 HNPGL managed with primary observation.  Using digitally available magnetic resonance images, tumor volume was estimated at three time points. Subsequently, nonlinear least squares regression was used to fit seven mathematical models to the observed growth data. Read More

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http://dx.doi.org/10.1055/s-0038-1667148DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6365230PMC
February 2019

Skull Base 3D Modeling of Rigid Buttress for Gasket-Seal Closure Using Operative Endoscopic Imaging: Cadaveric Feasibility.

J Neurol Surg B Skull Base 2019 Feb 20;80(1):67-71. Epub 2018 Jul 20.

Department of Radiology, Weill Cornell Medicine, Cornell University, New York, New York, United States.

Surgical defect closure following endonasal transsphenoidal tumor resection is a critical component of procedural success. Three-dimensional (3D) modeling of relevant skull base anatomy during resection can potentially facilitate design of a custom rigid buttress for gasket-seal closure; however, access to conventional cross-sectional imaging intraoperatively is limited and cumbersome. Endoscopic imaging, by contrast, is always available. Read More

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http://dx.doi.org/10.1055/s-0038-1667023DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6365293PMC
February 2019

Risk of Developing Postoperative Deficits Based on Tumor Location after Surgical Resection of an Intracranial Meningioma.

J Neurol Surg B Skull Base 2019 Feb 17;80(1):59-66. Epub 2018 Jul 17.

Department of Neurosurgery, Mayo Clinic Florida, Jacksonville, Florida, United States.

 Meningiomas occur in various intracranial locations. Each location is associated with a unique set of surgical nuances and risk profiles. The incidence and risk factors that predispose patients to certain deficits based on tumor locations are unclear. Read More

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http://www.thieme-connect.de/DOI/DOI?10.1055/s-0038-1667066
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http://dx.doi.org/10.1055/s-0038-1667066DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6365240PMC
February 2019
4 Reads

Biphenotypic Sinonasal Sarcoma-Case Report and Review of Clinicopathological Features and Diagnostic Modalities.

J Neurol Surg B Skull Base 2019 Feb 16;80(1):51-58. Epub 2018 Jul 16.

Division of Rhinology and Endoscopic Skull Base Surgery, Department of Otolaryngology - Head and Neck Surgery, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, United States.

 Biphenotypic sinonasal sarcoma is a recently described malignancy showing dual differentiation with both myogenic and neural elements. Due to its histologic similarities to other sinonasal malignancies, it is a diagnostic challenge.  The main purpose of this article is to report a case of biphenotypic sinonasal sarcoma and to consolidate data and provide a comprehensive review regarding pathological differences between biphenotypic sarcoma and other sinonasal malignancies and diagnostic modalities used for biphenotypic sarcoma. Read More

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http://dx.doi.org/10.1055/s-0038-1667146DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6365237PMC
February 2019

Revascularization of AlloDerm Used during Endoscopic Skull Base Surgery.

J Neurol Surg B Skull Base 2019 Feb 6;80(1):46-50. Epub 2018 Jul 6.

Department of Otolaryngology - Head and Neck Surgery, NYU Langone Medical Center, New York, United States.

 AlloDerm is an acellular dermal matrix often used for reconstruction throughout the body. AlloDerm has been shown to undergo revascularization when used to reconstruct soft tissue such as in abdominal wall reconstruction. In this study, the authors review the literature on revascularization of AlloDerm and demonstrate the histologic findings of AlloDerm after implantation during skull base reconstruction. Read More

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http://dx.doi.org/10.1055/s-0038-1666851DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6365292PMC
February 2019

Chances of Improvement in Cases of Vestibular Schwannoma Presenting with Facial Nerve Weakness: Presentation of Two Cases and Literature Review.

J Neurol Surg B Skull Base 2019 Feb 3;80(1):40-45. Epub 2018 Jul 3.

Department of Neurosurgery, Brüder Krankenhaus Trier, Trier, Germany.

 Facial nerve (FN) weakness as a presenting feature in vestibular schwannoma (VS) is extremely rare. We are presenting two different cases of VS with significant facial weakness and reviewed the literature for similar cases.  We are presenting two cases of VS with significant facial weakness. Read More

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http://dx.doi.org/10.1055/s-0038-1661414DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6365238PMC
February 2019

Revision Microvascular Decompression for Trigeminal Neuralgia and Hemifacial Spasm: Factors Associated with Surgical Failure.

J Neurol Surg B Skull Base 2019 Feb 29;80(1):31-39. Epub 2018 Jun 29.

Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California, United Sates.

 To investigate risk factors for symptom recurrence in patients requiring a revision microvascular decompression (MVD) for trigeminal neuralgia (TN) or hemifacial spasm (HFS).  Retrospective review of a prospectively maintained database.  Seventeen consecutive patients undergoing revision MVD at our institution between January 1993 and September 2017. Read More

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http://dx.doi.org/10.1055/s-0038-1661348DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6365246PMC
February 2019

Biomechanical Comparison of the Temporalis Muscle Fascia, the Fascia Lata, and the Dura Mater.

J Neurol Surg B Skull Base 2019 Feb 19;80(1):23-30. Epub 2018 Jun 19.

Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Center Zagreb, Zagreb, Croatia.

The purpose of our research is to prove that elastic biomechanical characteristics of the temporalis muscle fascia are comparable to those of the fascia lata, which makes the temporalis muscle fascia adequate material for dural reconstruction in the region of the anterior cranial fossa. Fifteen fresh human cadavers, with age range from 33 to 83 years (median age: 64 years; mean age: 64.28 years), were included in the biomechanical study. Read More

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http://dx.doi.org/10.1055/s-0038-1661349DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6365232PMC
February 2019
1 Read

CXCR4 and PD-1 Expression in Head and Neck Cancer with Perineural Spread.

J Neurol Surg B Skull Base 2019 Feb 14;80(1):18-22. Epub 2018 Jun 14.

School of Medicine, University of Queensland, Brisbane, Queensland, Australia.

 Perineural spread (PNS) is a marker of aggressiveness and has been shown to occur in cranial nerves due to advanced mucosal and cutaneous head and neck cancer. Receptors CXC chemokine receptor 4 (CXCR4) and programmed cell death-1 (PD-1) have been shown to be overexpressed in a variety of cancers with PNS, with the inhibition of these pathways offering a potential future treatment.  Retrospective immunohistochemical staining for the CXCR4 and PD-1 receptors was performed on 28 head and neck specimens that demonstrated PNS from January 2017 to August 2017, at Royal Brisbane and Women's Hospital, Brisbane, Australia. Read More

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http://www.thieme-connect.de/DOI/DOI?10.1055/s-0038-1660846
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http://dx.doi.org/10.1055/s-0038-1660846DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6365291PMC
February 2019
2 Reads

Proposal for Modification of Cahan's Criteria Utilizing Molecular Genetic Analyses for Cases without Baseline Histopathology: A Unique Method Applicable to Primary Radiosurgery.

J Neurol Surg B Skull Base 2019 Feb 31;80(1):10-17. Epub 2018 May 31.

Department of Otolaryngology-Head and Neck Surgery, Mayo Clinic, Rochester, Minnesota, United States.

 Cahan's criteria have been utilized since 1948 to establish causality between prior radiation treatment and the development of secondary malignancy. One major criterion specifies that histological and radiographic evidence collected before and after radiation treatment must confirm separate tumor types; however, pretreatment biopsy is rarely obtained prior to radiosurgery for vestibular schwannoma and many other skull base and cranial lesions. Therefore, in these cases Cahan's criteria cannot be validly applied. Read More

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http://dx.doi.org/10.1055/s-0038-1655759DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6365249PMC
February 2019
1 Read

Surgical Outcomes, Complications, and Management Strategies for Foramen Magnum Meningiomas.

J Neurol Surg B Skull Base 2019 Feb 28;80(1):1-9. Epub 2018 May 28.

Department of Neurological Surgery, University of California, San Francisco, California, United States.

 Foramen magnum meningiomas (FMM) are complex lesions because of their proximity to the brain stem and posterior cerebrovasculature. The objective of this study is to report surgical outcomes and complications after resection of FMM.  A retrospective chart review was conducted on patients with FMM from 1998 to 2015. Read More

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http://dx.doi.org/10.1055/s-0038-1654702DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6365236PMC
February 2019
1 Read

Erratum: Endoscopic Endonasal Transtuberculum Sellae Approach for the Resection of Suprasellar Epidermoid Cyst.

J Neurol Surg B Skull Base 2018 Apr 18;79(Suppl 3):e1. Epub 2018 Jun 18.

Department of Neurological Surgery, Wexner Medical Center, The Ohio State University, Columbus, Ohio, United States.

[This corrects the article DOI: 10.1055/s-0038-1624590.]. Read More

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http://dx.doi.org/10.1055/s-0038-1660866DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6331293PMC
April 2018
1 Read

Microsurgical Decompression of Trigeminal Neuralgia Caused by Simultaneous Double Arterial (SCA and AICA) and Petrosal Vein Complex Compression.

J Neurol Surg B Skull Base 2018 Dec 25;79(Suppl 5):S428-S430. Epub 2018 Sep 25.

Semmes Murphey Neurologic and Spine Institute, Memphis, Tennessee, United States.

Trigeminal neuralgia is a chronic pain disorder affecting the face. In approximately 80% of cases, it is most commonly caused, when the root entry zone (REZ) of the trigeminal nerve is compressed by the superior cerebellar artery (SCA). The etiology of the remaining 20% of cases is distributed among venous, arteriovenous malformations, posterior fossa tumors, multiple sclerosis plaque compressions, and other pathologies. Read More

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http://www.thieme-connect.de/DOI/DOI?10.1055/s-0038-1669968
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http://dx.doi.org/10.1055/s-0038-1669968DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6243231PMC
December 2018
8 Reads

Microsurgical Gross Total Resection of a WHO Grade II Cerebellopontine Angle Ependymoma in an Adult.

J Neurol Surg B Skull Base 2018 Dec 25;79(Suppl 5):S426-S427. Epub 2018 Sep 25.

Department of Neurological Surgery, University of Wisconsin Medical School, Madison, Wisconsin, United States.

Infratentorial ependymomas that arise in the fourth ventricle and extend into the cerebellopontine angle (CPA) through the foramina of Luschka are well described. However, a primary CPA location of an ependymoma is distinctly uncommon. In this video, we present a 46-year-old man with episodes of dizziness, left-sided tinnitus, imbalance, double vision, and nausea. Read More

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http://www.thieme-connect.de/DOI/DOI?10.1055/s-0038-1669969
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http://dx.doi.org/10.1055/s-0038-1669969DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6243230PMC
December 2018
11 Reads

Retrosigmoid Transmeatal Endoscope-Assisted Approach in Semi-Sitting Position for Resection of Vestibular Schwannoma: 2-D operative Video.

J Neurol Surg B Skull Base 2018 Dec 9;79(Suppl 5):S385-S386. Epub 2018 Oct 9.

Department of Neurological Surgery, Eberhard-Karls University, University Hospital Tübingen, Tübingen, Germany.

We present a case of a mid-sized vestibular schwannoma (T3b according to the Hannover classification) that was resected through a retrosigmoid transmeatal approach in semi-sitting position under endoscopic assistance. The patient is a 52-year-old male with acute loss of functional hearing on the right side. Audiometry confirmed a loss of up to 60 dB and lost speech discrimination, there were no associated symptoms such as tinnitus or vertigo. Read More

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http://www.thieme-connect.de/DOI/DOI?10.1055/s-0038-1669985
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http://dx.doi.org/10.1055/s-0038-1669985DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240135PMC
December 2018
9 Reads

Cerebellopontine Angle Lesions (Part 1).

Authors:
James K Liu

J Neurol Surg B Skull Base 2018 Dec 16;79(Suppl 5):S383-S384. Epub 2018 Nov 16.

Department of Neurological Surgery, Rutgers Neurological Institute of New Jersey, Rutgers University-New Jersey Medical School, Newark, New Jersey, United States.

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http://dx.doi.org/10.1055/s-0038-1675818DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240062PMC
December 2018
2 Reads

Gross Total Resection of a Jugular Foramen Thyroid Medullary Metastasis via a Transjugular Transsigmoid Approach.

J Neurol Surg B Skull Base 2018 Dec 25;79(Suppl 5):S424-S425. Epub 2018 Sep 25.

Department of Neurological Surgery, University of Wisconsin Medical School, Madison, Wisconsin, United States.

Surgical resection of jugular foramen tumors poses a significant challenge to skull base surgeons with the selection of an appropriate surgical approach, a matter of some debate. Jugular foramen metastatic tumors may mimic paragangliomas, and in some selected cases surgical resection is needed. In this video, we demonstrate the microsurgical gross total resection of a jugular foramen tumor via a postauricular trans-jugular trans-sigmoid approach. Read More

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http://dx.doi.org/10.1055/s-0038-1669970DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240456PMC
December 2018
12 Reads

A Rare Complication of Endovascular Embolization: Extruded Onyx on Trigeminal Nerve.

J Neurol Surg B Skull Base 2018 Dec 25;79(Suppl 5):S422-S423. Epub 2018 Sep 25.

Department of Neurological Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States.

 To demonstrate a rare complication of endovascular tumor embolization with onyx.  Operative video.  Department of neurological surgery in a university hospital. Read More

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http://dx.doi.org/10.1055/s-0038-1669972DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240439PMC
December 2018
9 Reads

Retrosigmoid Approach for Resection of Cerebellar Peduncle Cavernoma.

J Neurol Surg B Skull Base 2018 Dec 25;79(Suppl 5):S420-S421. Epub 2018 Sep 25.

Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah, United States.

The case described in this video involved a 38-year-old man, who presented with a 4-week history of worsening acute-onset headache, nausea, double vision, and vertigo. On examination, he had impaired tandem gait and diplopia on right horizontal gaze. A computed tomography (CT) scan revealed a hyperdense lesion of the right cerebellopontine angle. Read More

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http://dx.doi.org/10.1055/s-0038-1669974DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240428PMC
December 2018
9 Reads

Extended Retrosigmoid Approach for the Resection of a Pontomedullary Junction Cavernous Malformation.

J Neurol Surg B Skull Base 2018 Dec 25;79(Suppl 5):S418-S419. Epub 2018 Sep 25.

Department of Neurosurgery, University of Tennessee, Memphis, Tennessee, United States.

 To describe an extended retrosigmoid approach for the resection of a cavernoma involving the ponto-medullary junction, with emphasis on the microsurgical anatomy and technique.  A retrosigmoid craniotomy is performed in the lateral decubitus position and the sigmoid sinus exposed. After opening the dura, sutures are placed medial to the sinus to allow its gentle mobilization. Read More

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http://dx.doi.org/10.1055/s-0038-1669979DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240420PMC
December 2018
15 Reads

Extreme Lateral Supracerebellar Infratentorial Approach to the Lateral Midbrain.

J Neurol Surg B Skull Base 2018 Dec 25;79(Suppl 5):S415-S417. Epub 2018 Sep 25.

Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah, United States.

This video illustrates the case of a 52-year-old man with a history of multiple bleeds from a lateral midbrain cerebral cavernous malformation, who presented with sudden-onset headache, gait instability, and left-sided motor and sensory disturbances. This lesion was eccentric to the right side and was located in the dorsolateral brainstem. Therefore, the lesion was approached via a right-sided extreme lateral supracerebellar infratentorial (exSCIT) craniotomy with monitoring of the cranial nerves. Read More

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http://dx.doi.org/10.1055/s-0038-1669981DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240419PMC
December 2018
3 Reads

Endoscopic Assisted Retrosigmoid Approach for Cerebellopontine Angle Epidermoid Tumor.

J Neurol Surg B Skull Base 2018 Dec 25;79(Suppl 5):S413-S414. Epub 2018 Sep 25.

Department of Neurosurgery, University of Colorado, Aurora, Colorado, United States.

This case is a 20-year-old male, who presented with 1 month of right facial weakness (HB4) and complaints of ipsilateral eye dryness. He was initially treated for Bell's palsy with steroids and antiviral agents, but subsequently developed diplopia with right lateral gaze and underwent an MRI (magnetic resonance imaging). MRI demonstrated a 4. Read More

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http://www.thieme-connect.de/DOI/DOI?10.1055/s-0038-1669978
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http://dx.doi.org/10.1055/s-0038-1669978DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240417PMC
December 2018
16 Reads

Retrosigmoid Craniotomy for Resection of an Epidermoid Cyst of the Posterior Fossa.

J Neurol Surg B Skull Base 2018 Dec 25;79(Suppl 5):S411-S412. Epub 2018 Sep 25.

Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah, United States.

This video illustrates the case of a 51-year-old woman who presented with sudden-onset headache, vertigo, and nausea. Imaging revealed an epidermoid cyst of the posterior fossa with mass effect upon the brainstem and displacement of the basilar artery. This lesion was approached using a left-sided keyhole retrosigmoid craniotomy with monitoring of the cranial nerves. Read More

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http://dx.doi.org/10.1055/s-0038-1669980DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240416PMC
December 2018
2 Reads

Endoscope-Assisted Retrosigmoid Approach for Cerebellopontine Angle Epidermoid Tumor.

J Neurol Surg B Skull Base 2018 Dec 16;79(Suppl 5):S409-S410. Epub 2018 Oct 16.

Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, United States.

 Surgical resection is the only effective treatment modality for epidermoid tumors. Complete resection with preservation of neurological function must be pursued whenever possible, because it offers a cure for patients. However, the inability to identify hidden remnants, interdigitating around cranial nerves, especially in larger tumors, may be a contributing factor for incomplete resection. Read More

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http://www.thieme-connect.de/DOI/DOI?10.1055/s-0038-1669983
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http://dx.doi.org/10.1055/s-0038-1669983DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240415PMC
December 2018
9 Reads

Retrosigmoid Approach for Resection of Cerebellopontine Angle Meningioma.

J Neurol Surg B Skull Base 2018 Dec 25;79(Suppl 5):S407-S408. Epub 2018 Sep 25.

Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah, United States.

This video depicts the case of an 81-year-old man who presented with a 3-month history of left-sided facial numbness and gait imbalance. On examination, he had gait ataxia and decreased left facial sensation in the V2 and V3 distribution. Magnetic resonance imaging (MRI) revealed a large homogenously enhancing lesion arising from the inferior surface of the tentorium toward the left cerebellopontine angle causing significant brainstem compression ( Fig. Read More

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http://www.thieme-connect.de/DOI/DOI?10.1055/s-0038-1669975
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http://dx.doi.org/10.1055/s-0038-1669975DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240412PMC
December 2018
16 Reads

Trochlear Nerve Repair during Retrosigmoid Suprameatal Approach for Petrotentorial Meningioma: Operative Video.

J Neurol Surg B Skull Base 2018 Dec 1;79(Suppl 5):S404-S406. Epub 2018 Oct 1.

Department of Neurosurgery, Tokyo Medical University, Tokyo, Japan.

When operating on difficult skull base lesions, it is essential to be able to handle unexpected intraoperative findings or troubles, while achieving maximal lesion removal and minimal functional deficit. This video demonstrates a case of trochlear nerve repair that was performed during the retrosigmoid suprameatal approach for treatment of a petrotentorial meningioma, extending into the Meckel's cave. The patient is a 47-year-old woman with a right petrotentorial meningioma, extending into the Meckel's cave. Read More

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http://www.thieme-connect.de/DOI/DOI?10.1055/s-0038-1669967
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http://dx.doi.org/10.1055/s-0038-1669967DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240355PMC
December 2018
7 Reads

Combined Presigmoid and Retrosigmoid Approach to Petroclival Meningiomas.

J Neurol Surg B Skull Base 2018 Dec 25;79(Suppl 5):S402-S403. Epub 2018 Sep 25.

Department of Neurosurgery, Evangelic University Hospital of Curitiba, Parana, Brazil.

 The management of petroclival meningiomas is among the most intimidating in neurosurgery, due to its difficult accessibility and close relationship with vital structures; therefore, an appropriate exposure is mandatory. We present a surgical video demonstrating a presigmoid transtentorial approach, associated with the opening of the retrosigmoid dura to a petroclival meningioma, performed by the senior surgeon (L.A. Read More

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http://www.thieme-connect.de/DOI/DOI?10.1055/s-0038-1669965
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http://dx.doi.org/10.1055/s-0038-1669965DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240352PMC
December 2018
10 Reads

Gross Total Resection of Large Cerebellopontine Angle Meningioma with a Supratentorial Extension via Retrosigmoid Approach with Suprameatal Drilling and Tentorial Sectioning.

J Neurol Surg B Skull Base 2018 Dec 25;79(Suppl 5):S399-S401. Epub 2018 Sep 25.

Department of Neurological Surgery, University of Wisconsin Medical School, Madison, Wisconsin, United States.

Meningiomas are the second most common neoplasm in the cerebellopontine angle (CPA), and are challenging lesions to treat surgically. With significant refinements in surgical techniques, operative morbidity, and mortality have been substantially reduced. Total or near-total surgical resection can be accomplished in the majority of cases via appropriately selected approaches, and with acceptable morbidity. Read More

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http://dx.doi.org/10.1055/s-0038-1669973DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240348PMC
December 2018
3 Reads

Suboccipital Lateral Approach for Resection of Cerebellopontine Angle Meningioma: Operative Video and Technical Nuances.

J Neurol Surg B Skull Base 2018 Dec 9;79(Suppl 5):S397-S398. Epub 2018 Oct 9.

Department of Neurosurgery, Hospital Beneficência Portuguesa de São Paulo, Institute of Neurological Science of São Paulo, Bela Vista, São Paulo, Brasil.

We present the case of a 34-year-old woman, who presented to our department with a 4 months history of dizziness, hearing loss, and tinnitus on the right side. MRI (magnetic resonance imaging) scan demonstrated a large extra-axial lesion, suggestive of a meningioma, with dural attachments to the petrosal bone surface and tentorium, closely related with the trigeminal, abducens, facial, vestibulocochlear, and lower cranial nerves in the right side. Treatment options were discussed with the patient, and surgical resection was selected to remove the lesion, and decompress the cranial nerves and brainstem. Read More

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http://dx.doi.org/10.1055/s-0038-1669982DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240344PMC
December 2018
2 Reads

Resection of a Petroclival Meningioma via the Endoscope-Assisted Retrosigmoid Approach: 2-D Operative Video.

J Neurol Surg B Skull Base 2018 Dec 1;79(Suppl 5):S395-S396. Epub 2018 Oct 1.

Department of Neurological Surgery, Eberhard-Karls University, University Hospital Tübingen, Tübingen, Germany.

We present a case of a petroclival meningioma that was resected through an endoscope-assisted retrosigmoid approach via corridors above and below the facial-vestibulocochlear nerve complex. The patient is a 61-year-old female with complaints of left-sided hypesthesia and neuralgia of the infraorbital and zygomatic region, intermittent periorbital myokymia, and a slight facial palsy (HB II). This 2D video demonstrates the operative technique, anatomical and surgical nuances of the skull base approach and microdissection of the tumor from the critical neurovascular structures. Read More

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http://dx.doi.org/10.1055/s-0038-1669984DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240343PMC
December 2018
3 Reads

Retrosigmoid Approach to the Posterior Fossa Trigeminal Schwannoma.

J Neurol Surg B Skull Base 2018 Dec 25;79(Suppl 5):S393-S394. Epub 2018 Sep 25.

Department of Neurosurgery, University of Colorado, Aurora, Colorado, United States.

We present a case of a posterior fossa trigeminal schwannoma in a 31-year-old gentleman. Preoperative symptomatology included headaches and dizziness of 6 months in duration. Trigeminal schwannomas isolated to the posterior fossa, not extending into Meckel's Cave, may be adequately resected via a retrosigmoid approach. Read More

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http://dx.doi.org/10.1055/s-0038-1669976DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240336PMC
December 2018
12 Reads

Presigmoid Approach to Dumbbell Trigeminal Schwannoma.

J Neurol Surg B Skull Base 2018 Dec 25;79(Suppl 5):S391-S392. Epub 2018 Sep 25.

Department of Neurosurgery, University of Colorado Hospital, Aurora, Colorado, United States.

This case is a 15-year-old male, presenting with headaches, right face, and arm numbness, and ataxia. MRI (magnetic resonance imaging) revealed a large right sided dumbbell shaped lesion, extending into the middle and posterior fossa with compression of the brainstem consistent with a trigeminal schwannoma. Treatment options here would be a retrosigmoid suprameatal approach or a lateral presigmoid approach. Read More

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http://dx.doi.org/10.1055/s-0038-1669977DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240166PMC
December 2018
12 Reads

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

Microsurgical Gross Total Resection of a Large Residual/Recurrent Vestibular Schwannoma via Translabyrinthine Approach.

J Neurol Surg B Skull Base 2018 Dec 25;79(Suppl 5):S387-S388. Epub 2018 Sep 25.

Department of Neurological Surgery, University of Wisconsin Medical School, Madison, Wisconsin, United States.

Although, gross total resection in large vestibular schwannomas is an ideal goal, subtotal resection is frequently performed due to lack of expertise, concerns for facial palsy, or overuse of stereotactic radiation. In this video, we present a 31-year-old man with a 7-year history of tinnitus, dizziness, and hearing loss. The patient had a subtotal resection of a 2. Read More

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http://www.thieme-connect.de/DOI/DOI?10.1055/s-0038-1669971
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http://dx.doi.org/10.1055/s-0038-1669971DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6240157PMC
December 2018
18 Reads

Skull Base Dural Thickness and Relationship to Demographic Features: A Postmortem Study and Literature Review.

J Neurol Surg B Skull Base 2018 Dec 5;79(6):614-620. Epub 2018 Jun 5.

Department of Neurosurgery, University of Iowa Hospitals and Clinics, Iowa City, Iowa, United States.

Dural membrane is an important anatomic structure that surrounds and protects the entire central nervous system. Physical properties of the dura have many pathophysiological and therapeutic implications in cranial surgery, especially skull base disorders. The aim of this study is to investigate variation in skull base dural thickness and correlation with different demographic parameters. Read More

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http://www.thieme-connect.de/DOI/DOI?10.1055/s-0038-1651501
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http://dx.doi.org/10.1055/s-0038-1651501DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6239876PMC
December 2018
9 Reads

Swallowing Dysfunction in Adult Patients with Chiari I Malformation.

J Neurol Surg B Skull Base 2018 Dec 25;79(6):606-613. Epub 2018 May 25.

Department of Neurosurgery, Sahlgrenska University Hospital and Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.

 Swallowing difficulties have been reported in patients with Chiari I malformation (CMI) with a prevalence of 4 to 47%, but existing evidence is based only on case reports. We aimed to prospectively study swallowing function in adult patients with CMI before and 3 months after surgical decompression.  We included all adult patients diagnosed with CMI from September 2015 to October 2017 who underwent a planned surgery at Sahlgrenska University Hospital, Sweden. Read More

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http://dx.doi.org/10.1055/s-0038-1655758DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6239883PMC
December 2018
6 Reads

Red Blood Cell Transfusions Following Resection of Skull Base Meningiomas: Risk Factors and Clinical Outcomes.

J Neurol Surg B Skull Base 2018 Dec 14;79(6):599-605. Epub 2018 May 14.

Department of Neurosurgery, Ronald Reagan UCLA Medical Center, Los Angeles, California, United States.

 This article identifies risk factors for and investigates clinical outcomes of postoperative red blood cell transfusion in patients with skull base meningiomas.  Retrospective cohort study.  Single academic medical center. Read More

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http://dx.doi.org/10.1055/s-0038-1651502DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6239878PMC
December 2018
10 Reads

Comparison of Constructive Interference in Steady-State and T1-Weighted MRI Sequence at Detecting Pituitary Adenomas in Cushing's Disease Patients.

J Neurol Surg B Skull Base 2018 Dec 10;79(6):593-598. Epub 2018 May 10.

Department of Neurosurgery, Neurological Institute, Cleveland Clinic, Cleveland, Ohio, United States.

 T1-weighted magnetic resonance imaging (MRI) remains the standard pituitary imaging sequence. However, up to 50% of pituitary adenomas are missed with standard imaging in Cushing's disease (CD) patients. Utility of other imaging sequences needs be explored. Read More

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http://dx.doi.org/10.1055/s-0038-1642032DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6239881PMC
December 2018
17 Reads

Natural History, Multimodal Management, and Quality of Life Outcomes of Trigeminal Schwannomas.

J Neurol Surg B Skull Base 2018 Dec 10;79(6):586-592. Epub 2018 May 10.

Department of Surgery, Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada.

 Trigeminal schwannomas are the second most common among intracranial schwannomas. These can arise from anywhere between the root and the distal extracranial branches of the trigeminal nerve. Clinical presentation depends on location and size, including but not limited to facial hypesthesia or pain, headaches, dizziness, ataxia, and diplopia. Read More

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http://www.thieme-connect.de/DOI/DOI?10.1055/s-0038-1651503
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http://dx.doi.org/10.1055/s-0038-1651503DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6239870PMC
December 2018
5 Reads

Toxicity of Gamma Knife Radiosurgery May Be Greater in Patients with Lower Cranial Nerve Schwannomas.

J Neurol Surg B Skull Base 2018 Dec 10;79(6):580-585. Epub 2018 May 10.

Department of Radiation Oncology, University of Pennsylvania, Philadelphia, Pennsylvania, United States.

 Gamma Knife stereotactic radiosurgery (GK-SRS) is a preferred treatment option for tumors of the jugular foramen. We hypothesized that GK-SRS toxicity is higher for lower cranial nerve schwannomas than for glomus jugulare tumors despite anatomically similar locations.  We performed a retrospective review of all patients who received GK-SRS for glomus jugulare tumors and lower cranial nerve schwannomas at our institution between 2006 and 2014. Read More

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http://dx.doi.org/10.1055/s-0038-1651504DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6239879PMC
December 2018

Pediatric Endoscopic Endonasal Approaches for Skull Base Lesions in the Very Young: Is It Safe and Effective?

J Neurol Surg B Skull Base 2018 Dec 30;79(6):574-579. Epub 2018 Apr 30.

Department of Neurosurgery, University of California San Diego, San Diego, California, United States.

 The fully endoscopic expanded endonasal approach (EEA) has been shown to be safe and efficacious in pediatric patients. However, in the very young patient (ages six and under), the anatomical challenge of working through a small nasal corridor is problematic. The ability to repair the skull base and use a nasoseptal flap (NSF) has also been called into question. Read More

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http://dx.doi.org/10.1055/s-0038-1645854DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6239880PMC
December 2018
2 Reads