56 research outputs found

    Accidental Removal of a Carotid Endovascular Stent during Oropharyngeal Mass Biopsy

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    A 54-year-old male patient, with a history of a right mandibular adenocarcinoma, previously excised, and treated with post operative chemo- and radio-therapy, presented with a right oropharyngeal necrotic mass of several months duration. His history is pertinent for a right internal carotid endovascular stenting 2 years prior to presentation. During biopsy of his oropharyngeal lesion, a specimen of tissue was retrieved, with the carotid stent within. There was no bleeding. To the best of our knowledge, there is no such case reported in the literature. We present this case as a reminder on the importance and risks of radiation-induced necrosis and its distortion of the surrounding anatomy, especially in the presence of foreign bodies or protheses

    Signs of spatial neglect in unilateral peripheral vestibulopathy

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    Background and purpose In this study, the question of whether egocentric representation of space is impaired in chronic unilateral vestibulopathies was examined. The objective was to test current theories attributing a predominant role to vestibular afferents in spatial cognition and to assess whether representational neglect signs are common in peripheral vestibular loss. Methods The subjective straight-ahead (SSA) direction was investigated using a horizontal rod allowing the translation and rotation components of the body midline representation to be dissociated in 21 patients with unilateral vestibular loss (right, 13; left, eight) and in 12 healthy controls. Results Compared to the controls, the patients with unilateral vestibulopathy showed a translation bias of their SSA, without rotation bias. The translation bias was not lateralized towards the lesioned side as typically found for biases reported after unilateral vestibular loss. Rather, the SSA bias was rightward whatever the side of the vestibular loss. The translation bias correlated with the vestibular loss, as measured by caloric response and vestibulo-ocular reflex gain, but not with the subjective visual vertical or the residual spontaneous nystagmus. Conclusion The present data suggest that the dysfunctions of neural networks involved in egocentred and allocentred representations of space are differentially compensated for in unilateral vestibular defective patients. In particular, they suggest that asymmetrical vestibular inputs to cortical regions lead to representational spatial disturbances as does defective cortical processing of vestibular inputs in spatial neglect after right hemisphere stroke. They also highlight the predominant role of symmetrical and unaltered vestibular inputs in spatial cognition

    Projet de Convention relative au statut international des déplacés environnementaux

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    12 pagesInternational audienceTexte intégral du Projet de Convention relative au statut international des déplacés environnementaux élaboré en 2008 à l'Université de Limoges (CRIDEAU-CRDP-OMIJ-CIDCE

    Les conflits neuro-vasculaires du nerf cochléo-vestibulaire

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    Introduction: dans le syndrome de compression neuro-vasculaire du nerf cochlĂ©o-vestibulaire, les symptĂŽmes sont attribuĂ©s Ă  une irritation des contingents cochlĂ©aire et vestibulaire. Ce syndrome est controversĂ© actuellement. Son existence est dĂ©duit par analogie avec la nĂ©vralgie du trijumeau et le spasme facial. MatĂ©riels et mĂ©thodes : Ă©tude rĂ©trospective sur 7 ans de 21 patients opĂ©rĂ©s d'un conflit vasculo-nerveux du nerf cochlĂ©o-vestibulaire. Ils prĂ©sentaient aprĂšs des acouphĂšnes dans 19 cas, des vertiges dans 16 cas et une surditĂ© dans 16 cas. Ces trois signes Ă©taient associĂ©s dans 11 cas, deux signes dans 8 cas. Les latences des PEA Ă©taient allongĂ©s dans 57% des cas, une hyporĂ©flexie vestibulaire a Ă©tĂ© retrouvĂ©e dans 81% des cas, l'IRM (sĂ©quences T2 volumique et angio-IRM)a montrĂ© un conflit vasculo-nerveux chez les 21 patients. Ils ont Ă©tĂ© opĂ©rĂ©s par voie retro-sigmoĂŻde a minima. RĂ©sultats : les vaisseaux jugĂ©s responsables lors de l'intervention Ă©taient principalement l'AICA (14 cas), puis la PICA (6 cas). Des lĂ©sions d'arachnoĂŻdite ont Ă©tĂ© retrouvĂ©es dans 4 cas. Les PEA per-opĂ©ratoires ont Ă©tĂ© rĂ©alisĂ©s dans 7 cas. Les vertiges ont Ă©tĂ© amĂ©liorĂ©s dans 69% des cas et inchangĂ©s dans 19% des cas. Les acouphĂšnes ont Ă©tĂ© amĂ©liorĂ©s dans 47% des cas et inchangĂ©s dans 26% des cas. La surditĂ© a Ă©tĂ© stabilisĂ©e dans 86% des cas. Conclusion : L'existence de consĂ©quences cliniques cochlĂ©ovestibulaires d'un conflit neuro-vasculaire semble acquise. L'intĂ©rĂȘt d'un traitement chirurgical semble prouvĂ©. Il reste Ă  expliquer les conditions physiopathologiques de sa survenue. Un monitoring per-opĂ©ratoire adaptĂ© pourrait dĂ©montrer l'amĂ©lioration neurophysiologique par la levĂ©e chirurgicale de la compression vasculaire. Les indications chirurgicales prĂ©fĂ©rentielles seront prĂ©cisĂ©es par les rĂ©sultats cliniques Ă  long terme. Une Ă©tude complĂ©mentaire expĂ©rimentale et clinique, devrait ĂȘtre envisagĂ©e pour confirmer les hypothĂšses physiopathologiques et le traitement.GRENOBLE1-BU MĂ©decine pharm. (385162101) / SudocPARIS-BIUM (751062103) / SudocSudocFranceF

    SystÚme isobarique de l'oreille moyenne (Etudes expérimentales)

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    AIX-MARSEILLE2-BU MĂ©d/Odontol. (130552103) / SudocSudocFranceF

    Paralysies faciales aprĂšs traumatisme de l'os temporal

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    Objectifs : DĂ©finir les facteurs dĂ©terminants dans la prise en charge des paralysies faciales post-traumatiques et les critĂšres de dĂ©cision entre un traitement mĂ©dical et chirurgical. MatĂ©riels et mĂ©thodes : Etude rĂ©trospective sur 10 ans de 56 paralysies faciales survenues chez 52 patients hospitalisĂ©s pour complications de traumatisme des pyramides pĂ©treuses. La sĂ©vĂ©ritĂ© de la paralysie Ă©tait objectivĂ©e par des testings musculaires. RĂ©sultats : 41 (78%) patients ont eu une tomodensitomĂ©trie cĂ©rĂ©brale, montrant 53% de lĂ©sions cĂ©rĂ©brales associĂ©es. La date d'apparition de la paralysie faciale Ă©tait connue dans 45 cas (80%). Une T.D.M. des pyramides pĂ©treuses a Ă©tĂ© rĂ©alisĂ©e dans tous les cas sauf un. Elle a mis en Ă©vidence une lĂ©sion du nerf facial dans 39 cas (68%). Tous les types de fracture ont Ă©tĂ© trouvĂ©. Le ganglion gĂ©niculĂ© Ă©tait atteint dans 23 cas (43%). L'Ă©lectromyographie a Ă©tĂ© rĂ©alisĂ©e dans 21 cas. 33 (58%) des paralysies faciales, initialement complĂštes ou s'aggravant ont Ă©tĂ© opĂ©rĂ©es. La voie d'abord a Ă©tĂ© choisie en fonction de la T.D.M. et de l'audition. La voie sus-pĂ©treuse seule ou combinĂ©e a Ă©tĂ© effectuĂ©e dans 33% des cas et la voie trans-mastoĂŻdienne Ă©largie dans 30% des cas. Les rĂ©sultats Ă©taient meilleurs pour les chirurgies rĂ©alisĂ©es dans le premier mois, avec 46% de rĂ©cupĂ©ration en grade II de House et Brackmann. Un traitement mĂ©dical a Ă©tĂ© effectuĂ© dans 35 cas (62%), efficace pour 16 des 19 paralysies faciales incomplĂštes et 6 des 16 paralysies faciales complĂštes, avec une rĂ©cupĂ©ration en grades I et II. Conclusion : La paralysie faciale est un stigmate de traumatisme crĂąnien grave. Une prise en charge prĂ©coce est gage d'une rĂ©cupĂ©ration optimale. Le traitement mĂ©dical par corticothĂ©rapie Ă  fortes doses est efficace pour la majoritĂ© des paralysies faciales incomplĂštes. Il peut l'ĂȘtre pour les paralysies complĂštes mais celles-ci requiĂšrent une chirurgie prĂ©coce dans le premier mois si elles ne rĂ©cupĂšrent pas avec le traitement mĂ©dical.GRENOBLE1-BU MĂ©decine pharm. (385162101) / SudocPARIS-BIUM (751062103) / SudocSudocFranceF

    Présentation du projet de Convention relative au statut international des déplacés environnementaux

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    6 pagesInternational audienc

    Vein versus tragal perichondrium in stapedotomy

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    OBJECTIVE: To assess, in otosclerosis surgery, whether the vein or the tragal perichondrium in stapedotomy with interposition yields the better long-term hearing outcome. STUDY DESIGN: A retrospective chart review of prospectively collected audiometric data of 452 ears. SETTING: Academic tertiary otology-neurotology referral center. PATIENTS: Four hundred fifty-two stapedotomies with interposition were performed in 412 patients (bilateral in 40 patients) by the senior author (R.C.) between 1987 and 1998. A tragal perichondrium graft was used in 314 cases and a vein graft was used in 138 cases as sealing material of the oval window. MAIN OUTCOME MEASURES: Audiometric data were recorded at 4 months, at 1 year, and at 3 years after surgery after American Academy of Otolaryngology-Head and Neck Surgery guidelines, except for thresholds at 3 kHz, which were not available and which were replaced with those at 4 kHz. RESULTS: There were no significant intergroup differences in initial or late postoperative hearing outcome with regard to change in the pure-tone average bone conduction and air-bone gaps, or sensorineural hearing loss. Ears treated with a vein graft showed statistically better postoperative 2-kHz air-bone gap closure (p =0.0157), but the pure-tone average air-bone gap difference was not significant. Postoperative air-bone gap closure to within 10 dB was achieved in 91% of cases in the vein group and in 76% of cases in the perichondrium group. Specific study of the bone conduction level at 4 kHz showed a sensorineural hearing loss greater than 10 dB in 8% of cases in the vein group and in 11% of cases in the perichondrium group. One case of complete sensorineural hearing loss was observed with a tragal perichondrium graft (0.22%). CONCLUSION: These results suggest that the vein should be preferred to the tragal perichondrium in stapedotomy with interposition

    Chorda tympani schwannoma: one new case revealed during malignant otitis externa and review of the literature

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    This report relates the case of an 89-year-old male patient who presented a chorda tympani schwannoma dis-closed during the management of malignant otitis externa (MOE). To the best of the authors' knowledge, this is the first case in literature with incidental radiological finding of asymptomatic chorda tympani schwannoma

    How I do it: the combined petrosectomy

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    BACKGROUND: Petroclival and ventral brain stem tumors require a complex approach. METHOD: The combined petrosectomy is an epidural transtentorial-transpetrosal otoneurosurgical approach to achieve a retrolabyrinthine presigmoidal approach and an anterior petrosectomy in one single procedure. The different steps of this approach are described and illustrated by figures and a video. The indications and limitations of the technique are presented. CONCLUSION: The combined petrosectomy offers multiple corridors to the petroclival region and ventral brainstem while preserving the intrapetrous neurotological structures. Meticulous stepwise bony resection optimizing the dural opening and preservation of veins contributes to reducing the risk inherent to this technique
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