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Anterior Skull Base

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https://www.readbyqxmd.com/read/29237926/endoscopic-approach-to-remove-intra-extracranial-tumors-in-various-skull-base-regions-10-year-experience-of-a-single-center
#1
Qiu-Hang Zhang, Zhen-Lin Wang, Hong-Chuan Guo, Feng Kong, Bo Yan, Ming-Chu Li, Ge Chen, Jian-Tao Liang, Yu-Hai Bao, Feng Ling
BACKGROUND: Some problems have been found in the usually adopted combined approach for the removal of intra-extracranial tumors in skull base. Herein, we described a pure endoscopic transnasal or transoral approach (ETA) for the removal of intra-extracranial tumors in various skull base regions. METHODS: Retrospectively, clinical data, major surgical complications, pre- and postoperative images, and follow-up information of a series of 85 patients with intra-extracranial tumors in various skull base regions who were treated by surgery via ETA in our skull base center during the past 10 years were reviewed and analyzed...
December 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/29210717/quality-of-life-outcomes-after-endoscopic-approaches-to-intracranial-tumors
#2
Madeleine R Schaberg
PURPOSE OF REVIEW: To review the literature on quality of life (QOL) in endoscopic approaches to anterior and central intracranial skull-base disease. As endoscopic surgical techniques have gained widespread acceptance and complications and morbidity remain low and comparable with microscopic and open approaches, a shift to focusing on patients' perception of their own well being as an important outcome parameter has been made. In addition to the traditional measurements of surgical outcomes (extent of resection, recurrence rate, morbidity, survival, and complication rate), the success of a surgery can now be assessed using QOL measures...
November 27, 2017: Current Opinion in Otolaryngology & Head and Neck Surgery
https://www.readbyqxmd.com/read/29198399/influence-of-physiological-stress-on-the-presence-of-hypoplasia-and-fluctuating-asymmetry-in-a-medieval-population-from-the-village-of-sypniewo
#3
Aleksandra Gawlikowska-Sroka, Pawel Dabrowski, Jacek Szczurowski, Edyta Dzieciolowska-Baran, Tomasz Staniowski
This study aims to estimate the levels of physiological stress in the medieval rural population of Sypniewo by evaluating patterns of fluctuating asymmetry (FA) and enamel hypoplasia (EH), and provide information on the influence of physiological stress during the prenatal and perinatal period on early childhood development. Stress is defined as any external or internal condition that challenges homeostasis of an organism. FA is associated with physiological stress occurring mainly during prenatal development and early childhood...
December 2017: International Journal of Paleopathology
https://www.readbyqxmd.com/read/29194713/intraspecific-variation-in-the-domestic-cat-bony-labyrinth-revealed-by-different-measurement-techniques
#4
Rico Schellhorn
The knowledge of intraspecific variation is important to make assumptions on an interspecific level. To study intraspecific variation in the bony labyrinth morphology of the domestic cat, eleven specimens of Felis silvestris catus and two additional subspecies (F. s. lybica, F. s. ornata) were investigated. The sample comprises skulls of adult males and females, as well as juvenile cats. Each bony labyrinth endocast was virtually reconstructed based on µCT scans. To estimate the radius of curvature of each inner ear semicircular canal, three different approaches were tested...
December 1, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/29194254/anterior-skull-base-tumors-the-role-of-transfacial-approaches-in-the-endoscopic-era
#5
Leandro Infantini Dini, Gustavo Rassier Isolan, Evelise Flores, Eduardo Madruga Lombardo, Cláiton Heitz
The basis of craniofacial tumor surgery is complete surgical extirpation, preferably en bloc or with free borders. Craniofacial techniques are the gold standard and primary strategies in the treatment of anterior skull base tumors. In the last decade, the reports favoring results of endoscopic techniques have increased. One could conclude that the classical transfacial approaches might become useless, but, in fact, there is little research comparing these techniques.In this article, the authors present their experience with combined craniofacial resection of anterior craniofacial skull base tumors in 9 consecutive patients between January 2013 and July 2015...
November 29, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29188214/subfrontal-schwannoma-extended-broadly-to-nasal-cavity-treated-by-gamma-knife-radiosurgery-following-surgical-excision-a-case-report
#6
Soo Hee Kim, Jung Hwan Lee, Soon Ki Sung, Chang Hwa Choi
Subfrontal schwannomas are rarely reported. They are usually found only in the subfrontal area, but some extend to the nasal cavity. In these cases, prevention of postoperative cerebrospinal fluid (CSF) leakage through thinned or eroded anterior skull base is important. A 51-year-old female with anosmia and mild nausea was diagnosed as subfrontal extraaxial mass with nasal cavity extension. This mass was initially thought to be an olfactory groove meningioma. We performed a bifrontal craniotomy for surgical excision...
October 2017: Brain Tumor Research and Treatment
https://www.readbyqxmd.com/read/29174239/the-efficiency-and-safety-of-the-autologous-fat-graft-in-reconstruction-of-skull-base-defects-after-resection-of-skull-base-meningiomas
#7
Hussam Metwali, Venelin Gerganov, Breno Nery, Ahmed Aly, Rodrigo Avila-Cervantes, Madjid Samii
INTRODUCTION: reconstruction of skull base after resection of skull base meningioma is of paramount importance. We are presenting a safe and effective method of skull base reconstruction METHODS: a retrospective analysis of patients operated for skull base meningioma from 2007 to 2014. We analyzed the surgical technique, efficiency and safety as well as the graft-related complications. RESULTS: Autologous free fat graft had been used in 55 patients. Thirty nine patients had posterior fossa meningioma related to the petrous bone, and sixteen patients had anterior fossa meningiomas related to the paranasal sinuses...
November 23, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29166425/anatomy-of-the-sphenopalatine-artery-and-its-implications-for-transnasal-neurosurgery
#8
M Eordogh, A Grimm, I Gawish, L Patonay, R Reisch, H R Briner, G Baksa
BACKGROUND: The knowledge of sinonasal vasculature is inevitable in transnasal neurosurgery. We performed an anatomical study on the sphenopalatine artery from the perspective of skull base procedures. METHODOLOGY: To analyse the anatomical landmarks of the sphenopalatine artery, arterial skull corrosion casts (26 head halves) underwent endoscopic transnasal phantom surgery. Furthermore, we performed microsurgical dissection on formaldehyde-fixated cadavers with arterial perfusion (14 head halves) as well as studied Cone Beam CT-scans of anonymised patients and cadavers (115 head sides)...
November 22, 2017: Rhinology
https://www.readbyqxmd.com/read/29160345/influence-of-the-cranial-base-flexion-on-class-i-ii-and-iii-malocclusions-a-systematic-review
#9
Kélei Cristina Mathias de Almeida, Taísa Boamorte Raveli, Camila Ivini Viana Vieira, Ary Dos Santos-Pinto, Dirceu Barnabé Raveli
OBJECTIVE: The aim of this study was to perform a systematic review on the morphological characteristics of the skull base (flexion, anterior length and posterior length) and the concomitant development of malocclusions, by comparing differences in dimorphism, ethnicity and age. METHODS: The articles were selected by means of electronic search on BBO, MEDLINE and LILACS databases from 1966 to 2016. A qualitative evaluation of the methodologies used on the articles was also performed...
September 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/29135804/surgical-management-of-tumors-involving-meckel-s-cave-and-cavernous-sinus-role-of-an-extended-middle-fossa-and-lateral-sphenoidectomy-approach
#10
Daniel Q Sun, Arnold H Menezes, Matthew A Howard, Bruce J Gantz, David M Hasan, Marlan R Hansen
OBJECTIVE: To study the indications and outcomes of lateral sphenoidectomy as part of a combined skull base approach in the treatment of tumors involving Meckel's cave (MC) and cavernous sinus (CS). STUDY DESIGN: Retrospective patient series. SETTING: Tertiary referral center. PATIENTS: Twenty-two consecutive patients (mean age: 45 yr, range: 16-76) who underwent transzygomatic, extended middle fossa approaches for tumors involving MC and CS...
November 13, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29134168/anatomical-region-segmentation-for-objective-surgical-skill-assessment-with-operating-room-motion-data
#11
Yangming Li, Randall A Bly, R Alex Harbison, Ian M Humphreys, Mark E Whipple, Blake Hannaford, Kris S Moe
Background  Most existing objective surgical motion analysis schemes are limited to structured surgical tasks or recognition of motion patterns for certain categories of surgeries. Analyzing instrument motion data with respect to anatomical structures can break the limit, and an anatomical region segmentation algorithm is required for the analysis. Methods  An atlas was generated by manually segmenting the skull base into nine regions, including left/right anterior/posterior ethmoid sinuses, frontal sinus, left and right maxillary sinuses, nasal airway, and sphenoid sinus...
December 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29134167/postoperative-imaging-findings-associated-with-transpalpebral-craniotomy-approach-to-anterior-cranial-fossa
#12
Dennis Monks, Allison Weyer, Peter Thurlow, Khaled Aziz, Erik Happ, Michael Goldberg
Background and Purpose  The transpalpebral "eyelid" approach is a novel alternative to the traditional ciliary or supraciliary incision for supraorbital frontal craniotomy and access to the anterior cranial fossa. Though a prior publication from our institution has described the surgical approach in detail along with cosmetic and clinical outcomes, postoperative imaging findings have not yet been described. As this surgical technique becomes more widely practiced, it is essential for neuroradiologists, oculoplastic surgeons, and skull base neurosurgeons to be familiar with the expected postoperative imaging findings, especially those that prompt subsequent intervention...
December 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29134165/an-innovate-robotic-endoscope-guidance-system-for-transnasal-sinus-and-skull-base-surgery-proof-of-concept
#13
D T Friedrich, F Sommer, M O Scheithauer, J Greve, T K Hoffmann, P J Schuler
Objective  Advanced transnasal sinus and skull base surgery remains a challenging discipline for head and neck surgeons. Restricted access and space for instrumentation can impede advanced interventions. Thus, we present the combination of an innovative robotic endoscope guidance system and a specific endoscope with adjustable viewing angle to facilitate transnasal surgery in a human cadaver model. Materials and Methods  The applicability of the robotic endoscope guidance system with custom foot pedal controller was tested for advanced transnasal surgery on a fresh frozen human cadaver head...
December 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29127655/the-endoscopic-endonasal-approach-is-not-superior-to-the-microscopic-transcranial-approach-for-anterior-skull-base-meningiomas-a-meta-analysis
#14
Ivo S Muskens, Vanessa Briceno, Tom L Ouwehand, Joseph P Castlen, William B Gormley, Linda S Aglio, Amir H Zamanipoor Najafabadi, Wouter R van Furth, Timothy R Smith, Rania A Mekary, Marike L D Broekman
OBJECT: In the past decade, the endonasal transsphenoidal approach (eTSA) has become an alternative to the microsurgical transcranial approach (mTCA) for tuberculum sellae meningiomas (TSMs) and olfactory groove meningiomas (OGMs). The aim of this meta-analysis was to evaluate which approach offered the best surgical outcomes. METHODS: A systematic review of the literature from 2004 and meta-analysis were conducted in accordance with the PRISMA guidelines. Pooled incidence was calculated for gross total resection (GTR), visual improvement, cerebrospinal fluid (CSF) leak, intraoperative arterial injury, and mortality, comparing eTSA and mTCA, with p-interaction values...
November 10, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29125446/suprasellar-and-recurrent-pediatric-craniopharyngiomas-expanding-indications-for-the-extended-endoscopic-transsphenoidal-approach
#15
Andrew F Alalade, Elizabeth Ogando-Rivas, Jerome Boatey, Mark M Souweidane, Vijay K Anand, Jeffrey P Greenfield, Theodore H Schwartz
OBJECTIVE The expanded endonasal endoscopic transsphenoidal approach has become increasingly used for craniopharyngioma surgery in the pediatric population, but questions still persist regarding its utility in younger children, in recurrent and irradiated tumors, and in masses primarily located in the suprasellar region. The narrow corridor, incomplete pneumatization, and fear of hypothalamic injury have traditionally relegated this approach to application in older children with mostly cystic craniopharyngiomas centered in the sella...
November 10, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29099299/perfusion-based-human-cadaveric-specimen-as-a-simulation-training-model-in-repairing-cerebrospinal-fluid-leaks-during-endoscopic-endonasal-skull-base-surgery
#16
Eisha A Christian, Joshua Bakhsheshian, Ben A Strickland, Vance L Fredrickson, Ian A Buchanan, Martin H Pham, Andrew Cervantes, Michael Minneti, Bozena B Wrobel, Steven Giannotta, Gabriel Zada
OBJECTIVE Competency in endoscopic endonasal approaches (EEAs) to repair high-flow cerebrospinal fluid (CSF) leaks is an essential component of the neurosurgical training process. The objective of this study was to demonstrate the feasibility of a simulation model for EEA repair of anterior skull base CSF leaks. METHODS Human cadaveric specimens were utilized with a perfusion system to simulate a high-flow CSF leak. Neurological surgery residents (postgraduate year 3 or greater) performed a standard EEA to repair a CSF leak using a combination of fat, fascia lata, and pedicled nasoseptal flaps...
November 3, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29094066/surgical-repair-of-spontaneous-cerebrospinal-fluid-csf-leaks-a-systematic-review
#17
REVIEW
Brian C Lobo, Maraya M Baumanis, Rick F Nelson
Objectives: To review the safety and efficacy of surgical management for spontaneous cerebrospinal fluid (CSF) leaks of the anterior and lateral skull base. Data Sources: A systematic review of English articles using MEDLINE. Review Methods: Search terms included spontaneous, CSF, cerebrospinal fluid, endoscopic, middle fossa, transmastoid, leak, rhinorrhea. Independent extraction of articles by 3 authors. Results: Patients with spontaneous CSF leaks are often obese (average BMI of 38 kg/m2) and female (72%)...
October 2017: Laryngoscope Investigative Otolaryngology
https://www.readbyqxmd.com/read/29083507/complications-and-donor-site-morbidity-of-3-layer-reconstruction-with-iliotibial-tract-of-the-anterior-skull-base-retrospective-analysis-of-186-patients
#18
Davide Mattavelli, Alberto Schreiber, Andrea Bolzoni Villaret, Remo Accorona, Mario Turri-Zanoni, Alessia Lambertoni, Marco Ferrari, Paolo Castelnuovo, Piero Nicolai
BACKGROUND: Anterior skull base reconstruction after resection of sinonasal cancers may be challenging when pedicled flaps are unavailable. The purpose of the present study was to analyze the complication rate and donor site morbidity of 3-layer reconstruction with the iliotibial tract (ITT). METHODS: We retrospectively reviewed all anterior skull base reconstructions with ITT performed from 2007 to 2015. Donor site morbidity was investigated by a dedicated questionnaire...
October 30, 2017: Head & Neck
https://www.readbyqxmd.com/read/29075159/endoscopic-endonasal-reconstructive-methods-to-the-anterior-skull-base
#19
REVIEW
Srikant Chakravarthi, Lior Gonen, Alejandro Monroy-Sosa, Sammy Khalili, Amin Kassam
The success of expanded endoscopic endonasal approaches (EEAs) to the anterior skull base, sellar, and parasellar regions has been greatly aided by the advancement in reconstructive techniques. In particular, the pedicled vascularized flaps have been developed and effectively cover skull base defects of varying sizes with a significant reduction in postoperative CSF leaks. There are two aims to this review: (1) We will provide our current, simplified reconstruction algorithm. (2) We will describe, in detail, the relevant anatomy, indications/contraindications, and surgical technique, with a particular emphasis on the nasoseptal flap (NSF)...
November 2017: Seminars in Plastic Surgery
https://www.readbyqxmd.com/read/29075157/open-anterior-skull-base-reconstruction-a-contemporary-review
#20
REVIEW
Daniel Kwon, Alfred Iloreta, Brett Miles, Jared Inman
Skull base extirpative and reconstructive surgery has undergone significant changes due to technological and operative advances. While endoscopic resection and reconstruction will continue to advance skull base surgery for the foreseeable future, traditional open surgical approaches and reconstructive techniques are still contemporarily employed as best practices in certain tumors or patient-specific anatomical cases. Skull base surgeons should strive to maintain a working knowledge and technical skill set to manage these challenging cases where endoscopic techniques have previously failed, are insufficient from anatomical constraints, or tumor biology with margin control supersedes the more minimally invasive approach...
November 2017: Seminars in Plastic Surgery
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