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https://www.readbyqxmd.com/read/28437877/in-reply-to-prognostic-significance-of-resection-degree-in%C3%A2-skull-base-chordoma-a-systematic-review-and-meta-analysis
#1
Yixuan Zhai, Jiwei Bai, Shuai Wang, Mingxuan Li, Yazhuo Zhang
No abstract text is available yet for this article.
April 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28437876/prognostic-significance-of-resection-degree-in-skull-base-chordoma-a-systematic-review-and-meta-analysis
#2
Ming-Xiang Zou, Jing Li, Xiao-Bin Wang, Guo-Hua Lv
No abstract text is available yet for this article.
April 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28435118/transoral-intracranial-injury-via-middle-skull-base-by-a-blunt-chopstick-in-a-child
#3
Thiti Samuthrat, Ke Ye, Ying Tong
BACKGROUND: Transoral penetrating injury from a blunt-tipped chopstick is unusual and should be promptly dealt with since it is associated with high morbidity and mortality. CASE DESCRIPTION: We report a peculiar case of a 2-year-old girl who suffered from a transoral penetrating brain injury after falling onto a bamboo chopstick, which penetrated through the hard palate and eventually led to middle skull base fracture as well as temporal lobe laceration and contusion...
April 20, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28434953/the-multi-scope-technique-for-microvascular-decompression
#4
Yuichi Nagata, Tadashi Watanabe, Tetsuya Nagatani, Kazuhito Takeuchi, Jonsu Chu, Toshihiko Wakabayashi
BACKGROUND: The performance of endoscopic surgery has rapidly become widespread in neurosurgery in recent years. Endoscopy can offer close and panoramic surgical views with fine illumination, even in the deep intracranial area. However, it also has the following serious drawback: an intracranial blind area between the field lens of the endoscope and the site of the dural opening. This blind area cannot be viewed on the endoscopic monitor, and several surgical complications, including accidental intracranial neurovascular structural injury, can occur in this area...
April 18, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28433980/a-paediatric-case-of-bilateral-mandibular-condyle-fracture-presenting-with-bloody-otorrhoea-following-trauma
#5
Yat Chun Chan, Kwan Leong Au-Yeung
A 7-year-old boy presented to the emergency department with bilateral bloody otorrhoea after falling from his scooter. Skull base fracture was suspected. CT showed no evidence of skull base fracture but bilateral mandibular condyle and external acoustic canals fractures. We report this case to illustrate a rare possibility of bilateral external acoustic canal fracture associated with condylar fracture in trauma patients presented with bloody otorrhoea.
April 22, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28433849/clinical-significance-of-long-term-follow-up-of-children-with-posttraumatic-skull-base-fracture
#6
Sharon Leibu, Guy Rosenthal, Yigal Shoshan, Mony Benifla
BACKGROUND: To assess in children with skull base fractures, incidences of cerebrospinal fluid (CSF) leak, meningitis, and the need for prophylactic antibiotics, anti-pneumococcal vaccination, and surgical interventions. METHODS: We reviewed the records of children with skull base fractures who were admitted to our tertiary care center during 2009-2014. RESULTS: 196 children (153 male) were hospitalized with skull base fractures, aged 1 month to 18 years (mean 6 ± 4 years)...
April 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28433840/the-unusual-presentation-of-a-myxoma-within-the-sphenoid-sinus-case-report-and-review-of-the-literature
#7
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 female was diagnosed with an incidental sphenoid sinus tumor and left sphenoid wing meningioma during work-up 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 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28432450/genetic-aberrations-and-molecular-biology-of-skull-base-chordoma-and-chondrosarcoma
#8
Yohei Kitamura, Hikaru Sasaki, Kazunari Yoshida
Chordomas and chondrosarcomas are two major malignant bone neoplasms located at the skull base. These tumors are rarely metastatic, but can be locally invasive and resistant to conventional chemotherapies and radiotherapies. Accordingly, therapeutic approaches for the treatment of these tumors can be difficult. Additionally, their location at the skull base makes them problematic. Although accurate diagnosis of these tumors is important because of their distinct prognoses, distinguishing between these tumor types is difficult due to overlapping radiological and histopathological findings...
April 21, 2017: Brain Tumor Pathology
https://www.readbyqxmd.com/read/28428207/mr-imaging-grading-system-for-skull-base-chordoma
#9
K Tian, L Wang, J Ma, K Wang, D Li, J Du, G Jia, Z Wu, J Zhang
BACKGROUND AND PURPOSE: Skull base chordoma has been widely studied in recent years, however, imaging characteristics of this tumor have not been well elaborated. The purpose of this study was to establish an MR imaging grading system for skull base chordoma. MATERIALS AND METHODS: In this study, 156 patients with skull base chordomas were retrospectively assessed. Tumor-to-pons signal intensity ratios were calculated from pretreatment MR images RT1 (ratio of tumor to pons signal intensity in T1 FLAIR sequence), RT2 (ratio of tumor to pons signal intensity in T2 sequence) and REN (ratio of tumor to pons signal intensity in enhanced T1 FLAIR sequence), and significant ratios for overall survival and progression-free survival were selected to establish a grading system...
April 20, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28424012/internal-carotid-artery-agenesis-a-case-report-and-review-of-literature
#10
Shuo Li, Kusum Hooda, Nishant Gupta, Yogesh Kumar
Congenital agenesis of the internal carotid artery is a very rare anomaly. Intracranial circulation in the involved internal carotid artery territory is maintained by collateral circulation from the contralateral internal carotid artery through the anterior communicating artery and from the vertebrobasilar system through the posterior communicating artery. Usually, patients with internal carotid artery agenesis are asymptomatic due to collateral circulation, but they may present with headache, seizures, or transient ischemic attack...
April 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28422806/improvement-of-image-quality-in-unenhanced-dual-layer-ct-of-the-head-using-virtual-monoenergetic-images-compared-with-polyenergetic-single-energy-ct
#11
Victor Neuhaus, Nuran Abdullayev, Nils Große Hokamp, Gregor Pahn, Christoph Kabbasch, Anastasios Mpotsaris, David Maintz, Jan Borggrefe
OBJECTIVES: The aims of this study were to compare virtual monoenergetic images and polyenergetic images reconstructed from unenhanced dual-layer detector computed tomography (DLCT) of the head and to determine kiloelectron volt levels that optimize image quality, particularly the gray-white matter contrast, and reduce beam hardening artifacts caused by the skull. MATERIALS AND METHODS: Institutional review board approval was obtained. Forty patients that received DLCT were included in this retrospective study; of these patients, 22 were women and 18 were men...
April 19, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28419750/the-effectiveness-of-virtual-and-augmented-reality-in-health-sciences-and-medical-anatomy
#12
Christian Moro, Zane Štromberga, Athanasios Raikos, Allan Stirling
Although cadavers constitute the gold standard for teaching anatomy to medical and health science students, there are substantial financial, ethical, and supervisory constraints on their use. In addition, although anatomy remains one of the fundamental areas of medical education, universities have decreased the hours allocated to teaching gross anatomy in favor of applied clinical work. The release of virtual (VR) and augmented reality (AR) devices allows learning to occur through hands-on immersive experiences...
April 17, 2017: Anatomical Sciences Education
https://www.readbyqxmd.com/read/28418817/virtual-mapping-of-the-frontal-recess-guiding-safe-and-efficient-frontal-sinus-surgery
#13
Neil S Patel, Amy C Dearking, Erin K O'Brien, John F Pallanch
Objective To define relationships between the frontal sinus opening, ostia of other frontal recess cells, and endoscopic landmarks and to develop a clinically useful framework to guide frontal sinus surgery. Study Design Retrospective review. Setting Tertiary care academic referral center. Methods Adult patients with computed tomography (CT) without sinonasal pathology were included. Virtual endoscopy (using OsiriX) and corresponding CT reconstructions were used to identify all visible ostia in the frontal recess and characterize their positions in spaces between the uncinate/agger nasi (U), bulla ethmoidalis (EB), and middle turbinate (MT)...
April 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28413767/unique-image-characteristics-of-an-occipital-primary-chondroblastic-osteosarcoma-a-rare-case-report-and-a-brief-literature-review
#14
Xin He, Tingting Yuan, Yuzhu Yan, Jinlu Yu, Dan Tong
Primary osteosarcomas of the skull and skull base are rare and comprise < 2% of all skull tumors. In head and neck osteosarcomas, the chondroblastic subtype occurs most frequently, which has an exceedingly poor outcome, but its image characteristic remains unknown. Herein, we report a case in the right occipital bone of the skull base and the unique characteristics of image. Pathologic examination of the surgical specimens led to the diagnosis of chondroblastic osteosarcomas. We believe those image characteristics can improve the understanding of skull chondroblastic osteosarcoma and the preoperative diagnosis...
April 2017: Journal of Neurological Surgery Reports
https://www.readbyqxmd.com/read/28413719/intra-specific-variation-and-allometry-of-the-skull-of-late-cretaceous-side-necked-turtle-bauruemys-elegans-pleurodira-podocnemididae-and-how-to-deal-with-morphometric-data-in-fossil-vertebrates
#15
Thiago F Mariani, Pedro S R Romano
BACKGROUND: Previous quantitative studies on Bauruemys elegans (Suárez, 1969) shell variation, as well as the taphonomic interpretation of its type locality, have suggested that all specimens collected in this locality may have belonged to the same population. We rely on this hypothesis in a morphometric study of the skull. Also, we tentatively assessed the eating preference habits differentiation that might be explained as due to ontogenetic changes. METHODS: We carried out an ANOVA testing 29 linear measurements from 21 skulls of B...
2017: PeerJ
https://www.readbyqxmd.com/read/28413552/trigeminocardiac-reflex-preceding-development-of-postoperative-superior-orbital-fissure-syndrome
#16
Rudrashish Haldar, Prakhar Gyanesh, Arun Srivastava, Guru Prasad Bettaswamy
The superior orbital fissure syndrome (SOFS) is a rare condition presenting as painful unilateral opthalmoplegia, ptosis, pupillary dilatation and anesthesia of the upper eyelid and forehead. It has been described after facial trauma. Other etiologies include infections, tumors or spontaneous hemorrhages in the retro-orbital space. Occurrence of SOFS after surgery in the skull base has not been described before. We recently encountered a case where a young female developed SOFS following surgery for cerebrospinal fluid (CSF) rhinorrhea...
January 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28413546/solitary-plasmacytoma-of-temporal-bone-a-rare-case-report
#17
Ritesh Kumar, Narendra Kumar, Sandeep Mohindro, B D Radotra
Solitary plasmacytoma of base of skull is a rare disease. It presents with headache, swelling, and other vague symptoms. Systemic work-up to rule out multiple myeloma is necessary. Radiotherapy is the treatment of choice. We, here, present a case of solitary plasmacytoma of base of skull in right temporal bone in a 50-year-old female treated with surgery and radiotherapy.
January 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28413541/clival-giant-cell-tumor-a-rare-case-report-and-review-of-literature-with-respect-to-current-line-of-management
#18
Mohana Rao Patibandla, Amit Kumar Thotakura, Marabathina Nageswara Rao, Gokul Chowdary Addagada, Manisha Chowdary Nukavarapu, Manas Kumar Panigrahi, Shantiveer Uppin, Sundaram Challa, Srinivas Dandamudi
Giant-cell tumor (GCT) involving the skull base is rare. Sphenoid bone is the most commonly involved bone followed by petrous temporal bone. Histopathology and radiological features of these lesions are similar to GCT involving bone elsewhere. Unlike other sites, skull base is not an ideal site for the radical surgery. Hence adjuvant treatment has pivotal role. Radiation therapy with intensity-modulated radiation therapy, stereotactic radiosurgery or chemotherapy with adriamycin are promising as described in some case reports...
January 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28412983/piezoelectric-technology-in-otolaryngology-and-head-and-neck-surgery-a-review
#19
C Meller, T E Havas
BACKGROUND: Piezoelectric technology has existed for many years as a surgical tool for precise removal of soft tissue and bone. The existing literature regarding its use specifically for otolaryngology, and head and neck surgery was reviewed. METHODS: The databases Medline, the Cochrane Central Register of Controlled Trials, PubMed, Embase and Cambridge Scientific Abstracts were searched. Studies were selected and reviewed based on relevance. RESULTS: Sixty studies were identified and examined for evidence of benefits and disadvantages of piezoelectric surgery and its application in otolaryngology...
April 17, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28412879/quantitative-analysis-of-transnasal-anterior-skull-base-approach-report-of-technology-for-intraoperative-assessment-of-instrument-motion
#20
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
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