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https://www.readbyqxmd.com/read/28929078/primary-ewing-s-sarcoma-of-the-temporal-bone-a-rare-case-report-and-literature-review
#1
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/28929059/incidence-of-facial-nerve-canal-dehiscence-in-primary-and-revision-cholesteatoma-surgery
#2
Mohammad Faramarzi, Sareh Roosta
The aim of this retrospective study was to determine the incidence of facial canal dehiscence (FCD) in primary and revision cholesteatoma surgery in a tertiary referral center. Moreover, our second goal was to identify association between FCD and other intra-operative pathological findings in a group of patients with cholesteatoma surgery. Inclusion criteria were primary and revision canal wall up and canal wall down tympanomastoidectomy in patients who suffers from chronic otitis media (COM) with cholesteatoma...
September 2017: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/28924294/meatal-obstruction-following-canal-wall-down-mastoidectomy
#3
Nazim Bozan, Ufuk Duzenli, Pinar Kundi, Mahfuz Turan, Ahmet Faruk Kiroglu
Chronic otitis media (COM) is completely treated with a single procedure in most patients but may require multiple surgeries in some cases. The main goals of open cavity mastoidectomy are to completely eradicate the disease, create a large enough meatus for examination and mastoid air cells, and provide a self-cleaning epithelized dry cavity, and achieve maximum hearing. In this report, we present a very rare case of COM who underwent revision mastoidectomy in our clinic due to meatal obstruction in the right ear, total sensorineural hearing loss, and pain and tenderness in the postauricular region...
September 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28918649/characterizing-verified-head-impacts-in-high-school-girls-lacrosse
#4
Shane V Caswell, Andrew E Lincoln, Hannah Stone, Patricia Kelshaw, Margot Putukian, Lisa Hepburn, Michael Higgins, Nelson Cortes
BACKGROUND: Girls' high school lacrosse players have higher rates of head and facial injuries than boys. Research indicates that these injuries are caused by stick, player, and ball contacts. Yet, no studies have characterized head impacts in girls' high school lacrosse. PURPOSE: To characterize girls' high school lacrosse game-related impacts by frequency, magnitude, mechanism, player position, and game situation. STUDY DESIGN: Descriptive epidemiology study...
September 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28915949/assessment-of-surgical-skills-and-competency
#5
REVIEW
Nasir I Bhatti
Evaluation of surgical skills and competency are important aspects of the medical education process. Measurable and reproducible methods of assessment with objective feedback are essential components of surgical training. Objective Structured Assessment of Technical Skills (OSATS) is widely used across the medical specialties and otolaryngology-specific tools have been developed and validated for sinus and mastoid surgery. Although assessment of surgical skills can be time-consuming and requires human and financial resources, new evaluation methods and emerging technology may alleviate these barriers while also improving data collection practices...
October 2017: Otolaryngologic Clinics of North America
https://www.readbyqxmd.com/read/28904823/a-novel-drainage-approach-in-patients-with-cholesterol-granuloma-from-petrous-apex-to-mastoid-air-cell
#6
Saeed Banaama, Robert Stokroos, Youssef Yakkioui, Jacobus van Overbeeke, Yasin Temel
BACKGROUND: Cholesterol granulomas (CG) of the petrous apex (CGPA) are benign lesions that have high recurrence rates after surgical intervention. We describe the use of a robust silicon drain between the petrous apex and mastoid air cells to allow constant aeration of the lesion for preventing recurrence. CASE DESCRIPTION: A retrospective analysis was performed using the data of four patients treated at the Maastricht University Medical Centre between 2014 and 2016...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28900565/comparison-of-a-head-mounted-impact-measurement-device-to-the-hybrid-iii-anthropomorphic-testing-device-in-a-controlled-laboratory-setting
#7
Eric Schussler, David Stark, John H Bolte, Yun Seok Kang, James A Onate
BACKGROUND: Reports estimate that 1.6 to 3.8 million cases of concussion occur in sports and recreation each year in the United States. Despite continued efforts to reduce the occurrence of concussion, the rate of diagnosis continues to increase. The mechanisms of concussion are thought to involve linear and rotational head accelerations and velocities. One method of quantifying the kinematics experienced during sport participation is to place measurement devices into the athlete's helmet or directly on the athlete's head...
August 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28891871/bone-density-development-of-the-temporal-bone-assessed-by-computed-tomography
#8
Kuniyuki Takahashi, Yuka Morita, Shinsuke Ohshima, Shuji Izumi, Yamato Kubota, Arata Horii
HYPOTHESIS: The temporal bone shows regional differences in bone development. BACKGROUND: The spreading pattern of acute mastoiditis shows age-related differences. In infants, it spreads laterally and causes retroauricular swelling, whereas in older children, it tends to spread medially and causes intracranial complications. We hypothesized that bone maturation may influence the spreading pattern of acute mastoiditis. METHODS: Eighty participants with normal hearing, aged 3 months to 42 years, participated in this study...
September 7, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28879826/management-of-paediatric-acute-mastoiditis-systematic-review
#9
R Loh, M Phua, C-K L Shaw
BACKGROUND: Acute mastoiditis remains the commonest intratemporal complication of otitis media in the paediatric population. There has been a lack of consensus regarding the diagnosis and management of acute mastoiditis, resulting in considerable disparity in conservative and surgical management. OBJECTIVES: To review the current literature, proposing recommendations for the management of paediatric acute mastoiditis and appraising the treatment outcomes. METHOD: A systematic review was conducted using PubMed, Web of Science and Cochrane Library databases...
September 7, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28875515/osteogenesis-for-postoperative-temporal-bone-defects-using-human-ear-adipose-derived-stromal-cells-and-tissue-engineering-an-animal-model-study
#10
Yeon Ju Kim, Seung Gu Park, Beomyong Shin, Jangho Kim, Seung Won Kim, Oak-Sung Choo, Xiang Yun Yin, Byoung Hyun Min, Yun-Hoon Choung
Mastoidectomy, the removal of infected mastoid bones, is a common surgical procedure for the treatment of chronic otitis media. Persistent and recurrent otorrhea and accumulation of keratin debris following open cavity mastoidectomy are still bothersome issues for both patients and otologists. In this study, we used human ear adipose-derived stromal cells (hEASCs) in combination with polycaprolactone (PCL) scaffolds and osteogenic differentiation medium (ODM) to regenerate temporal bone defects. The hEASCs showed stem cell phenotypes, and these characteristics were maintained up to passage 5...
September 5, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28867651/effects-of-cavity-reconstruction-on-morbidity-and-quality-of-life-after-canal-wall-down-tympanomastoidectomy
#11
Sinan Uluyol, Omer Ugur, Ilker Burak Arslan, Ozlem Yagiz, Murat Gumussoy, Ibrahim Cukurova
INTRODUCTION: Canal wall down (CWD) tympanomastoidectomy is commonly used to treat advanced chronic otitis media or cholesteatoma. The advantages of CWD mastoidectomy are excellent exposure for disease eradication and postoperative control of residual disease; its disadvantages include the accumulation of debris requiring life-long otological maintenance and cleaning, continuous ear drainage, fungal cavity infections, and the occurrence of dizziness and vertigo by changing temperature or pressure...
August 19, 2017: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28864559/cerebellar-abscesses-infective-endocarditis-and-bacteraemia-due-to-a-rare-pathogen-streptococcus-constellatus
#12
Rafael García Carretero
Intracranial infections may result from contiguity, such as mastoiditis or acute otitis media, or from haematogenous dissemination from an infectious source. Streptococcus constellatus, a coccus from the normal genital, oral and gastrointestinal flora, has a tendency to form abscesses, but not to cause infective endocarditis (IE). Also, S. constellatus is an extremely rare causative agent of brain abscess. We report the case of a woman with a colorectal tumour who presented with IE and cerebellar abscesses due to a S...
September 1, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28860963/in-situ-probe-microphone-measurement-for-testing-the-direct-acoustical-cochlear-stimulator
#13
Christof Stieger, Yasser H Alnufaily, Claudia Candreia, Marco D Caversaccio, Andreas M Arnold
Hypothesis: Acoustical measurements can be used for functional control of a direct acoustic cochlear stimulator (DACS). Background: The DACS is a recently released active hearing implant that works on the principle of a conventional piston prosthesis driven by the rod of an electromagnetic actuator. An inherent part of the DACS actuator is a thin titanium diaphragm that allows for movement of the stimulation rod while hermetically sealing the housing. In addition to mechanical stimulation, the actuator emits sound into the mastoid cavity because of the motion of the diaphragm...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28860638/age-related-processing-delay-reveals-cause-of-apparent-sensory-excitability-following-auditory-stimulation
#14
Márta Volosin, Zsófia Anna Gaál, János Horváth
When background auditory events lead to enhanced auditory event-related potentials (ERPs) for closely following sounds, this is generally interpreted as a transient increase in the responsiveness of the auditory system. We measured ERPs elicited by irrelevant probes (gaps in a continuous tone) at several time-points following rare auditory events (pitch glides) in younger and older adults, who watched movies during stimulation. Fitting previous results, in younger adults, gaps elicited increasing N1 auditory ERPs with decreasing glide-gap separation...
August 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28841670/a-biomechanical-analysis-of-the-roundhouse-kicking-technique-of-expert-practitioners-a-comparison-between-the-martial-arts-disciplines-of-muay-thai-karate-and-taekwondo
#15
Colin J Gavagan, Mark G L Sayers
The purpose of this study was first, to determine whether there were differences in the roundhouse kicking leg kinematics performed by highly skilled Muay Thai, Karate and Taekwondo practitioners (n = 8 per group). Next, analysis aimed to identify the kinematic determinants of effective roundhouse kicking performance. Three-dimensional (3D) lower limb kinematics were recorded using a nine camera infra-red motion capture system (500 Hz) during three maximal roundhouse kicks. Impact forces were recorded using a strain gauge (1000 Hz) attached to a kicking pad positioned at the height of each participant's mastoid process...
2017: PloS One
https://www.readbyqxmd.com/read/28835048/-the-study-of-hearing-loss-after-microvascular-decompression-for-hemifacial-spasm
#16
Y Z Xing, X J Wang, Q H Liang
Objective: To compare the difference of hearing loss after microvascular decompression for hemifacial spasm between control and experimental groups, and to explore the possible causes. Methods: A retrospective analysis including 443 patients was performed, including 203 cases of group A (before the operation was improved) and 240 cases of group B (after the operation was improved). Chi-square test was used to compare the rate of hearing loss. Results: There were 18(8.9%) cases with postoperative hearing loss in group A, including 9 cases of conductive hearing loss and 9 cases of sensorineural hearing loss...
August 15, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28830738/mastoid-epidermoid-tumor-and-associated-dural-arteriovenous-fistula-with-venous-sinus-occlusion
#17
Jang W Yoon, Youssef J Hamade, Ramon Navarro, Benjamin L Brown, Larry Lundy, Rabih G Tawk
BACKGROUND: Dural arteriovenous fistula (DAVF) is an abnormal vascular connection between arterial and venous channels within dura mater. Although DAVFs have been linked to other types of intracranial tumors, this is the first case reporting the association between DAVF and an epidermoid tumor. CASE DESCRIPTION: A middle aged patient with chronic headache presented with Borden type II DAVF draining into the right transverse sigmoid junction, and was also found to have an epidermoid tumor over the right mastoid...
August 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28828536/mdct-of-the-temporal-bone-and-audiological-findings-of-pediatric-acquired-cholesteatoma
#18
Asli Tanrivermis Sayit, Dilek Saglam, Hediye Pinar Gunbey, Mustafa Tastan, Cetin Celenk
Cholesteatoma is a benign epithelial lesion affecting the middle ear and/or mastoid process, causing otorrhea and hearing loss. Here, we retrospectively evaluated the temporal multidetector computed tomography and audiological findings of acquired cholesteatoma in children. Forty-three patients younger than 18 years old with middle ear acquired cholesteatoma were evaluated with regard to their clinical symptoms, temporal multidetector computed tomography findings, and audiometry results. The multidetector computed tomography findings were classified according to the site-ossicle-complication classification, and the relationships between the clinical, radiological, and audiological findings were evaluated...
August 21, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28807061/the-incidence-of-hyperthermia-during-cochlear-implant-surgery-in-children
#19
A Schwartz, D Kaplan, V Rosenzweig, M Klein, B F Gruenbaum, S E Gruenbaum, M Boyko, A Zlotnik, E Brotfain
BACKGROUND: Inadvertent hyperthermia during anaesthesia is a rare but life-threatening complication. We have encountered several cases of severe hyperthermia in paediatric patients undergoing anaesthesia for cochlear implantation. METHODS: This study aimed to describe the clinical characteristics of children who developed hyperthermia while undergoing cochlear implantation, and to explore possible mechanisms and predisposing factors. The anaesthetic charts of all patients aged under 18 years who underwent cochlear implantation, or mastoid or ophthalmic surgery, between 1 January 2006 and 31 December 2009, at Soroka Medical Center in Beer Sheva, Israel, were reviewed...
August 15, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28803710/intrathecal-2-hydroxypropyl-%C3%AE-cyclodextrin-decreases-neurological-disease-progression-in-niemann-pick-disease-type-c1-a-non-randomised-open-label-phase-1-2-trial
#20
Daniel S Ory, Elizabeth A Ottinger, Nicole Yanjanin Farhat, Kelly A King, Xuntian Jiang, Lisa Weissfeld, Elizabeth Berry-Kravis, Cristin D Davidson, Simona Bianconi, Lee Ann Keener, Ravichandran Rao, Ariane Soldatos, Rohini Sidhu, Kimberly A Walters, Xin Xu, Audrey Thurm, Beth Solomon, William J Pavan, Bernardus N Machielse, Mark Kao, Steven A Silber, John C McKew, Carmen C Brewer, Charles H Vite, Steven U Walkley, Christopher P Austin, Forbes D Porter
BACKGROUND: Niemann-Pick disease, type C1 (NPC1) is a lysosomal storage disorder characterised by progressive neurodegeneration. In preclinical testing, 2-hydroxypropyl-β-cyclodextrins (HPβCD) significantly delayed cerebellar Purkinje cell loss, slowed progression of neurological manifestations, and increased lifespan in mouse and cat models of NPC1. The aim of this study was to assess the safety and efficacy of lumbar intrathecal HPβCD. METHODS: In this open-label, dose-escalation phase 1-2a study, we gave monthly intrathecal HPβCD to participants with NPC1 with neurological manifestation at the National Institutes of Health (NIH), Bethesda, MD, USA...
August 10, 2017: Lancet
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