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- W3114577851 abstract "Le spasme hémifacial (SHF) est une contracture involontaire des muscles de la face innervés par le nerf facial (VII) homolatéral. Nous avons étudié l’étiologie de ces SHF. Cette étude rétrospective concernait 233 patients atteints de SHF, venant à la consultation d’ophtalmologie pour traitement par injection trimestrielle de neurotoxine botulique A. Nous avons retenu les 198 patients ayant une IRM dans leur bilan. Nous avons recueilli les données cliniques des patients et précisé l’étiologie du SHF. Les 198 patients (62,6 % de femmes) ont un âge moyen de 55,7 ± 14 ans. Une étiologie est retrouvée dans 52,5 % des cas. Dans 34,5 % des SHF, l’IRM a révélé une compression vasculaire à l’émergence cérébrale du VII. Les tumeurs cérébrales ont représenté 1,5 % des cas. L’IRM était normale dans 64 % des cas. Dans ces SHF secondaires, nous trouvons 8,5 % de paralysies faciales périphériques, 4 % d’origine traumatique et 4 % secondaires à une lésion de l’œil. Un stress est retrouvé dans 17 % des cas. Cette étude illustre la nécessité de réaliser une IRM centrée sur la fosse postérieure dans le bilan de SHF afin de cerner les SHF primaires liés à une compression vasculaire du nerf facial et de ne pas méconnaître une tumeur de la fosse postérieure. Le traitement du SHF repose sur les injections trimestrielles de neurotoxine botulique/A (NTBo/A). En cas d’insuffisance de résultats par les injections de NTBo/A, la décompression microvasculaire neurochirurgicale sera discutée pour les SHF primaires. Hemifacial spasm (HFS) is an involuntary contracture of the facial muscles innervated by the ipsilateral facial nerve. We studied the etiology of these HFS. This retrospective study included 233 patients with HFS who came to the ophthalmologist for quarterly botulinum neurotoxin A injection. Of these, we analyzed the 198 patients for whom MRI scans were performed. We recorded patient clinical data and clarified the etiology of their HFS. The 198 patients (62.6% women) had a mean age of 55.7 ± 14 years. An etiology was found in 52.5% of cases. In 34.5% of HFS, MRI revealed vascular compression where the facial nerve emerged from the brainstem. We specify the arteries involved. Brain tumors accounted for 1.5% of cases. MRI was normal in 64.5% of cases. In these secondary cases of HFS, we found 8.5% peripheral facial palsy, 4% post-traumatic HFS and 4% secondary to an eye injury. Stress was found in 17% of patients. This study illustrates the need for MRI with attention to the posterior fossa in the work-up of HFS in order to identify primary HFS associated with vascular compression of the facial nerve and to rule out a rare but serious posterior fossa tumor. The treatment of HFS is based on quarterly injections of botulinum neurotoxin/A (NTBo/A), the three brands of which have market approval. The injection pattern and frequency is customized according to the results. In cases of insufficient response to injections of NTBo/A, neurosurgical microvascular decompression may be considered for cases of primary HFS." @default.
- W3114577851 created "2021-01-05" @default.
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- W3114577851 date "2021-03-01" @default.
- W3114577851 modified "2023-10-18" @default.
- W3114577851 title "Spasmes hémifaciaux. Étiologies et conduite à tenir" @default.
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- W3114577851 doi "https://doi.org/10.1016/j.jfo.2020.08.004" @default.
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