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Objectives Describe a single institution's cochlear implant outcomes for patients with inner ear schwannomas (IES) in the setting of various tumor management strategies (observation, surgical resection, or stereotactic radiosurgery SRS). Study Design Single-institution retrospective review. Patients Patients diagnosed with isolated, sporadic IES who underwent cochlear implantation (CI). Interventions CI with or without IES treatment. Main Outcome Measures Speech perception outcomes, tumor status. Results Twelve patients with IES underwent CI with a median audiologic and radiologic follow-up of 12 months. Six patients underwent complete resection of the tumor at the time of CI, four underwent tumor observation, and two underwent SRS before CI. At 1 year after CI for all patients, the median consonant–nucleus–consonant (CNC) word score was 55% (interquartile range, 44–73%), and the median AzBio sentence in quiet score was 77% (interquartile range, 68–93%). Overall, those with surgical resection performed similarly to those with tumor observation (CNC 58 versus 61%; AzBio in quiet 74 versus 91%, respectively). Patients who underwent tumor resection before implantation had a wider range of speech performance outcomes compared with patients who underwent tumor observation. Two patients had SRS treatment before CI (10 months previous and same-day as CI) with CNC word scores of 6 and 40%, respectively. Conclusions Patients with IES who underwent CI demonstrated similar speech performance outcomes (CNC 56% and AzBio 82%), when compared with the general cochlear implant population. Patients who underwent either tumor observation or surgical resection performed well after CI.
Nassiri et al. (Mon,) studied this question.