Abstract：
Intracochlear schwannoma is very rare, and complete loss of hearing is inevitable after the removal of this tumor. Here, we discuss cochlear implantation (CI) performed simultaneously with the removal of an intracochlear schwannoma.
Retrospective single-center study.
Tertiary medical institute.
Simultaneous CI and intracochlear schwannoma removal were performed in 4 subjects. After subtotal cochleostomy, the tumors were removed meticulously, with preservation of the modiolus. A new slim modiolar electrode (Nucleus CI632) was placed in a manner that hugged the modiolus. The surgical outcomes of functional gain, word recognition score (WRS), sound localization, and hearing in noise and speech intelligibility tests were investigated.
Intracochlear schwannomas were removed successfully from the 4 patients, with no remnant tumor. The mean aided hearing threshold 6 months after surgery was 25.0 ± 1.8 dB, and the mean-aided WRS with a 60 dB stimulus was 36.0 ± 18.8% (range 16%-60%). The Categorical Auditory Performance (CAP) score of the 3 single-sided deafness patients under contralateral ear masking was 7. The CAP score of the patient with bilateral sensorineural hearing loss was 6, which improved from a preoperative score of 0.
When an intracochlear schwannoma does not completely invade the modiolus, CI with simultaneous tumor removal can be performed successfully, resulting in good hearing performance. A slim modiolar electrode can be placed stably at the modiolus after schwannoma removal.
Retrospective single-center study.
Tertiary medical institute.
Simultaneous CI and intracochlear schwannoma removal were performed in 4 subjects. After subtotal cochleostomy, the tumors were removed meticulously, with preservation of the modiolus. A new slim modiolar electrode (Nucleus CI632) was placed in a manner that hugged the modiolus. The surgical outcomes of functional gain, word recognition score (WRS), sound localization, and hearing in noise and speech intelligibility tests were investigated.
Intracochlear schwannomas were removed successfully from the 4 patients, with no remnant tumor. The mean aided hearing threshold 6 months after surgery was 25.0 ± 1.8 dB, and the mean-aided WRS with a 60 dB stimulus was 36.0 ± 18.8% (range 16%-60%). The Categorical Auditory Performance (CAP) score of the 3 single-sided deafness patients under contralateral ear masking was 7. The CAP score of the patient with bilateral sensorineural hearing loss was 6, which improved from a preoperative score of 0.
When an intracochlear schwannoma does not completely invade the modiolus, CI with simultaneous tumor removal can be performed successfully, resulting in good hearing performance. A slim modiolar electrode can be placed stably at the modiolus after schwannoma removal.
摘要：
目的：耳蜗神经鞘瘤非常罕见，切除肿瘤后，听力完全丧失是不可避免的。这里,我们讨论了在切除耳蜗内神经鞘瘤的同时进行的耳蜗植入（CI）。
方法：回顾性单中心研究。
方法：三级医学院。
方法：对4名受试者同时进行CI和耳蜗内神经鞘瘤切除。人工耳蜗次全造口术后，肿瘤被精心切除，保存了马尾藻。以拥抱modiolus的方式放置新的细长modiolar电极（NucleusCI632）。功能增益的手术结果，单词识别得分(WRS)，声音定位,并对噪声中的听力和语音清晰度测试进行了调查。
结果：4例患者成功切除耳蜗内神经鞘瘤，没有残留肿瘤.术后6个月平均辅助听阈为25.0±1.8dB,60dB刺激的平均辅助WRS为36.0±18.8％（范围16％-60％）。3例单侧耳聋患者在对侧耳罩下的分类听觉表现(CAP)评分为7分。双侧感音神经性耳聋患者的CAP评分为6分，较术前0分提高。
结论：当耳蜗内神经鞘瘤未完全侵入时，同时切除肿瘤的CI可以成功进行，导致良好的听力表现。神经鞘瘤切除后，可以将细长的modiolar电极稳定地放置在modiolus处。
方法：回顾性单中心研究。
方法：三级医学院。
方法：对4名受试者同时进行CI和耳蜗内神经鞘瘤切除。
结果：4例患者成功切除耳蜗内神经鞘瘤，
结论：当耳蜗内神经鞘瘤未完全侵入时，
