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Endoscopic skull base

Juan Luis Gómez-Amador, Luis Alberto Ortega-Porcayo, Isaac Jair Palacios-Ortíz, Alexander Perdomo-Pantoja, Felipe Eduardo Nares-López, Alfredo Vega-Alarcón
Brainstem cavernous malformations are challenging due to the critical anatomy and potential surgical risks. Anterolateral, lateral, and dorsal surgical approaches provide limited ventral exposure of the brainstem. The authors present a case of a midline ventral pontine cavernous malformation resected through an endoscopic endonasal transclival approach based on minimal brainstem transection, negligible cranial nerve manipulation, and a straightforward trajectory. Technical and reconstruction technique advances in endoscopic endonasal skull base surgery provide a direct, safe, and effective corridor to the brainstem...
October 21, 2016: Journal of Neurosurgery
Nathan T Zwagerman, Georgios Zenonos, Stefan Lieber, Wei-Hsin Wang, Eric W Wang, Juan C Fernandez-Miranda, Carl H Snyderman, Paul A Gardner
The endoscopic endonasal approach (EEA) has significantly evolved since its initial uses in pituitary and sinonasal surgery. The literature is filled with reports and case series demonstrating efficacy and advantages for the entire ventral skull base. With competence in 'minimally invasive' parasellar approaches, larger and more complex approaches were developed to utilize the endonasal corridor to create maximally invasive endoscopic skull base procedures. The challenges of these more complex endoscopic procedures include a long learning curve and navigating in a narrow corridor; reconstruction of defects presented new challenges and early experience revealed a significantly higher risk of cerebrospinal fluid leak...
October 20, 2016: Journal of Neuro-oncology
S Chawla, J Bowman, M Gandhi, B Panizza
BACKGROUND: The skull base is a highly complex anatomical region that provides passage for important nerves and vessels as they course into and out of the cranial cavity. Key to the management of pathology in this region is a thorough understanding of the anatomy, with its variations, and the relationship of various neurovascular structures to the pathology in question. Targeted high-resolution magnetic resonance imaging on high field strength magnets can enable the skull base surgeon to understand this intricate relationship and deal with the pathology from a position of relative advantage...
October 20, 2016: Journal of Laryngology and Otology
Abib Agbetoba, Amber Luong, Jin Keat Siow, Brent Senior, Claudio Callejas, Kornel Szczygielski, Martin J Citardi
BACKGROUND: Endoscopic sinus surgery represents a cornerstone in the professional development of otorhinolaryngology trainees. Mastery of these surgical skills requires an understanding of paranasal sinus and skull-base anatomy. The frontal sinus is associated with a wide range of variation and complex anatomical configuration, and thus represents an important challenge for all trainees performing endoscopic sinus surgery. METHODS: Forty-five otorhinolaryngology trainees and 20 medical school students from 5 academic institutions were enrolled and randomized into 1 of 2 groups...
October 18, 2016: International Forum of Allergy & Rhinology
Rolfe M Radcliffe, Yasmine Messiaen, Nita L Irby, Thomas J Divers, Curtis W Dewey, Katharyn J Mitchell, Lauren V Schnabel, Abraham J Bezuidenhout, Peter V Scrivani, Norm G Ducharme
OBJECTIVE: To report a transnasal, endoscopically guided ventral surgical approach for accessing the cranial and caudal segments of the sphenopalatine sinus for mass removal in a horse. STUDY DESIGN: Case report. ANIMAL: Adult horse with acute onset blindness referable to a soft tissue mass within the sphenopalatine sinus. CLINICAL REPORT: A 7-year-old Warmblood gelding presented with a history of running into a fence and falling...
October 12, 2016: Veterinary Surgery: VS
Daniele Starnoni, Roy Thomas Daniel, Mercy George, Mahmoud Messerer
BACKGROUND: Spontaneous meningoencephaloceles of the lateral sphenoid sinus are rare entities and their peculiar location represent a surgical challenge due to the importance of a wide exposure and skull base reconstruction. They are thought to arise from congenital base defect of the lateral sphenoid or in some cases have been postulated to represent a rare manifestation of altered CSF dynamics. We report the first case in literature of a Chiari malformation type I and a lateral sphenoid encephaloceles revising the theoretical etiology and surgical technique of endoscopic repair...
October 8, 2016: World Neurosurgery
Jenny X Chen, Blake C Alkire, Allen C Lam, William T Curry, Eric H Holbrook
Objectives While bacterial meningitis is a concerning complication after endoscopic skull base surgery, the diagnosis can be made without consideration for aseptic meningitis. This article aims to (1) present a patient with recurrent craniopharyngioma and multiple postoperative episodes of aseptic meningitis and (2) discuss the diagnosis and management of aseptic meningitis. Design Case report and literature review. Results A 65-year-old female patient with a symptomatic craniopharyngioma underwent transsphenoidal resection...
October 2016: Journal of Neurological Surgery Reports
Mathieu Veyrat, Benjamin Verillaud, Philippe Herman, Damien Bresson
BACKGROUND: Endoscopic endonasal approaches (EEA) are an alternative for removing challenging nasopharyngeal or skull base lesions. In some cases, a nasoseptal flap (NSF) is not always available and such complex procedures may lead to carotid arteries exposition and/or dura mater (DM) wide opening. Meticulous carotid coverage and DM reconstruction are crucial for preventing early and delayed complications. METHOD: We propose a step-by-step description of the pedicled temporoparietal fascia flap (TPFF) technique, with a focus on its pitfalls, advantages and limits...
October 7, 2016: Acta Neurochirurgica
V Gellner, W Koele, A Wolf, C Gerstenberger, M Mokry, H Stammberger, P V Tomazic
No abstract text is available yet for this article.
October 3, 2016: Clinical Otolaryngology
Stefan Linsler, Sebastian Antes, Sebastian Senger, Joachim Oertel
OBJECTIVE: The safety of endoscopic skull base surgery can be enhanced by accurate navigation in preoperative computed tomography (CT) and magnetic resonance imaging (MRI). Here, we report our initial experience of real-time intraoperative CT-guided navigation surgery for pituitary tumors in childhood. MATERIALS AND METHODS: We report the case of a 15-year-old girl with a huge growth hormone-secreting pituitary adenoma with supra- and perisellar extension. Furthermore, the skull base was infiltrated...
October 2016: Journal of Neurosciences in Rural Practice
Omar H Ahmed, Sonya Marcus, Jenna R Tauber, Binhuan Wang, Yixin Fang, Richard A Lebowitz
OBJECTIVE: Perioperative lumbar drain (LD) use in the setting of endoscopic cerebrospinal fluid (CSF) leak repair is a well-established practice. However, recent data suggest that LDs may not provide significant benefit and may thus confer unnecessary risk. To examine this, we conducted a meta-analysis to investigate the effect of LDs on postoperative CSF leak recurrence following endoscopic repair of CSF rhinorrhea. DATA SOURCES: A comprehensive search was performed with the following databases: Ovid MEDLINE (1947 to November 2015), EMBASE (1974 to November 2015), Cochrane Review, and PubMed (1990 to November 2015)...
September 27, 2016: Otolaryngology—Head and Neck Surgery
M Kubik, S Lee, C Snyderman, E Wang
BACKGROUND: Skull base injury is an infrequent complication during endoscopic sinus surgery (ESS). We hypothesize that late recognition and repair of CSF leaks during ESS is associated with increased neurologic morbidity. METHODOLOGY: A retrospective review was performed of patients with skull base injury during ESS at a tertiary center from 1999-2015. The study population was separated into early (less than 72 hrs) and late (more than 72 hrs) intervention groups...
September 25, 2016: Rhinology
Alberto Schreiber, Davide Mattavelli, Marco Ferrari, Vittorio Rampinelli, Davide Lancini, Francesco Belotti, Luigi Fabrizio Rodella, Piero Nicolai
BACKGROUND: Over the past decade, the treatment of complex intradural and extradural pathologies via expanded endonasal approaches has been made possible by progresses and refinements in skull base reconstruction techniques. The aim of this anatomic study is to describe a novel endonasal flap, the turbinal flap (TF), based on the middle and superior turbinate mucosa and pedicled on the ethmoidal arteries system. METHODS: Three fresh-frozen (6 sides) cadaver heads previously injected with colored silicone were dissected...
September 21, 2016: International Forum of Allergy & Rhinology
Saleem I Abdulrauf, Ahmed M Ashour, Eric Marvin, Jeroen Coppens, Brian Kang, Tze Yu Yeh Hsieh, Breno Nery, Juan R Penanes, Aysha K Alsahlawi, Shawn Moore, Hussam Abou Al-Shaar, Joanna Kemp, Kanika Chawla, Nanthiya Sujijantarat, Alaa Najeeb, Nadeem Parkar, Vilaas Shetty, Tina Vafaie, Jastin Antisdel, Tony A Mikulec, Randall Edgell, Jonathan Lebovitz, Matt Pierson, Paulo Henrique Pires de Aguiar, Paula Buchanan, Angela Di Cosola, George Stevens
INTRODUCTION: Numerical classification systems for the internal carotid artery (ICA) are available, but modifications have added confusion to the numerical systems. Furthermore, previous classifications may not be applicable uniformly to microsurgical and endoscopic procedures. The purpose of this study was to develop a clinically useful classification system. MATERIALS AND METHODS: We performed cadaver dissections of the ICA in 5 heads (10 sides) and evaluated 648 internal carotid arteries with computed tomography angiography...
July 2016: Journal of Craniovertebral Junction and Spine
Austin S Adams, David O Francis, Paul T Russell
BACKGROUND: Endoscopic repair of anterior skull-base defects has become the gold standard for management of cerebrospinal fluid (CSF) rhinorrhea. Both improved techniques and adjuvant therapies have led to accepted success rates of greater than 90%. As management has evolved, shorter hospitalizations have been required and the goal of this study is to analyze the outcomes of patients repaired on an outpatient basis vs those managed as inpatients postoperatively. METHODS: Patients undergoing endoscopic repair of CSF rhinorrhea between 2004 and 2014 were identified by review of medical records...
September 14, 2016: International Forum of Allergy & Rhinology
Paolo Cappabianca, Francesco Doglietto, Fred Gentili, Piero Nicolai
No abstract text is available yet for this article.
December 2016: Journal of Neurosurgical Sciences
Soroush Larjani, Eric Monteiro, Ian Witterick, Allan Vescan, Gelareh Zadeh, Fred Gentili, David P Goldstein, John R de Almeida
BACKGROUND: The Skull Base Inventory (SBI) was developed to assess the quality of life of patients undergoing endoscopic or open approaches for anterior and central skull base pathologies. In this study, we sought to establish the discriminative and evaluative properties for this instrument. METHODS: The SBI was administered in a cross-sectional fashion to patients who previously had skull base surgery after treatment and then again 2 weeks after completing the instrument...
2016: Journal of Otolaryngology—Head & Neck Surgery
Noritaka Komune, Satoshi Matsuo, Koichi Miki, Albert L Rhoton
OBJECTIVE The application of the endoscope in the lateral skull base increases the importance of the middle ear cavity as the corridor to the skull base. The aim of this study was to define the middle ear as a route to the fundus (lateral end) of the internal acoustic canal and to propose feasible landmarks to the fundus. METHODS This was a cadaveric study; 34 adult cadaveric temporal bones and 2 dry bones were dissected with the aid of the endoscope and microscope to show the anatomy of the transcanal approach to the middle ear and fundus of the internal acoustic canal...
September 2, 2016: Journal of Neurosurgery
Sheri K Palejwala, Jonnae Y Barry, Crystal N Rodriguez, Chandni A Parikh, Stephen A Goldstein, G Michael Lemole
Many neoplasms of the head and neck extend centripetally, gaining access to the central nervous system via nerves through the skull base foramina. Often patients with perineural spread have been excluded from aggressive interventions given the overall poor prognosis and technical difficulty when addressing the perineural components. However, in carefully selected patients combined surgical approaches can provide the greatest potential for disease control as well as neural decompression for symptom relief. We performed a retrospective chart review of 20 consecutive patients who underwent skull base approaches for resection of tumors with intracranial extension via perineural spread from 2011 to 2014...
November 2016: Clinical Neurology and Neurosurgery
Samuel J C Fishpool, Anthony Amato-Watkins, Caroline Hayhurst
The objective is to assess whether free middle turbinate (FMT) graft reconstruction, after endoscopic endonasal pituitary surgery, combines an acceptably low post-operative cerebrospinal fluid (CSF) leak rate with acceptable rhinological morbidity. This study identified 50 patients who underwent endoscopic endonasal pituitary surgery by the senior author in our teaching hospital between May 2011 and June 2012. FMT graft reconstruction was used in 32 cases. 18 patients were judged pre-operatively as not suitable for FMT reconstruction according to a novel skull base reconstructive algorithm...
September 1, 2016: European Archives of Oto-rhino-laryngology
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