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https://www.readbyqxmd.com/read/28931264/assessment-of-the-accuracy-and-errors-of-head-up-display-by-an-optical-neuronavigation-system-in-brain-tumor-surgery
#1
Kenichiro Asano, Kosuke Katayama, Kiyohide Kakuta, Kanae Oyama, Hiroki Ohkuma
BACKGROUND: A head-up display (HUD) in which navigational information is projected into the microscope view may enable surgeons to perform operations more efficiently. Projecting depictions of both tumor and important intracranial structures on the HUD may facilitate safe surgery. OBJECTIVE: To investigate accuracy and errors regarding important intracranial structures, errors due to brain shifts, and preservation rates for important intracranial structures. METHODS: A total of 184 surgeries in 172 patients were performed using this operation system...
February 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28929084/long-term-treatment-response-and-patient-outcomes-for-vestibular-schwannoma-patients-treated-with-hypofractionated-stereotactic-radiotherapy
#2
Mira A Patel, Ariel E Marciscano, Chen Hu, Ignacio Jusué-Torres, Rupen Garg, Arif Rashid, Howard W Francis, Michael Lim, Kristin J Redmond, Daniele Rigamonti, Lawrence R Kleinberg
PURPOSE: The aim of this study is to evaluate long-term treatment outcome and toxicities among vestibular schwannoma (VS) patients treated with hypofractionated stereotactic radiotherapy (HSRT). METHODS: 383 patients with unilateral VS treated with HSRT (25 Gy, five fractions) between 1995 and 2007 were retrospectively reviewed. Treatment failure was defined as requiring salvage microsurgery. Posttreatment new/progressive clinical symptoms or increases in baseline tumor volume (BTV) due to treatment effect or progression were noted...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28929078/primary-ewing-s-sarcoma-of-the-temporal-bone-a-rare-case-report-and-literature-review
#3
Divya Gupta, Achal Gulati, Purnima
Ewing's sarcoma is a malignant, round cell tumor arising from the bones and primarily affecting children and adolescent, accounting for 3 % of all childhood malignancies. Although the long bones and the trunk are typically affected, rare cases of it involving isolated bones throughout the body have been reported. Involvement of the skull bones is rare, constituting 1-6 % of the total Ewing's sarcoma cases but those affecting the cranial bones are rarer still, constituting only 1 %. We describe an 8 months old infant having Ewing sarcoma, of the petrous and mastoid parts of temporal bone along with the occipital bone, whose clinical presentation mimicked mastoiditis with facial nerve palsy...
September 2017: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/28927910/hearing-outcome-following-microvascular-decompression-for-hemifacial-spasm-series-of-1434-cases
#4
Na Young Jung, Si Woo Lee, Chang Kyu Park, Won Seok Chang, Hyun Ho Jung, Jin Woo Chang
OBJECTIVE: Although hearing impairment after microvasuclar decompression (MVD) for hemifacial spasm (HFS) is not common, its occurrence could detrimentally affect the patient`s surgical outcome. The object of this study is to address the optimal approaches for reducing postoperative hearing problems after MVD for HFS. METHODS: We retrospectively analyzed the medical records of patients with HFS who underwent MVD with the same surgeon at our institute from March 2003 to October 2016, and reviewed the pertinent literature...
September 16, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28926844/atypical-presentation-of-a-pediatric-cerebellar-ganglioglioma
#5
Richard Bram, Roberta J Seidman, David Chesler
BACKGROUND/AIMS: Gangliogliomas (GGs) are rare central nervous system tumors occurring primarily in the supratentorial compartment with infratentorial instances most often involving the brain stem. Infratentorial GGs typically present with signs and symptoms of increased intracranial pressure (ICP), cranial nerve deficits, or focal cerebellar findings; rarely, these tumors have been associated with focal seizures. METHODS: In this report, we describe an atypical presentation of a cerebellar GG in a 20-month-old male who initially presented with syncope and emesis in the absence of electrographic evidence of seizures, radiographic evidence of hydrocephalus, or elevated ICP...
September 20, 2017: Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28924127/recurrent-painful-ophthalmoplegic-neuropathy-with-residual-mydriasis-in-an-adult-should-it-be-classified-as-ophthalmoplegic-migraine
#6
Yuya Kobayashi, Yasufumi Kondo, Kana Uchibori, Jun Tsuyuzaki
Recurrent painful ophthalmoplegic neuropathy (RPON) is a rare condition that manifests as headache and ophthalmoplegia. It typically occurs in children. Although migraine or neuropathy have been suggested as etiologies, the precise etiology remains unclear. In the International Classification of Headache Disorders 3rd edition-beta version (ICHD3β) (code 13.9), RPON was categorized into painful cranial neuropathies and other facial pains. We encountered a 48-year-old woman who had diplopia and right ptosis...
September 15, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28922886/intracranial-bypass-of-posterior-inferior-cerebellar-artery-aneurysms-indications-technical-aspects-and-clinical-outcomes
#7
David J Bonda, Mohamad Labib, Jeffrey M Katz, Rafael A Ortiz, David Chalif, Avi Setton, David J Langer, Amir R Dehdashti
BACKGROUND: For some posterior inferior cerebellar artery (PICA) aneurysms, there is no constructive endovascular or direct surgical clipping option. Intracranial bypass is an alternative to a deconstructive technique. OBJECTIVE: To evaluate the clinical features, surgical techniques, and outcome of PICA aneurysms treated with bypass and obliteration of the diseased segment. METHODS: Retrospective review of PICA aneurysms treated via intracranial bypass was performed...
October 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28922882/microsurgical-anatomy-of-the-interfascial-vein-its-significance-in-the-interfascial-dissection-of-the-pterional-approach
#8
Alvaro Campero, Pablo Ajler, Martín Paíz, Ramiro López Elizalde
BACKGROUND: The pterional approach (PA), together with its variants, is still one of the most common methods used by surgeons to reach the anterior and middle cranial base. A highly important technical detail during a PA is the preservation of the frontotemporal branch of the facial nerve, which can be achieved through an interfascial dissection. OBJECTIVE: To describe the anatomy of the interfascial vein (IFV), highlighting its recognition as a significant anatomic reference to perform an interfascial dissection (IFD)...
October 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28922880/a-side-door-to-meckel-s-cave-anatomic-feasibility-study-for-the-lateral-transorbital-approach
#9
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/28921909/first-natural-endocranial-cast-of-a-fossil-snake-cretaceous-of-patagonia-argentina
#10
Laura N Triviño, Adriana M Albino, María T Dozo, Jorge D Williams
In this study, we describe a natural endocranial cast included in a partially preserved medium-sized skull of the Upper Cretaceous South American snake Dinilysia patagonica. The endocast is composed of sedimentary filling of the cranial cavity in which the posterior brain, the vessels, the cranial nerves, and the inner ear surrounded by delicate semicircular canals, are represented. It is simple in form, with little differentiation between the three main areas (Forebrain, Midbrain and Hindbrain), and without flexures...
September 16, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28916909/-idiopathic-cranial-nerve-failure
#11
P Urban
Cranial nerve lesions require a thorough diagnostic work-up and known etiologies have to be excluded before the term idiopathic can be considered. The focus of the present review is on idiopathic peripheral facial nerve paralysis (Bell's palsy) for which this terminology has been established. For all other cranial nerve lesions the typical clinical signs, established etiologies and possible diagnostic pitfalls are discussed.
September 15, 2017: Der Nervenarzt
https://www.readbyqxmd.com/read/28914866/-extended-endoscopic-endonasal-posterior-transclival-approach-to-tumors-of-the-clival-region-and-ventral-posterior-cranial-fossa-part-1-topographic-and-anatomical-features-of-the-clivus-and-adjacent-structures
#12
A N Shkarubo, K V Koval', G F Dobrovol'skiy, M A Shkarubo, V V Karnaukhov, B A Kadashev, D N Andreev, I V Chernov, O A Gadzhieva, O Yu Aleshkina, E A Anisimova, P L Kalinin, M A Kutin, D V Fomichev, O I Sharipov, D B Ismailov, E S Selivanov
OBJECTIVE: to describe the main topographic and anatomical features of the clival region and its adjacent structures for improvement and optimization of the extended endoscopic endonasal posterior (transclival) approach for resection of tumors of the clival region and ventral posterior cranial fossa. MATERIAL AND METHODS: We performed a craniometric study of 125 human skulls and a topographic anatomical study of heads of 25 cadavers, the arterial and venous bed of which was stained with colored silicone (the staining technique was developed by the authors) to visualize bed features and individual variability...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28910888/-endoscopic-salvage-treatment-for-optic-neuropathy-caused-by-sinonasal-fibro-osseous-lesions
#13
J Deng, F H Chen, Y Y Lai, J B Shi
Objective: To summarize the surgical techniques, benefits and limitations of transnasal endoscopic resection and optic nerve decompression for patients with optic neuropathy caused by fibro-osseous lesions. Methods: Eight patients with optic neuropathy caused by fibro-osseous lesions who accepted endoscopic surgery of either resection of the lesion or decompression of optic nerve in Otorhinolaryngology Hospital, First Affiliated Hospital of Sun Yat-sen University from 2007 to 2016 were retrospectively reviewed and followed until April, 2017...
September 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28904575/facial-palsy-in-cerebral-venous-thrombosis-an-atypical-case-in-a-young-girl
#14
Ayşe Kartal
Cerebral venous thrombosis (CVT) is a rare and potentially life-threating cause of stroke. A number of etiologies and risk factors for CVT have been identified so far. These include head trauma, local and systemic infectious diseases, malignancies, autoimmune diseases, and oral contraceptive use. The most common clinical symptoms are headache and changes in consciousness. Cranial nerve palsy in CVT is uncommon, and there are very few reports of facial nerve palsy. This case report highlights an atypical manifestation in a CVT patient, who presented with peripheral facial palsy...
April 2017: Journal of Pediatric Neurosciences
https://www.readbyqxmd.com/read/28904462/clinical-spectrum-therapeutic-outcomes-and-prognostic-predictors-in-sjogren-s-syndrome-associated-neuropathy
#15
Ajith Sivadasan, Karthik Muthusamy, Bimal Patel, Rohit Ninan Benjamin, A T Prabhakar, Vivek Mathew, Sanjith Aaron, Mathew Alexander
OBJECTIVES: There are limited data regarding long-term follow-up and therapeutic outcomes in Sjogren's syndrome (SS)-associated peripheral neuropathy. In this study, we aim to study the clinical, electrophysiological spectrum and therapeutic responses among the different subtypes of SS-associated neuropathy. The predictors of suboptimal treatment response will be identified. METHODS: The study included a retrospective cohort of patients with SS-associated neuropathy between January 2012 and November 2015...
July 2017: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/28904453/hospital-based-retrospective-study-of-cryptococcal-meningitis-in-a-large-cohort-from-india
#16
Karkal Ravishankar Naik, Aralikatte Onkarappa Saroja, Darshan Kiran Doshi
BACKGROUND: Cryptococcal meningitis is an important and a fatal neuroinfection. Early diagnosis and treatment is of utmost importance in reducing morbidity and mortality. MATERIALS AND METHODS: Data of patients with laboratory-confirmed cryptococcal meningitis seen in tertiary care hospital were reviewed. Details of demographic profile, clinical data, laboratory parameters, complications, and in-hospital mortality were studied. RESULTS: Among 97 patients with cryptococcal meningitis (79 men, 18 women), 88 were HIV-positive, two were diabetic, and seven were sporadic...
July 2017: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/28904220/congenital-cranial-dysinnervation-disorders-a-literature-review
#17
Rebecca Fels
Congenital cranial dysinnervation disorders (CCDD) is a new term describing a collection of non-progressive neurogenic syndromes. Initially referred to as congenital fibrosis syndrome, it was thought that the primary problem was extraocular muscular maldevelopment. Recent advancements in genetics and neuro-radiology have now determined the initial observation of fibrotic muscles is secondary to a primary lack of innervation from deficient, absent, or misguided cranial nerves. This presentation provides an overview of the known genes and phenotypes currently recognized within the CCDD domain...
January 2017: American Orthoptic Journal
https://www.readbyqxmd.com/read/28899886/brainstem-encephalitis-and-acute-polyneuropathy-associated-with-hepatitis-e-infection
#18
Omar Jabbar Salim, Amy Davidson, Kathy Li, John Paul Leach, Craig Heath
A 59-year-old man presented with feverish illness. His Glasgow Coma Scale was 15, had reduced visual acuity in the left eye with partial left ptosis and mild left hemiparesis with an extensor left plantar. Over 48 hours, he accrued multiple cranial nerves palsies and progressed to a flaccid paralysis necessitating admission to an intensive care unit.Cerebrospinal fluid (CSF) study showed 20 lymphocytes and raised protein. Viral and bacterial PCRs were negative. Samples for Lyme, blood-borne viruses, syphilis and autoantibodies were also negative...
September 11, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28899835/successful-treatment-by-microvascular-decompression-surgery-of-a-patient-with-hemiparesis-due-to-vertebral-artery-compression-of-the-medulla-oblongata-a-case-report-and-literature-review
#19
Jibin Ren, Hongtao Sun, Yunfeng Diao, Xuegang Niu, Hang Wang, Zhengjun Wei, Fei Yuan
Little literature is available on hemiparesis caused by vascular medullary compression, which may occur as a result of dolichoectasia of the vertebrobasilar arterial system. In this paper, we report a case of vertebral artery compression of the medulla oblongata in a 67-year old woman. The patient was hypertensive and developed hemiparesis and intermittent spasms for five years, which became worsened for one year. Cranial nerve MRI showed compression of the medulla oblongata by the left vertebral artery. Motor evoked potential (MEP) examination showed abnormal conduction of MEPs of bilateral toe abductors...
September 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28894826/functional-and-histological-effects-of-chronic-neural-electrode-implantation
#20
REVIEW
Ronald Sahyouni, David T Chang, Omid Moshtaghi, Amin Mahmoodi, Hamid R Djalilian, Harrison W Lin
OBJECTIVES: Permanent injury to the cranial nerves can often result in a substantial reduction in quality of life. Novel and innovative interventions can help restore form and function in nerve paralysis, with bioelectric interfaces among the more promising of these approaches. The foreign body response is an important consideration for any bioelectric device as it influences the function and effectiveness of the implant. The purpose of this review is to describe tissue and functional effects of chronic neural implantation among the different categories of neural implants and highlight advances in peripheral and cranial nerve stimulation...
April 2017: Laryngoscope Investigative Otolaryngology
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