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Skull base surgery

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https://www.readbyqxmd.com/read/28922880/a-side-door-to-meckel-s-cave-anatomic-feasibility-study-for-the-lateral-transorbital-approach
#1
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/28922579/evaluating-real-time-effects-of-topical-1-1000-epinephrine-in-endoscopic-sinus-and-skull-base-surgery-on-hemodynamic-parameters-through-intraoperative-arterial-line-monitoring
#2
Michael T Yim, Omar G Ahmed, Masayoshi Takashima
BACKGROUND: Administration of topical 1:1000 epinephrine is commonly used in practice to achieve vasoconstriction during endoscopic sinus surgery and skull-base surgery; however, real-time effects on cardiovascular changes from systemic absorption have not been well studied. METHODS: Twenty-six patients undergoing endoscopic transsphenoidal resection of a pituitary lesion at a single institution were included into the study. Following arterial line placement by anesthesiology, 6 cottonoid pledgets soaked in 1:1000 epinephrine were placed into the bilateral nasal passages...
September 18, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28917287/intraoperative-computed-tomography-in-cranial-neurosurgery
#3
REVIEW
Christian Schichor, Nicole Terpolilli, Jun Thorsteinsdottir, Jörg-Christian Tonn
The challenge for treating complex lesions with the aim of minimal surgery-related morbidity has generated an increasing demand for sophisticated intraoperative imaging modalities. Newest generations of intraoperative computed tomography (CT) scanners offer a multitude of hardware and software improvements resulting in higher image quality that further propagates its everyday usage in the interdisciplinary operative setting. This article describes workflow and applicability of intraoperative CT scanning in cranial neurosurgery, in subspecialties like skull base or vascular neurosurgery, and its advantages and limitations...
October 2017: Neurosurgery Clinics of North America
https://www.readbyqxmd.com/read/28914872/-the-efficacy-of-desmopressin-in-the-treatment-of-central-diabetes-insipidus-after-resection-of-chiasmo-sellar-region-tumors
#4
L I Astaf'eva
Central diabetes insipidus (CDI) is a neuroendocrine disease, the pathogenesis of which is associated with abnormal secretion of the antidiuretic hormone. One of the specific causes of CDI is neurosurgical resection of chiasmatic-sellar region tumors. AIM: to study the efficacy and safety of desmopressin in CDI patients after resection of chiasmatic-sellar region (CSR) tumors. MATERIAL AND METHODS: Examination and treatment of patients were performed at a hospital for 7-14 days after surgery and then were continued after discharge...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28902803/cochlear-implantation-in-otosclerosis-surgical-and-auditory-outcomes-with-a-brief-on-facial-nerve-stimulation
#5
Ashish Vashishth, Andrea Fulcheri, Gianluca Rossi, Sampath Chandra Prasad, Antonio Caruso, Mario Sanna
OBJECTIVES: 1) To review the surgical and auditory outcomes in patients of cochlear implantation in otosclerosis. 2) To review complications and postimplantation facial nerve stimulation (FNS). 3) To compare the auditory outcomes between patients displaying cochlear ossification to the nonossified ones. STUDY DESIGN: Retrospective study. SETTING: Quaternary Otology and Skull base surgery center. SUBJECTS AND METHODS: Charts of 36 patients (38 ears) with otosclerosis undergoing cochlear implantation were reviewed from the cochlear implant database...
October 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28899830/simple-lateral-suboccipital-approach-and-modification-for-vertebral-artery-aneurysms-a-study-of-52-cases-over-10-years
#6
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/28895661/the-role-of-endoscopy-in-anterior-skull-base-surgery
#7
Nickalus R Khan, Vincent Nguyen, Madison Michael
No abstract text is available yet for this article.
September 8, 2017: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/28887285/the-occipital-artery-as-an-alternative-donor-for-low-flow-bypass-to-anterior-circulation-after-ica-occlusion-failure-prior-to-exenteration-for-an-atypical-cavernous-sinus-meningioma-a-technical-case-report
#8
Shunya Hanakita, Stéphanie Lenck, Moujahed Labidi, Kentaro Watanabe, Damien Bresson, Sébastien Froelich
BACKGROUND: and Importance: In skull-base tumors involving the cavernous sinus (CS), indications for aggressive resection are sparse and must be carefully examined because of their invasiveness. With careful evaluation, techniques including internal carotid artery (ICA) sacrifice with or without extracranial-intracranial (EC-IC) bypass may still be an option in some cases. In addition, previous surgery with the sacrifice of potential donor vessels requires adjusting the revascularization strategy...
September 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28887277/single-step-resection-of-an-intraosseous-meningioma-and-cranial-reconstruction-technical-note
#9
C E Broeckx, T J J Maal, R D Vreeken, R R M Bos, M Ter Laan
OBJECTIVE: Simultaneous tumour resection and cranial reconstruction can be a challenging task. Surgical navigation is an indispensible tool in making this single-step procedure possible. In this case report we describe a new technique for this procedure to ensure a precise resection and optimal fit of the implant in a patient with an intraosseous meningioma. METHODS: We generated a 3D model of the patients skull based on a CT-scan and created a digital 'resection line' object using 3D Studio Max 2016 software...
September 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28883763/cyberknife-stereotactic-radiosurgery-and-denosumab-for-giant-cell-tumour-of-the-skull-base-case-report
#10
Cuauhtemoc de la Peña, Jorge H Guajardo, Maria F Gonzalez, Miguel A Hinojosa, Erick Cardona
Giant cell tumours (GCT) of the skull is a rare entity with only small number of cases reported in literature and optimal treatment is yet to be determined. These tumours have shown high recurrence rates after incomplete surgery, usually occurring during the first year. Even with new surgical techniques a complete resection in skull base tumours is not always possible without functional compromise. Therefore, adjuvant therapy is essential to enhance local control and quality of life. We report a rare case of a 34-year-old male with giant cell tumour (GCT) of the skull base involving the petrous bone, clivus and sphenoid body...
November 2017: Reports of Practical Oncology and Radiotherapy
https://www.readbyqxmd.com/read/28882714/combined-minimally-invasive-supraciliary-and-transfacial-approach-for-large-tumors-with-skull-base-and-sinonasal-involvement
#11
Pal Barzo, Zsolt Zador, Mihaly Bodosi, Zsolt Bella, Daniel Jambor, Bela Fulop, Jeno Czigner
BACKGROUND: Tumors invading both the anterior skull base and the sinonasal area have been traditionally accessed via largely invasive open craniofacial approaches. Minimally invasive extended endoscopic endonasal approaches have recently become increasingly available, but have anatomical limitations and require incremental experience and thus high patient volume. Our objective was to assess the applicability of a novel combination of the minimally invasive supraciliary incision and the limited maxillofacial osteotomy as a combined surgical approach for large tumors invading both the anterior skull base and the sinonasal area...
September 4, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28881251/registration-and-fusion-quantification-of-augmented-reality-based-nasal-endoscopic-surgery
#12
Yakui Chu, Jian Yang, Shaodong Ma, Danni Ai, Wenjie Li, Hong Song, Liang Li, Duanduan Chen, Lei Chen, Yongtian Wang
This paper quantifies the registration and fusion display errors of augmented reality-based nasal endoscopic surgery (ARNES). We comparatively investigated the spatial calibration process for front-end endoscopy and redefined the accuracy level of a calibrated endoscope by using a calibration tool with improved structural reliability. We also studied how registration accuracy was combined with the number and distribution of the deployed fiducial points (FPs) for positioning and the measured registration time...
August 3, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28875123/costs-and-perioperative-outcomes-associated-with-open-versus-endoscopic-resection-of-sinonasal-malignancies-with-skull-base-involvement
#13
Terence S Fu, Eric Monteiro, Ian Witterick, Allan Vescan, Gelareh Zadeh, Fred Gentili, John R de Almeida
Objective  To compare financial and perioperative outcomes between endoscopic and open surgical approaches in the surgical management of sinonasal malignancies. Design  Retrospective chart review. Setting  Tertiary care hospital. Participants  Patients undergoing surgical resection of a sinonasal malignancy from January 2000 to December 2014. Main Outcome Measures  In-hospital costs, complications, and length of stay (LOS). Results  Of 106 patients, 91 received open surgery (19 free flap and 72 non-free flap) and 15 were treated with purely endoscopic approaches...
October 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28875116/performance-of-robotic-assistance-for-skull-base-biopsy-a-phantom-study
#14
Jian-Hua Zhu, Jing Wang, Yong-Gui Wang, Meng Li, Yu-Xing Guo, Xiao-Jing Liu, Chuan-Bin Guo
Objectives  This study aims to evaluate the feasibility of a custom robot system guided by optical cone beam computed tomography (CBCT)-based navigation for skull base biopsy. Design  An accuracy study was conducted. Setting  Platform for navigation and robot-aided surgery technology. Participants  Phantom skull. Main Outcome Measures  The primary outcome measure was to investigate the accuracy of robot-assisted needle biopsy for skull base tumors. A 14-gauge needle was automatically inserted by the five degrees of freedom robot into the intended target, guided by optical navigation...
October 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28867323/endoscopic-middle-cranial-fossa-reconstruction-via-a-subtemporal-keyhole-a-technical-note
#15
Fuminari Komatsu, Masaaki Imai, Akihiro Hirayama, Naokazu Hayashi, Shinri Oda, Masami Shimoda, Mitsunori Matsumae
BACKGROUND: Skull base reconstruction is an essential technique for repairing cerebrospinal fluid (CSF) leakage. A reliable method for middle cranial fossa (MCF) reconstruction with minimal invasiveness has not been reported. An initial case of endoscopic MCF reconstruction via a subtemporal keyhole is described. CASE DESCRIPTION: A 57-year-old man developed severe meningitis and was diagnosed with spontaneous CSF leakage from bone defects on the tegmen tympani...
August 31, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28865090/sinonasal-quality-of-life-after-endoscopic-resection-of-malignant-sinonasal-and-skull-base-tumors
#16
Jordan T Glicksman, Arjun K Parasher, Steven G Brooks, Alan D Workman, Justina L Lambert, Jenna E Bergman, James N Palmer, Nithin D Adappa
OBJECTIVES: Improvement in sinonasal quality of life (QoL) following sinus surgery has been well-documented across the literature. To our knowledge, only one series has evaluated long-term QoL in patients undergoing tumor resection, and that study demonstrated no improvement in rhinologic QoL following malignant tumor resection at 2-year follow-up. The objective of the present study was to evaluate QoL in the 2 years following endoscopic malignant tumor resection. METHODS: A prospective cohort study was performed, including patients with both malignant and benign sinonasal tumors in a tertiary academic medical center...
September 2, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28859712/long-term-olfactory-outcome-after-nasoseptal-flap-reconstructions-in-midline-skull-base-surgery
#17
Michael B Soyka, Carlo Serra, Luca Regli, Eva Meier, David Holzmann
BACKGROUND: The nasoseptal flap (NSF) is a universally used surgical technique to cover defects of the skull base after extended sinonasal surgery. Long-term follow-up of complications, sequelae, and smell function is largely unknown. OBJECTIVE: The main objective of this study was to investigate monorhinal olfaction after transsphenoidal skull base surgery. METHODS: Patients who underwent skull base surgery for midline lesions (craniopharyngioma and pituitary tumors) by using a NSF, also referred to as the Haddad flap, were assessed for their long-term outcome...
September 1, 2017: American Journal of Rhinology & Allergy
https://www.readbyqxmd.com/read/28855286/improved-methods-for-acrylic-free-implants-in-non-human-primates-for-neuroscience-research
#18
Jacqueline A Overton, Dylan F Cooke, Adam B Goldring, Steven A Lucero, Conor Weatherford, Gregg H Recanzone
Traditionally, head fixation devices and recording cylinders have been implanted in non-human primates (NHP) using dental acrylic, in spite of several shortcomings associated with acrylic. The use of more biocompatible materials such as titanium and PEEK is becoming more prevalent in NHP research. We describe a cost-effective set of procedures that maximizes the integration of headposts and recording cylinders with the animal's tissues while reducing surgery time. Nine rhesus monkeys were implanted with titanium headposts and one of these was also implanted with a recording chamber...
August 30, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28845380/endovascular-extraction-of-a-needle-from-the-internal-carotid-artery-a-novel-approach-to-a-controversial-dental-misadventure
#19
Jonathan P Giurintano, Jessica Somerville, Merry Sebelik, Daniel Hoit, L Madison Michael, Courtney B Shires
Objective  To review the literature concerning the management of dental needles broken off into the deep spaces of the neck, to report what we believe is the first case of a fractured dental needle migrating into the jugular foramen, and the unconventional use of endovascular intervention to retrieve the needle fragment. Design  Case report with review of literature. Setting  Academic tertiary care center. Participants  Intervention was performed by the otolaryngology-head and neck surgery, vascular surgery, and neurovascular interventional radiology teams...
July 2017: Journal of Neurological Surgery Reports
https://www.readbyqxmd.com/read/28844919/guidewire-breakage-during-cavernous-sinus-sampling-a-rare-complication-and-its-treatment
#20
Necmettin Tanriover, Baris Kucukyuruk, Saffet Tuzgen, Nil Comunoglu, Osman Kizilkilic, Nurperi Gazioglu
BACKGROUND: Venous sampling methods are valuable tools for the diagnosis of pituitary adenomas. However, these interventions also have their complications, which may complicate the treatment process. CASE DESCRIPTION: A forty-nine year old female pituitary adenoma patient with preliminary diagnosis of Cushing's disease underwent cavernous sinus sampling (CSS) to delineate the adenoma. The micro guidewire broke during the procedure and the distal part of the micro guidewire had to be left within the right cavernous sinus...
August 24, 2017: World Neurosurgery
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