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endoscopic endonasal skull base

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https://www.readbyqxmd.com/read/28623412/long-term-follow-up-after-endoscopic-trans-sphenoidal-surgery-or-initial-observation-in-clivus-chordomas
#1
Jon Ramm-Pettersen, Radek Frič, Jon Berg-Johnsen
BACKGROUND: Resection of clivus chordomas through extensive skull base approaches is associated with high mortality and morbidity even in experienced hands. We report our experience with endoscopic trans-sphenoidal surgery, or a "wait-and-scan" strategy in selected patients. METHOD: Ten patients were diagnosed with clivus chordomas during an 8-year period. Six patients underwent primary treatment with endoscopic trans-sphenoidal surgery, followed by adjuvant proton-beam therapy in three of these patients...
June 16, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28603682/an-automated-methodology-for-assessing-anatomy-specific-instrument-motion-during-endoscopic-endonasal-skull-base-surgery
#2
R Alex Harbison, Yangming Li, Angelique M Berens, Randall A Bly, Blake Hannaford, Kris S Moe
Objectives  Describe instrument motion during live endoscopic skull base surgery (ESBS) and evaluate kinematics within anatomic regions. Design  Case series. Setting  Tertiary academic center. Participants  A single skull base surgeon performed six anterior skull base approaches to the pituitary. Main Outcomes and Measures  Time-stamped instrument coordinates were recorded using an optical tracking system. Kinematics (i.e., mean cumulative instrument travel, velocity, acceleration, and angular velocity) was calculated by anatomic region including nasal vestibule, anterior and posterior ethmoid, sphenoid, and lateral opticocarotid recess (lOCR) regions...
June 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28598276/risk-factors-associated-with-postoperative-cerebrospinal-fluid-leak-after-endoscopic-endonasal-skull-base-surgery
#3
Shannon Fraser, Paul A Gardner, Maria Koutourousiou, Mark Kubik, Juan C Fernandez-Miranda, Carl H Snyderman, Eric W Wang
OBJECTIVE The aim in this paper was to determine risk factors for the development of a postoperative CSF leak after an endoscopic endonasal approach (EEA) for resection of skull base tumors. METHODS A retrospective review of patients who underwent EEA for the resection of intradural pathology between January 1997 and June 2012 was performed. Basic demographic data were collected, along with patient body mass index (BMI), tumor pathology, reconstruction technique, lumbar drainage, and outcomes. RESULTS Of the 615 patients studied, 103 developed a postoperative CSF leak (16...
June 9, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28593111/phantosmia-and-dysgeusia-following-endoscopic-transcribriform-approaches-to-olfactory-groove-meningiomas
#4
Andrew S Venteicher, Jay I Kumar, Emma A Murphy, Stacey T Gray, Eric H Holbrook, William T Curry
The endoscopic, endonasal transcribriform approach (EETA) is an important technique used to directly access the anterior skull base and is increasingly being used in the management of olfactory groove meningiomas (OGMs). As this approach requires removal of the cribriform plate and olfactory epithelium en route to the tumor, patients are anosmic postoperatively. Here, we report the development of phantosmia and dysgeusia in two patients who underwent EETAs for OGMs, which has not yet been reported in the literature...
June 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28593110/endoscopic-endonasal-transclival-approach-versus-dual-transorbital-port-technique-for-clip-application-to-the-posterior-circulation-a-cadaveric-anatomical-and-cerebral-circulation-simulation-study
#5
Jeremy N Ciporen, Brandon Lucke-Wold, Aclan Dogan, Justin Cetas, William Cameron
Purpose  Simulation training offers a useful opportunity to appreciate vascular anatomy and develop the technical expertise required to clip intracranial aneurysms of the posterior circulation. Materials and Methods  In cadavers, a comparison was made between the endoscopic transclival approach (ETA) alone and a combined multiportal approach using the ETA and a transorbital precaruncular approach (TOPA) to evaluate degrees of freedom, angles of visualization, and ergonomics of aneurysm clip application to the posterior circulation depending on basilar apex position relative to the posterior clinoids...
June 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28593109/extent-of-endoscopic-resection-for-anterior-skull-base-tumors-an-mri-based-volumetric-analysis
#6
Ian J Koszewski, Gregory Avey, Azam Ahmed, Lucas Leonhard, Matthew R Hoffman, Timothy M McCulloch
Objective  To determine the volume of ventral skull base tumor removed following endoscopic endonasal (EEA) resection using MRI-based volumetric analysis and to evaluate the inter-rater reliability of such analysis. Design  Retrospective case series. Setting  Academic tertiary care hospital. Participants  EEA patients November 2012 to August 2015. Main Outcome Measures  Volumetric analysis of pre- and immediately postoperative MR imaging was performed independently by two investigators. The percentage of total tumor resected was evaluated according to resection goal and tumor type...
June 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28582956/endoscopic-endonasal-transsphenoidal-approach-from-the-surgeon-point-of-view
#7
Do Hyun Kim, Yong-Kil Hong, Sin-Soo Jeun, Jae-Sung Park, Dong-Jun Lim, Soo Whan Kim, Jin Hee Cho, Yong Jin Park, YulGyun Kim, Sung Won Kim
OBJECTIVE: In February 2009, the authors' center formed a team of neurosurgeons, otolaryngologists, endocrinologists, and radiologists to perform pituitary surgery using the endoscopic endonasal transsphenoidal approach (EETSA). This paper reviews the authors' experience with the technique, pathological outcomes, hormone profiles, and postoperative complications. METHODS: Between February 2009 and December 2015, 535 patients underwent the EETSA with 2-nostrils/4-hands surgery...
June 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28578115/2d-hd-versus-3d-endoscopy-in-endonasal-skull-base-surgery-a-comparative-pre-clinical-study
#8
Vittorio Rampinelli, Francesco Doglietto, Davide Mattavelli, Jimmy Qiu, Elena Raffetti, Alberto Schreiber, Andrea Bolzoni Villaret, Walter Kucharczyk, Francesco Donato, Marco Maria Fontanella, Piero Nicolai
BACKGROUND: Three-dimensional (3D) endoscopy has been recently introduced in endonasal skull base surgery. Only a relatively limited number of studies have compared it to two-dimensional, high definition (2D-HD) technology. OBJECTIVE: To analyze, in a preclinical setting for endonasal endoscopic surgery, surgical maneuverability comparing 2D-HD and 3D endoscopy. METHODS: A group of 68 volunteers, both novice and experienced surgeons, were asked to perform two tasks, namely simulating grasping and dissection surgical maneuvers, in a model of the nasal cavities...
May 31, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28574308/clinical-outcomes-of-an-endoscopic-transclival-and-transpetrosal-approach-for-primary-skull-base-malignancies-involving-the-clivus
#9
Yong Hwy Kim, Chiman Jeon, Young-Bem Se, Sang Duk Hong, Ho Jun Seol, Jung-Ii Lee, Chul-Kee Park, Dong Gyu Kim, Hee-Won Jung, Doo Hee Han, Do-Hyun Nam, Doo-Sik Kong
OBJECTIVE The endoscopic endonasal approach for treating primary skull base malignancies involving the clivus is a formidable task. The authors hypothesized that tumor involvement of nearby critical anatomical structures creates hurdles to endoscopic gross-total resection (GTR). The aim of this study was to retrospectively review the clinical outcomes of patients who underwent an endoscopic endonasal approach to treat primary malignancies involving the clivus and to analyze prognostic factors for GTR. METHODS Between January 2009 and November 2015, 42 patients underwent the endoscopic endonasal approach for resection of primary skull base malignancies involving the clivus at 2 independent institutions...
June 2, 2017: Journal of Neurosurgery
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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...
June 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
#16
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.
June 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
#17
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
#18
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
#19
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
#20
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
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