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Lateral skull base

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https://www.readbyqxmd.com/read/29152469/eyebrow-incision-for-surgical-evacuation-of-a-lobar-intracerebral-hematoma-with-a-novel-endoport-system
#1
Dale Ding, Colin J Przybylowski, Robert M Starke, R Webster Crowley, Kenneth C Liu
Large lobar intracerebral hemorrhages (ICHs) can cause rapid neurological deterioration, and affected patients have low rates of survival and functional independence. Currently, the role of surgical intervention in the management patients with lobar ICHs is controversial. Minimally invasive technologies have been developed which may potentially decrease the operative morbidity of ICH surgery. The aim of this case report is to describe the technical aspects of the use of a novel minimally invasive endoport system, the BrainPath (NICO, Indianapolis, IN, USA), through an eyebrow incision for evacuation of a large lobar hematoma...
June 2017: Journal of Cerebrovascular and Endovascular Neurosurgery
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
#2
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/29124088/considerations-and-code-for-partial-volume-correcting-18-f-av-1451-tau-pet-data
#3
Suzanne L Baker, Anne Maass, William J Jagust
[(18)F]-AV-1451 is a leading tracer used with positron emission tomography (PET) to quantify tau pathology. However, [(18)F]-AV-1451 shows "off target" or non-specific binding, which we define as binding of the tracer in unexpected areas unlikely to harbor aggregated tau based on autopsy literature [1]. Along with caudate, putamen, pallidum and thalamus non-specific binding [2], [3], we have found binding in the superior portion of the cerebellar gray matter, leading us to use inferior cerebellar gray as the reference region...
December 2017: Data in Brief
https://www.readbyqxmd.com/read/29094066/surgical-repair-of-spontaneous-cerebrospinal-fluid-csf-leaks-a-systematic-review
#4
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/m(2)) and female (72%)...
October 2017: Laryngoscope Investigative Otolaryngology
https://www.readbyqxmd.com/read/29075158/locoregional-and-microvascular-free-tissue-reconstruction-of-the-lateral-skull-base
#5
REVIEW
Demetri Arnaoutakis, Sameep Kadakia, Manoj Abraham, Thomas Lee, Yadranko Ducic
The goals of reconstruction following any oncologic extirpation are preservation of function, restoration of cosmesis, and avoidance of morbidity. Anatomically, the lateral skull base is complex and conceptually intricate due to its three-dimensional morphology. The temporal bone articulates with five other cranial bones and forms many sutures and foramina through which pass critical neural and vascular structures. Remnant defects following resection of lateral skull base tumors are often not amenable to primary closure...
November 2017: Seminars in Plastic Surgery
https://www.readbyqxmd.com/read/29069120/lateral-lamella-of-the-cribriform-plate-a-keystone-landmark-proposal-for-a-novel-classification-system
#6
R Gera, F Mozzanica, A Karligkiotis, A Preti, F Bandi, S Gallo, A Schindler, C Bulgheroni, F Ottaviani, P Castelnuovo
BACKGROUND: The aim of this study is to propose a classification of the angle formed by the lateral lamella of the cribriform plate (LLCP) and the horizontal plane passing through the cribriform plate. In particular, the angle was classified into class I (over 80 degrees), class II (45 to 80 degrees, and class III (under 45 degrees) METHODOLOGY: A total of 190 computed tomography scans were retrospectively reviewed in order to obtain four sets of measurements. 1) depth of the cribriform, 2) angle, 3) length of the LLCP, 4) width of the fovea ethmoidalis...
October 25, 2017: Rhinology
https://www.readbyqxmd.com/read/29062647/anatomical-study-of-perfusion-of-a-periosteal-flap-with-a-lateral-pedicle
#7
Boktae Kim, Yoshikazu Inoue, Nobuaki Imanishi, Hak Chang, Yusuke Shimizu, Takayuki Okumoto, Kazuo Kishi
BACKGROUND: Pedicled periosteal flaps are commonly used for tissue defects between the base of the skull and the midfacial area. This study aimed to clarify the 3-dimensional vascular distribution of temporal region flaps. METHODS: Ten fresh cadavers were used. Full-thickness cranial flaps were elevated from the cranial bone and each layer was detached separately. Contrast enhancement of the full thickness of the scalp, macroscopic evaluation, and histologic analyses were performed...
September 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/29057351/versatility-of-sub-occipital-approach-for-foramen-magnum-meningiomas-a-single-centre-experience
#8
Antonio Bocchetti, Valentina Cioffi, Cristian Gragnaniello, Raffaele de Falco
BACKGROUND: Foramen magnum meningiomas (FMM) represent a challenge for neurosurgeons. Multiple surgical strategies have been reported to treat these lesions in their variable location. Contemporary technical innovations allow the utilization of common sub-occipital craniotomy to treat ventrally, ventro-laterally and dorsally located FMMs. We present our technique and experience. METHODS: From November 2004 to November 2015, we treated 14 patients with FMM at the Department of Neurosurgery of the Santa Maria delle Grazie Hospital in Pozzuoli, Naples, Italy...
September 2017: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/29018958/comparison-of-virtual-monoenergetic-and-polyenergetic-images-reconstructed-from-dual-layer-detector-ct-angiography-of-the-head-and-neck
#9
Victor Neuhaus, Nils Große Hokamp, Nuran Abdullayev, Volker Maus, Christoph Kabbasch, Anastasios Mpotsaris, David Maintz, Jan Borggrefe
OBJECTIVES: To compare the image quality of virtual monoenergetic images and polyenergetic images reconstructed from dual-layer detector CT angiography (DLCTA). METHODS: Thirty patients who underwent DLCTA of the head and neck were retrospectively identified and polyenergetic as well as virtual monoenergetic images (40 to 120 keV) were reconstructed. Signals (± SD) of the cervical and cerebral vessels as well as lateral pterygoid muscle and the air surrounding the head were measured to calculate the CNR and SNR...
October 10, 2017: European Radiology
https://www.readbyqxmd.com/read/28990662/the-radioanatomy-of-endonasal-flap-coverage-of-skull-base-defects-a-tool-for-preoperative-planning
#10
Francisco J D MacArthur, Gerald W McGarry
OBJECTIVES/HYPOTHESIS: To develop a tool for the calculation of surgical skull base defects and endonasal flap dimensions on preoperative computed tomography (CT) to aid surgical planning. STUDY DESIGN: Case series. METHODS: A literature search was conducted to identify all endonasal flaps. There were five basic models identified. These are the nasoseptal flap, anterior lateral nasal wall flap, bipedicled anterior septal flap, posterior pedicled inferior turbinate flap, and middle turbinate flap...
October 9, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28982971/sound-production-mechanism-in-pomatoschistus-pictus
#11
Eric Parmentier, Maud Petrinisec, Paulo J Fonseca, M Clara P Amorim
Fish acoustic signals play a major role during agonistic and reproductive interactions. Among the sound-generating fish, Gobiidae, a large fish taxa with 1866 valid species, is one of the most studied groups of acoustic fishes with sound production being documented in a number of species. Paradoxically, the sound producing mechanism remains poorly studied in this group. The painted goby Pomatoschistus pictus produces two distinct sounds called drums and thumps. A combination of morphological and experimental analyses involving high-speed videos synchronized with sound recordings supports that drums are produced during lateral head movements involving at least the alternate contractions of the muscles levator pectoralis originating on the skull and inserting on the pectoral girdle...
October 5, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28966150/benchmarking-distance-control-and-virtual-drilling-for-lateral-skull-base-surgery
#12
Eduard H J Voormolen, Sander Diederen, Marijn van Stralen, Peter A Woerdeman, Herke Jan Noordmans, Max A Viergever, Luca Regli, Pierre A Robe, Jan Willem Berkelbach van der Sprenkel
BACKGROUND: Novel audiovisual feedback methods were developed to improve image guidance during skull base surgery by providing audiovisual warnings when the drill tip enters a protective perimeter set at a distance around anatomic structures ("distance control") and visualizing bone drilling ("virtual drilling"). OBJECTIVE: To benchmark the drill damage risk reduction provided by distance control, to quantify the accuracy of virtual drilling, and to investigate whether the proposed feedback methods are clinically feasible...
September 29, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28940480/thirty-day-morbidity-and-mortality-following-otologic-neurotologic-surgery-analysis-of-the-national-surgical-quality-improvement-program
#13
Zachary G Schwam, Elias Michaelides, Phoebe Kuo, Michael A Hajek, Benjamin L Judson, Christopher Schutt
OBJECTIVES/HYPOTHESIS: To determine the rate and timing of, as well as risk factors for, postoperative morbidity and mortality following otologic and neurotologic surgery. STUDY DESIGN: Retrospective cohort study. METHODS: A total of 1,381 patients were identified in the American College of Surgeons National Surgical Quality Improvement Program for the years 2005 to 2010. Simple summary statistics, χ(2) , and multivariable logistic regression were performed...
September 22, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28938328/bulla-down-endoscopic-sphenoidotomy
#14
Mohannad Al-Qudah
Surgical approach to the sphenoid sinus is still one of the most challenging steps in sinus surgery. The author describes a novel, simple, and safe technique to access sphenoid sinus to manage isolated sphenoid pathologies or approach skull base by removing the bulla ethmoidalis and temporarily lateralizing the middle turbinate during endoscopic sinus surgery. The current approach provides an effective method to access the sphenoid sinus without increasing morbidity and avoids unnecessary possible complications associated with turbinates' resection...
November 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28935488/utility-of-tc-99m-mdp-bone-spect-in-evaluation-of-osseous-involvement-in-craniofacial-malignancies
#15
Shabana Saeed, Saif Ul Haq, Muhammad Sohaib, Ali Nawaz Khan
PURPOSE: To assess the role of technetium-99m methoxy diphosphonate (Tc-99m MDP) single photon emission tomography (SPECT) imaging for the detection of osseous invasion in craniofacial malignancies. MATERIAL AND METHODS: The study was performed in 45 subjects using Tc-99m MDP (740 MBq). Out of 45 subjects, 30 were patients had different craniofacial malignancies, and 15 subjects who did not have any malignancy served as controls. Planar imaging was performed. Anterior, lateral and oblique lateral views of the skull were obtained...
August 24, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28922880/a-side-door-to-meckel-s-cave-anatomic-feasibility-study-for-the-lateral-transorbital-approach
#16
Blake Harrison Priddy, Cristian Ferrareze Nunes, Andre Beer-Furlan, Ricardo Carrau, Iacopo Dallan, Daniel Monte-Serrat Prevedello
BACKGROUND: In the last decade, endoscopic skull base surgery has significantly developed and generated a plethora of techniques and approaches for access to the cranial ventral floor. However, the exploration for the least-aggressive, maximally efficient approach continues. OBJECTIVE: To describe in detail an anatomical study, along with the technical nuances of a novel endoscopic approach to Meckel's Cave (MC) using a lateral transorbital (LTO) route. METHODS: Eighteen orbits of injected cadaveric specimens were operated on, using an endoscopic LTO approach to MC, middle cranial fossa, and paramedian skull base preserving the orbital rim...
October 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28922245/a-craniometric-analysis-of-cranial-base-and-cranial-vault-differences-in-patients-with-metopic-craniosynostosis
#17
Sanjay Naran, Daniel Mazzaferro, Ari Wes, Arastoo Vossough, Scott P Bartlett, Jesse A Taylor
PURPOSE: The effect of synostosis is not confined to the immediate vicinity of the suture. The authors hypothesized metopic craniosynostosis results in migration of lateral structures from midline, and differences in segmental volume of the cranial fossa. METHODS: A retrospective case-controlled cohort analysis of patients with nonsyndromic metopic craniosynostosis was performed. Craniometric angles, distances to landmarks from midline, cephalic index, and segmented volume ratios were calculated...
November 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28899830/simple-lateral-suboccipital-approach-and-modification-for-vertebral-artery-aneurysms-a-study-of-52-cases-over-10-years
#18
Mardjono Tjahjadi, Behnam Rezai-Jahromi, Joseph Serrone, Ville Nurminen, Joham Choque-Velasquez, Riku Kivisaari, Hanna Lehto, Mika Niemelä, Juha Hernesniemi
INTRODUCTION: Complex skull base approaches are frequently used to treat intracranial vertebral artery (VA) and proximal posterior inferior cerebellar artery (PICA) aneurysms. These complex procedures are associated with higher risk of neurovascular injury. Hence, a less invasive surgical approach is needed to improve treatment's efficacy and safety. MATERIAL AND METHODS: A retrospective analysis was conducted on clinical and radiological data from surgeries where simple lateral suboccipital and "lateral enough" approaches were used to clip VA aneurysms in the Department of Neurosurgery at Helsinki University Central Hospital from 2000 - 2009...
September 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28882600/lesson-to-be-remembered-from-a-skull-base-tumor
#19
C Briet, F Bernard, P Rodien
The natural history of giant prolactinomas is not known. While it is commonly accepted that the enlargement of microadenoma is rare and more limited than macroadenoma, it is so far uncommon that macroadenoma progress to giant adenoma. Thus, spontaneous enlargement of adenomas is poorly documented. We report the unusual history of undiagnosed microprolactinoma, revealed 12years later at the stage of a giant adenoma presenting as a skull base tumor. This unique observation provides information on the natural history of giant adenomas and arguments for particular attention to microadenomas with signs of invasion...
September 4, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28875046/ganglioneuroma-of-the-external-auditory-canal-and-middle-ear
#20
Hesham Saleh Almofada, Michael Steven Timms, M Anas Dababo
OBJECTIVE: We report an extremely rare case of ganglioneuroma involving the external auditory canal and middle ear. CASE REPORT: Ganglioneuromas are rare benign mature tumors thought to originate from sympathetic ganglions, with the highest incidence in the retroperitoneum, adrenal medulla, and posterior mediastinum. We present a case of ganglioneuroma of the external auditory canal and middle ear. At the age of 12 months, the patient was diagnosed with neuroblastoma stage IV with metastasis to the squamous temporal bone, bone marrow, and skull base...
2017: Case Reports in Otolaryngology
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