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endoscopic endonasal skull base

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https://www.readbyqxmd.com/read/28531285/paratrigeminal-paraclival-precavernous-or-all-of-the-above-a-circumferential-anatomical-study-of-the-c3-c4-transitional-segment-of-the-internal-carotid-artery
#1
Eleonora Marcati, Norberto Andaluz, Sebastien C Froelich, Lee A Zimmer, James L Leach, Juan Carlos Fernandez-Miranda, Almaz Kurbanov, Jeffrey T Keller
BACKGROUND: Although the term paraclival carotid pervades recent skull base literature, no clear consensus exists regarding boundaries or anatomical segments. OBJECTIVE: To reconcile various internal carotid artery (ICA) nomenclatures for transcranial and endoscopic-endonasal perspectives, we reexamined the transition between lacerum (C3) and cavernous (C4) segments using a C1-C7 segments schema. In this cadaveric study, we obtained a 360°-circumferential view integrating histological, microsurgical, endoscopic, and neuroradiological analyses of this C3-C4 region and identified a distinct transitional segment...
May 21, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28524124/-endoscopic-endonasal-diagnosis-and-treatment-of-skull-base-meningoencephalocele
#2
D N Kapitanov, E V Shelesko, A A Potapov, A D Kravchuk, D N Zinkevich, M V Nersesyan, L A Satanin, A V Sakharov, G V Danilov
PURPOSE: The study purpose was to determine the successful outcome rate of endoscopic endonasal reconstruction of skull base CSF fistulas with removal of meningocele as well as analyze disease relapses. The second purpose of the study was to describe the treatment outcomes, depending on the type, location, and size of meningocele as well as on a technique used to reconstruct the skull base defect. MATERIAL AND METHODS: Three hundred and eleven patients diagnosed with cerebrospinal fluid (CSF) rhinorrhea who underwent surgery at the Burdenko Neurosurgical Institute in the period between 2007 and 2014 were retrospectively analyzed...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28512043/endoscopic-assisted-supraorbital-keyhole-approach-or-endoscopic-endonasal-approach-in-case-of-tuberculum-sellae-meningioma-which-surgical-route-should-be-favoured
#3
Stefan Linsler, Gerrit Fischer, Volodymyr Skliarenko, Axel Stadie, Joachim Oertel
OBJECTIVE: Keyhole approaches are currently under investigation for skull base tumor surgery. They are expected to have a low complication rate with the same successful resection rate compared to endoscopic endonasal procedures. In this study, the authors compare their current series of tuberculum sellae meningiomas resected via an endoscopic endonasal or microsurgical supraorbital keyhole approach. METHODS: Between 2011 and 2016, 16 patients were treated using the supraorbital keyhole procedure and 6 patients received an endoscopic endonasal procedure...
May 13, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28490405/utility-of-early-postoperative-imaging-after-combined-endoscopic-and-open-ventral-skull-base-surgery
#4
Zachary S Mendelson, Kristen A Echanique, Meghan M Crippen, Alejandro Vazquez, James K Liu, Jean Anderson Eloy
PURPOSE: Immediate postoperative imaging is frequently obtained after combined skull base surgery (SBS) with endoscopic endonasal and open transcranial approaches. The importance of early postoperative imaging for detecting complications in these patients is still debatable. In this study, we investigated the clinical utility of early postoperative imaging after combined SBS for determination of postoperative complications. METHODS: A retrospective chart analysis of 21 cases of combined SBS between 2009 and 2015 was performed...
May 1, 2017: American Journal of Rhinology & Allergy
https://www.readbyqxmd.com/read/28481397/endoscopic-endonasal-cerebrospinal-fluid-leak-repair-on-the-ventral-midline-skull-base-a-single-neurosurgical-center-experience
#5
Cihan Isler, Merdin Lyutviev Ahmedov, Mehmet Yigit Akgun, Baris Kucukyuruk, Nurperi Gazioglu, Galip Sanus, Necmettin Tanriover
AIM: The aim of this study was to present the results of endoscopic endonasal repair of ventral midline skull base cerebrospinal fluid (CSF) leak (VMSBL) at our institution and to discuss the technique and results from a neurosurgical perspective. MATERIAL AND METHODS: A retrospective analysis of all VMSBL cases that underwent endoscopic endonasal skull base approach (EESBA) for CSF leak repair at a single tertiary neurosurgical center was performed. Twenty six patients with an average age of 44...
March 25, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28481016/stress-response-and-communication-in-surgeons-undergoing-training-in-endoscopic-management-of-major-vessel-hemorrhage-a-mixed-methods-study
#6
Alistair K Jukes, Annika Mascarenhas, Jae Murphy, Lia Stepan, Tamara N Muñoz, Claudio A Callejas, Rowan Valentine, P J Wormald, Alkis J Psaltis
BACKGROUND: Major vessel hemorrhage in endoscopic, endonasal skull-base surgery is a rare but potentially fatal event. Surgical simulation models have been developed to train surgeons in the techniques required to manage this complication. This mixed-methods study aims to quantify the stress responses the model induces, determine how realistic the experience is, and how it changes the confidence levels of surgeons in their ability to deal with major vascular injury in an endoscopic setting...
May 8, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28439688/erratum-to-endonasal-endoscopic-surgery-in-the-management-of-sinonasal-and-anterior-skull-base-malignancies
#7
Christopher R Roxbury, Masaru Ishii, Jeremy D Richmon, Ari M Blitz, Douglas D Reh, Gary L Gallia
No abstract text is available yet for this article.
April 24, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28433840/the-unusual-presentation-of-a-myxoma-within-the-sphenoid-sinus-case-report-and-review-of-the-literature
#8
Julian V Clarke, Aditi H Mandpe, Peter B Weber, Hannes Vogel, Lewis Z Leng
BACKGROUND: We describe a rare case of a sphenoid sinus myxoma that was resected via an endoscopic endonasal skull base approach. We review the literature regarding these rare tumors of the paranasal sinuses. CASE DESCRIPTION: A 72-year-old woman was diagnosed with an incidental sphenoid sinus tumor and left sphenoid wing meningioma during a workup for left-sided proptosis and diplopia. Biopsies of the sphenoid wing and sphenoid sinus tumors were obtained. After undergoing surgical resection of the meningioma, the patient then underwent definitive resection of the sphenoid sinus myxoma via endoscopic endonasal skull base approach...
April 20, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28412879/quantitative-analysis-of-transnasal-anterior-skull-base-approach-report-of-technology-for-intraoperative-assessment-of-instrument-motion
#9
Angelique M Berens, Richard Alex Harbison, Yangming Li, Randall A Bly, Nava Aghdasi, Manuel Ferreira, Blake Hannaford, Kris S Moe
OBJECTIVE: To develop a method to measure intraoperative surgical instrument motion. This model will be applicable to the study of surgical instrument kinematics including surgical training, skill verification, and the development of surgical warning systems that detect aberrant instrument motion that may result in patient injury. DESIGN: We developed an algorithm to automate derivation of surgical instrument kinematics in an endoscopic endonasal skull base surgery model...
April 1, 2017: Surgical Innovation
https://www.readbyqxmd.com/read/28409727/clival-chordomas-considerations-after-16-years-of-endoscopic-endonasal-surgery
#10
Matteo Zoli, Laura Milanese, Rocco Bonfatti, Marco Faustini-Fustini, Gianluca Marucci, Giovanni Tallini, Corrado Zenesini, Carmelo Sturiale, Giorgio Frank, Ernesto Pasquini, Diego Mazzatenta
OBJECTIVE In the past decade, the role of the endoscopic endonasal approach (EEA) has relevantly evolved for skull base tumors. In this study, the authors review their surgical experience with using an EEA in the treatment of clival chordomas, which are deep and infiltrative skull base lesions, and they highlight the advantages and limitations of this ventral approach. METHODS All consecutive cases of chordoma treated with an EEA between 1998 and 2015 at a single institution are included in this study. Preoperative assessment consisted of neuroimaging (MRI and CT with angiography sequences) and endocrinological, neurological, and ophthalmological evaluations, which were repeated 3 months after surgery and annually thereafter...
April 14, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28385583/endoscopic-endonasal-excision-of-nasal-chondromesenchymal-hamartoma-with-intracranial-extension
#11
M Nakaya, S Yoshihara, A Yoshitomi, S Baba
INTRODUCTION: Nasal chondromesenchymal hamartoma (NCMH) is an extremely rare benign hamartoma of the sinonasal tract, predominantly involving infants and young children. METHODS: We report the case of a 3-year-old boy of NCMH with extension to anterior skull base. RESULTS: The tumor was completely resected piece by piece via an endonasal endoscopic approach. There is no recurrence 3 years after operation. CONCLUSIONS: We reported the case of NCMH extending to skull base was successfully resected by endonasal endoscopic approach...
April 3, 2017: European Annals of Otorhinolaryngology, Head and Neck Diseases
https://www.readbyqxmd.com/read/28362929/metastatic-liposarcoma-of-the-skull-base-a-case-report-and-review-of-literature
#12
Nirmeen Zagzoog, Greta Ra, Alex Koziarz, John Provias, Doron Sommer, Saleh A Almenawer, Kesava Reddy
BACKGROUND AND IMPORTANCE: Myxoid liposarcoma is not an uncommon form of sarcoma. However, it usually affects the lower extremity long bones. Scapular involvement is extremely rare, as is a metastasis to the parasellar region. We present a case of liposarcoma of the skull base originating in the scapular region and metastasizing to the sellar and parasellar regions and provide a review of the pertinent literature. CLINICAL PRESENTATION: A 43-year-old female patient diagnosed with left scapular myxoid liposarcoma was treated with surgical resection...
April 1, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28359922/first-application-of-7t-magnetic-resonance-imaging-in-endoscopic-endonasal-surgery-of-skull-base-tumors
#13
Thomas F Barrett, Hadrien A Dyvorne, Francesco Padormo, Puneet S Pawha, Bradley N Delman, Raj K Shrivastava, Priti Balchandani
BACKGROUND: Successful endoscopic endonasal surgery for the resection of skull base tumors is reliant on preoperative imaging to delineate pathology from the surrounding anatomy. The increased signal-to-noise ratio afforded by 7T MRI can be used to increase spatial and contrast resolution, which may lend itself to improved imaging of skull base. In this study, we apply a 7T imaging protocol to patients with skull base tumors and compare the images to clinical standard of care. METHODS: Images were acquired at 7T on 11 patients with skull base lesions...
March 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28328602/intracranial-anatomic-landmarks-for-endoscopic-endonasal-transcribriform-approach-to-anterior-skull-base
#14
Pinghua Wu, Huikun Zeng, Ying Guan, Ligen Mo, Danke Su
OBJECTIVES: To help surgeons locating anatomic landmarks when performing endoscopic endonasal transcribriform approach to anterior skull base. METHODS: High-resolution axial computed tomography (CT) images at thickness of 0.6 mm, and reconstructed 0.41-mm thick gapless sagittal and coronal CT images were taken from 123 subjects. Using mimics software, first located elementary points and line: nasal spine, midpoint of posterior hard palate and the line between them; then located measured points right/left posterior and anterior points; measured distances between measured points and from measured points to nasal spine and angles between lines connecting measured points to nasal spine and the basic line...
March 21, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28324181/trigeminocardiac-reflex-during-endoscopic-juvenile-nasopharyngeal-angiofibroma-surgery-an-appraisal
#15
Shilpee Bhatia Sharma, Trichy Narayanan Janakiram, Hina Baxi, Balamurugan Chinnasamy
Juvenile nasopharyngeal angiofibroma is a locally aggressive benign tumour which has propensity to erode the skull base. The tumour spreads along the pathways of least resistance and is in close proximity to the extracranial part of trigeminal nerve. Advancements in expanded approaches for endoscopic excision of tumours in infratemporal fossa and pterygopalatine fossa increase the vulnerability for the trigeminocardiac reflex. The manipulation of nerve and its branches during tumour dissection can lead to sensory stimulation and thus inciting the reflex...
March 21, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28321387/free-mucosal-graft-reconstruction-of-the-septum-after-nasoseptal-flap-harvest-a-novel-technique-using-a-posterior-septal-free-mucosal-graft
#16
Frederick Yoo, Edward C Kuan, Marvin Bergsneider, Marilene B Wang
Objectives The nasoseptal flap (NSF) has become the workhorse for reconstruction in endoscopic endonasal skull-base surgery. The NSF, though useful in reconstruction, may lead to significant donor site morbidity. Published techniques to reduce the donor site morbidity, free mucosal grafts, and septal rotational flaps have shown to reduce crusting and remucosalization times. We present a novel technique utilizing posterior septal mucosa as a free mucosal graft for reconstruction of the anterior septal donor site...
April 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28321378/hemi-transseptal-approach-for-pituitary-surgery-a-follow-up-study
#17
Naif Fnais, Salvatore Di Maio, Susan Edionwe, Anthony Zeitouni, Denis Sirhan, Constanza J Valdes, Marc A Tewfik
Objectives The hemi-transseptal (Hemi-T) approach was developed to overcome the potential drawbacks of the nasoseptal flap (NSF) in endoscopic endonasal transsphenoidal skull base surgery. In this study, we describe further refinements on the Hemi-T approach, and report long-term outcomes as compared with traditional methods of skull base reconstruction. Design A retrospective case-control study. Setting Montreal Neurological Institute and Jewish General Hospital, Montreal, Canada. Participants Patients who underwent endoscopic endonasal transsphenoidal approach to skull base pathology...
April 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28321377/single-layer-repair-of-large-anterior-skull-base-defects-without-vascularized-mucosal-flap
#18
Frederick Yoo, Marilene B Wang, Marvin Bergsneider, Jeffrey D Suh
Objectives Bilateral anterior skull base (ASB) defects following endoscopic endonasal tumor resection are most commonly repaired utilizing multilayered reconstruction with a vascularized mucosal flap. Single-layer closure of large ASB defects has been described in the literature but this technique has yet to gain a widespread use. We report our experience with a series of patients who underwent reconstruction of large ASB defects using a single-layer intradural graft, without nasoseptal flaps. We also compared the use of acellular dermal matrix (AlloDerm, LifeCell, Branchburg, New Jersey, United States) or collagen matrix xenograft (Duramatrix, Stryker, Kalamazoo, Michigan, United States) as the graft biomaterial...
April 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28314401/combined-endoscopic-and-open-approaches-in-the-management-of-sinonasal-and-ventral-skull-base-malignancies
#19
REVIEW
James K Liu, Anni Wong, Jean Anderson Eloy
Combined transcranial and endoscopic endonasal approaches remain useful in the treatment of ventral skull base malignancies. The extended bifrontal transbasal approach provides wide access to the anterior ventral skull base and paranasal sinuses without transfacial incisions. In more extensive lesions, the bifrontal transbasal approach can then be combined with an endoscopic endonasal approach (EEA) from below. This article reviews the indications, surgical technique, and operative nuances of combined transbasal and EEA (cranionasal) approaches for the surgical management of ventral skull base malignancies...
April 2017: Otolaryngologic Clinics of North America
https://www.readbyqxmd.com/read/28314400/endoscopic-resection-of-clival-malignancies
#20
REVIEW
Adam J Folbe, Peter F Svider, James K Liu, Jean Anderson Eloy
Surgical management of clival lesions presents numerous therapeutic challenges because of the close proximity of surrounding critical structures. With a detailed understanding of the endoscopic endonasal approach and relevant considerations, appropriate lesions can be removed in a safe and minimally invasive manner. Use of this technique as a primary approach represents the standard of care for many lesions at leading skull base centers, although adjunct techniques may be necessary in extensive lesions and those with significant lateral extension...
April 2017: Otolaryngologic Clinics of North America
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