人工耳蜗植入术后同侧前庭神经鞘瘤

IF 0.4 Q4 OTORHINOLARYNGOLOGY Case Reports in Otolaryngology Pub Date : 2022-02-18 DOI:10.1155/2022/4918785
S. Tüpker, N. Ay, L. Scholtz, H. Gehl, V. Mautner, P. Goon, H. Sudhoff, I. Todt
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引用次数: 0

摘要

目的前庭神经鞘瘤的发病率约为4.2 / 10万/年。到目前为止,全世界约有70万例人工耳蜗植入手术;因此,耳蜗植入术后前庭神经鞘瘤的发生可以认为是罕见的。最近的发展允许通过磁共振成像(MRI)对植入侧内耳道(IAC)和耳蜗进行安全观察和监测,即使在人工耳蜗植入后也是如此。病人。71岁女性,突发性听力丧失,对侧前庭神经鞘瘤,无II型神经纤维瘤病的临床和遗传征象。干预(s)。同侧人工耳蜗植入及对侧前庭神经鞘瘤切除伴肿瘤定期随访。主要结果测量。同侧人工耳蜗植入前后3T MRI T1 GAD比较。结果在同侧人工耳蜗植入术1年后,观察到一肿瘤在内耳道底部生长。虽然在耳蜗植入后首次在对侧前庭神经鞘瘤旁发现,但2毫米的扫描层厚度不能完全排除术前持续存在的小肿瘤。根据临床表现和基因排除NFII后,将患者分类为NFII马赛克型。结论人工耳蜗植入术后,腹腔内肿瘤仍可引起眩晕、面瘫,影响听力学预后。人工耳蜗植入前使用的MRI切片厚度应在2mm以下。
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Ipsilateral Vestibular Schwannoma after Cochlear Implantation
Objective The vestibular schwannoma incidence rate is approximately 4.2 per 100,000/year. Thus far, about 700,000 cochlear implantations have been performed worldwide; therefore, the occurrence of vestibular schwannoma postcochlear implantations can be assumed to be infrequent. Recent developments allow safe observation and surveillance of the implanted-side internal auditory canal (IAC) and cochlea by magnetic resonance imaging (MRI), even after cochlear implantation. Patients. A 71-year-old woman with sudden hearing loss and a contralateral vestibular schwannoma without clinical and genetic signs of neurofibromatosis type II. Intervention(s). Ipsilateral cochlear implantation and contralateral vestibular schwannoma extirpation with regular tumor follow-up. Main Outcome Measure(s). Comparison of ipsilateral pre and postcochlear implantation 3T MRI T1 GAD. Results We observed a tumor growing at the fundus of the internal auditory canal 1 year after cochlear implantation on the ipsilateral side. Although first detected after cochlear implantation beside a known vestibular schwannoma on the contralateral side, a scan slice thickness of 2 mm cannot fully exclude the preoperative persistence of a small tumor. Based on the clinical findings and after genetic exclusion of NFII, the patient was classified as a NFII mosaic type. Conclusion Even after cochlear implantation, tumors in the IAC causing vertigo, facial palsy, and affecting the audiologic outcome can be detected by MRI. The MRI slice thickness used before cochlear implantation should be under 2 mm.
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来源期刊
Case Reports in Otolaryngology
Case Reports in Otolaryngology OTORHINOLARYNGOLOGY-
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审稿时长
13 weeks
期刊最新文献
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