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https://www.readbyqxmd.com/read/29050095/-revisional-radical-mastoidectomy-surgeries-25-cases-experience
#1
L Li, J Xie, Y Liu, S S Gong
Objective: To analyze the risk factors of failure to dry ear after radical mastoidectomy and discuss key points in revisonal surgery. Methods: Clinical data of 25 patients(32 ears) with revisonal mastoidectomy were analyzed. The preoperative temporal bone CT findings, intra-operative findings, surgical procedures, postoperative operating cavities and aural abilities were recorded and analyzed. Results: All patients received preoperative temporal bone CT followed by revisonal radical mastoidectomy under microscope and general anesthesia...
October 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/29042574/size-variation-under-domestication-conservatism-in-the-inner-ear-shape-of-wolves-dogs-and-dingoes
#2
Anita V Schweizer, Renaud Lebrun, Laura A B Wilson, Loïc Costeur, Thomas Schmelzle, Marcelo R Sánchez-Villagra
A broad sample of wolves, dingoes, and domesticated dogs of different kinds and time periods was used to identify changes in size and shape of the organs of balance and hearing related to domestication and to evaluate the potential utility of uncovered patterns as markers of domestication. Using geometric morphometrics coupled with non-invasive imaging and three-dimensional reconstructions, we exposed and compared complex structures that remain largely conserved. There is no statistically significant difference in the levels of shape variation between prehistoric and modern dogs...
October 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29030893/sonic-hedgehog-antagonists-reduce-size-and-alter-patterning-of-the-frog-inner-ear
#3
Sanam Zarei, Kasra Zarei, Bernd Fritzsch, Karen L Elliott
Sonic Hedgehog (Shh) signaling plays a major role in vertebrate development, from regulation of proliferation to the patterning of various organs. In amniotes, Shh affects dorsoventral patterning in the inner ear but affects anteroposterior patterning in teleosts. Currently, it remains unknown the function of Shh in inner ear development in terms of how morphogenesis changes in the sarcopterygian/tetrapod lineage coincide with the evolution of limbs and novel auditory organs in the ear. In this study we used the tetrapod, Xenopus laevis, to test how increasing concentrations of the Shh signal pathway antagonist, Vismodegib, affects ear development...
October 14, 2017: Developmental Neurobiology
https://www.readbyqxmd.com/read/29022796/aural-exostoses-surfer-s-ear-provide-vital-fossil-evidence-of-an-aquatic-phase-in-man-s-early-evolution
#4
P H Rhys Evans, M Cameron
For over a century, otolaryngologists have recognised the condition of aural exostoses, but their significance and aetiology remains obscure, although they tend to be associated with frequent swimming and cold water immersion of the auditory canal. The fact that this condition is usually bilateral is predictable since both ears are immersed in water. However, why do exostoses only grow in swimmers and why do they grow in the deep bony meatus at two or three constant sites? Furthermore, from an evolutionary point of view, what is or was the purpose and function of these rather incongruous protrusions? In recent decades, paleoanthropological evidence has challenged ideas about early hominid evolution...
September 15, 2017: Annals of the Royal College of Surgeons of England
https://www.readbyqxmd.com/read/29021425/a-cat-with-suspected-laryngeal-metastasis-with-mucosal-irregularity-resulting-from-apocrine-salivary-gland-adenocarcinoma-in-the-head
#5
Aki Fujiwara-Igarashi, Koichi Shimizu, Masaki Michishita, Yoshihiko Yu, Yuji Hamamoto, Daisuke Hasegawa, Michio Fujita
A 16-year-old castrated male mongrel cat presented with swelling under the left pinna and a 3 -month history of voice change. Laryngeal endoscopy revealed circumferential oedema around the arytenoid cartilages and hypersecretion of saliva. Histopathological examination of the mass around the left ear canal was considered the primary lesion that originated from cutaneous apocrine adenocarcinoma or parotid gland adenocarcinoma, and it metastasized to the larynx, lung and medial retropharyngeal lymph nodes. This report provides new insights into feline laryngeal diseases which could result in laryngeal metastasis with slight mucosal irregularity alone and without obvious radiographic abnormalities...
October 11, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/29018634/detection-of-paroxysms-in-long-term-single-channel-eeg-monitoring-of-patients-with-typical-absence-seizures
#6
Troels W Kjaer, Helge B D Sorensen, Sabine Groenborg, Charlotte R Pedersen, Jonas Duun-Henriksen
Absence seizures are associated with generalized 2.5-5 Hz spike-wave discharges in the electroencephalogram (EEG). Rarely are patients, parents, or physicians aware of the duration or incidence of seizures. Six patients were monitored with a portable EEG-device over four times 24 h to evaluate how easily outpatients are monitored and how well an automatic seizure detection algorithm can identify the absences. Based on patient-specific modeling, we achieved a sensitivity of 98.4% with only 0.23 false detections per hour...
2017: IEEE Journal of Translational Engineering in Health and Medicine
https://www.readbyqxmd.com/read/29018496/surgical-treatment-of-acquired-atresia-of-the-external-auditory-ear-canal
#7
Valerie Droessaert, Robby Vanspauwen, Erwin Offeciers, Andrzej Zarowski, Joost van Dinther, Thomas Somers
Introduction  Acquired atresia of the external auditory canal is characterized by the formation of fibrous tissue in the medial part. The causes include chronic otitis externa, perforated chronic otitis media, postoperative or idiopathic healing problems. Acquired atresia presents with hearing loss and can be associated with otorrhea. Objective  We analyzed the results of surgery after six months and two years by checking (1) pre- and postoperative hearing thresholds; (2) presence of otorrhea; and (3) whether a dry and patent ear canal is achieved...
October 2017: International Archives of Otorhinolaryngology
https://www.readbyqxmd.com/read/29018494/evaluation-of-the-efficacy-and-tolerability-of-oral-ciprofloxacin-used-in-the-comprehensive-treatment-of-external-bacterial-otitis-an-observational-prospective-study
#8
Alexander Vladimirovich Gurov, Andrey Ivanovich Kriukov, Vera Yakovlevna Kunelskaya, Galina Nikolaevna Isotova, Georgiy Borisovich Shadrin, Yuliya Vladislavovna Luchsheva, Vladislav Olegovich Yakimov, Amit Garg, Shyam Prasad Akku, Namita Gupta
Introduction  Otitis Externa is common ear infection with a prevalence of 1%. Objective  The objective of this study is to evaluate the clinical and microbiological efficacy and safety profile with oral ciprofloxacin in the external bacterial otitis (EBO) management. Methods  This is a prospective observational study conducted with EBO outpatients referred to the otorhinolaryngology center in Moscow between March and August 2013. Our study included patients from two cohorts, acute external bacterial otitis (AEBO) - Group 1 - and exacerbation of chronic otitis externa (CEBO) - Group 2...
October 2017: International Archives of Otorhinolaryngology
https://www.readbyqxmd.com/read/29018492/air-and-bone-conduction-frequency-specific-auditory-brainstem-response-in-children-with-agenesis-of-the-external-auditory-canal
#9
Pricila Sleifer, Dayane Domeneghini Didoné, Ísis Bicca Keppeler, Claudine Devicari Bueno, Rudimar Dos Santos Riesgo
Introduction  The tone-evoked auditory brainstem responses (tone-ABR) enable the differential diagnosis in the evaluation of children until 12 months of age, including those with external and/or middle ear malformations. The use of auditory stimuli with frequency specificity by air and bone conduction allows characterization of hearing profile. Objective  The objective of our study was to compare the results obtained in tone-ABR by air and bone conduction in children until 12 months, with agenesis of the external auditory canal...
October 2017: International Archives of Otorhinolaryngology
https://www.readbyqxmd.com/read/28994490/computed-tomographic-findings-in-205-dogs-with-clinical-signs-compatible-with-middle-ear-disease-a-retrospective-study
#10
Audrey Belmudes, Charline Pressanti, Paul Y Barthez, Eloy Castilla-Castaño, Lionel Fabries, Marie C Cadiergues
BACKGROUND: Computed tomography (CT) is considered to be the reference method to evaluate middle ear structures. OBJECTIVES: To evaluate the presence and severity of CT changes in the middle ear and establish if any specific clinical presentations are associated with otitis media. ANIMALS: Medical records of animals referred for CT with history and clinical signs consistent with middle ear disease. METHODS: Retrospective evaluation of CT examinations of tympanic bullae performed over a six year period...
October 10, 2017: Veterinary Dermatology
https://www.readbyqxmd.com/read/28992722/the-treatment-of-pseudoaneurysms-with-flow-diverters-after-malignant-otitis-externa
#11
Tamás Németh, László Szakács, Zsolt Bella, Valéria Majoros, Pál Barzó, Erika Vörös
Background We report a case of bilateral malignant otitis externa complicated with bilateral petrous internal carotid artery pseudoaneurysms and their successful treatment with a flow diverter. Case report A 68-year-old woman with serious complications of type II diabetes mellitus had malignant otitis externa on the right side. She was treated with combined antibiotic therapy and underwent mastoidectomy for mastoiditis. She presented at our hospital with acute hemorrhage from the right external auditory canal...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28984808/cochlear-dysfunction-is-not-common-in-human-meningioma-of-the-internal-auditory-canal
#12
Lukas D Landegger, Jong D Lee, Fred H Linthicum, Konstantina M Stankovic
HYPOTHESIS: Cochlear dysfunction is not common in human meningioma of the internal auditory canal. BACKGROUND: Meningiomas arising from the cerebellopontine angle and internal auditory canal typically cause hearing loss. Cochlear dysfunction is known to contribute to sensorineural hearing loss induced by vestibular schwannoma, the most common tumor of the internal auditory canal. Detailed cochlear histopathology in meningioma has not been reported. METHODS: Retrospective analysis of cochlear histopathology in five unoperated and five operated meningiomas of the internal auditory canal identified after screening human temporal bone collections from three academic medical centers...
October 4, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28980586/-the-importance-of-vestibular-evoked-myogenic-potentials-for-the-assessment-of-the-otolith-function-in-the-patients-presenting-with-benign-paroxysmal-positional-vertigo
#13
N L Kunel'skaya, E V Baybakova, A L Guseva, M A Chugunova, E A Manaenkova
The objective of the present study was to evaluate the otolith function in the patients presenting with idiopathic benign paroxysmal positional vertigo (pBPPV) attributable to the occlusion of the posterior semicircular canal (PSCC) of the inner ear with the use of vestibular evoked myogenic potentials (VEMP). Cervical (cVEMP) and ocular VEMP (oVEMP) were measured in 34 patients with idiopathic pBPPV before and 7 days after the treatment by means of reposition maneuvers. The results of the repeated Dix-Hallpike test performed 7 days after the repositioning maneuver were negative in 27 patients and positive in 7 patients...
2017: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/28977813/-hearing-rehabilitation-with-the-cochlea-implant-following-translabyrinthine-cpa-tumor-removal
#14
Jörg Schipper, Julia Kristin, Simone Volpert, Thomas Klenzner
We present a quality analysis of 10 patients with an individual treatment trial for a simultaneous or consecutive cochlea implantation after translabyrinthine removal of a neurinoma at the cerebellopontine angle. The results show that most of the patients benefit from the cochlea implantation after unilateral deafness. Through a careful surgical preparation technique at the inner ear canal and its surroundings the morphological and functional integrity of the neurovascular structures can be guaranteed.
October 4, 2017: Laryngo- Rhino- Otologie
https://www.readbyqxmd.com/read/28977031/sudden-sensorineural-hearing-loss-associated-with-inner-ear-lesions-detected-by-magnetic-resonance-imaging
#15
Jiwon Cho, Hanjae Cheon, Jung Hye Park, Hyo-Jeong Lee, Hyung-Jong Kim, Hyo Geun Choi, Ja-Won Koo, Sung Kwang Hong
Although recent advances in magnetic resonance imaging (MRI) techniques have contributed to the detection of tiny lesions in the internal auditory canal (IAC) that may be responsible for sudden sensorineural hearing loss (SSNHL), there have been relatively few studies on the clinical characteristics of intra-labyrinthine hemorrhage (ILH) and labyrinthitis versus those regarding IAC tumors. Our purpose was to investigate the frequency of those IAC lesions on MRI and their clinical characteristics. Initial MRIs of 200 patients with SSNHL (93 men, 107 women; mean age = 48...
2017: PloS One
https://www.readbyqxmd.com/read/28972472/identifying-otosclerosis-with-aural-acoustical-tests-of-absorbance-group-delay-acoustic-reflex-threshold-and-otoacoustic-emissions
#16
Douglas H Keefe, Kelly L Archer, Kendra K Schmid, Denis F Fitzpatrick, M Patrick Feeney, Lisa L Hunter
BACKGROUND: Otosclerosis is a progressive middle-ear disease that affects conductive transmission through the middle ear. Ear-canal acoustic tests may be useful in the diagnosis of conductive disorders. This study addressed the degree to which results from a battery of ear-canal tests, which include wideband reflectance, acoustic stapedius muscle reflex threshold (ASRT), and transient evoked otoacoustic emissions (TEOAEs), were effective in quantifying a risk of otosclerosis and in evaluating middle-ear function in ears after surgical intervention for otosclerosis...
October 2017: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/28969167/advancing-cholesteatoma-secondary-to-acquired-atresia-of-the-external-auditory-canal-clinical-perspectives
#17
Arijit Jotdar, Mainak Dutta, Sohag Kundu, Subrata Mukhopadhyay
Acquired atresia of External Auditory Canal (EAC) is seldom encountered in routine otolaryngology practice. Apart from resulting in moderate-to-severe conductive hearing impairment, it is a potentially dreaded condition which might lead to canal cholesteatoma. Suspected to develop as a consequence of a pre-existing chronic otitis externa/media, the EAC atresia leads to proximal (medial) accumulation of desquamated epithelium and denatured keratin (the canal cholesteatoma) that further leads to aggravation of the chronic otitis, thereby initiating a vicious cycle...
August 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28966004/schwannoma-of-external-auditory-canal
#18
Dong Hoon Lee, Kyung Hwa Lee, Tae Mi Yoon, Joon Kyoo Lee, Sang Chul Lim
Schwannomas of the external auditory canal are extremely rare and only a few cases have been reported in the literature. Herein, we report a case of schwannoma of the external ear canal in a 41-year male. Clinicians should consider the possibility that the schwannoma may originate in the external auditory canal mimicking other more frequently observed lesions.
September 28, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28956143/bioactive-glass-obliteration-of-the-mastoid-significantly-improves-surgical-outcome-in-non-cholesteatomatous-chronic-otitis-media-patients
#19
Joris Vos, Pieter de Vey Mestdagh, David Colnot, Pepijn Borggreven, Claudia Orelio, Jasper Quak
This retrospective follow-up study evaluates the efficacy and safety of bioactive glass (BAG) S53P4 when applied as filler material in mastoid obliteration surgery performed on non-cholesteatomatous chronic otitis media (NC-COM) patients with chronically discharging ears despite conservative therapy. 94 Patients (96 ears) were included. Patients underwent either intact canal wall (ICW) or canal wall down (CWD) mastoid surgery between 2005 and 2015. The intervention group comprised 23 patients (23 ears) who were treated with additional mastoid obliteration using BAG S53P4; the remaining 71 patients (73 ears) were considered controls...
September 27, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28955674/vestibulo-ocular-reflex-abnormalities-in-posterior-semicircular-canal-benign-paroxysmal-positional-vertigo-a-pilot-study
#20
Tayyebe Fallahnezhad, Mansoureh Adel Ghahraman, Saeid Farahani, Reza Hoseinabadi, Shohreh Jalaie
INTRODUCTION: Benign paroxysmal positional vertigo (BPPV), involving the semicircular canals, is one of the most common diseases of the inner ear. The video head impulse test (vHIT) is a new test that examines the function of the canals. This study aimed to investigate the vestibulo-ocular reflex (VOR) gain, gain asymmetry and saccades after stimulating all six canals in patients definitively diagnosed with posterior semicircular canal BPPV (PSC-BPPV). MATERIALS AND METHODS: Twenty-nine unilateral PSC-BPPV patients with normal oculographic and caloric results were enrolled in this study...
September 2017: Iranian Journal of Otorhinolaryngology
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