목적: With instrumental and technical improvement, cochlear nerve can be preserved during removal of small‐sized acoustic neuromas such as intralabyrinthine schwannoma (ILS), cochlear schwannoma (CS), and internal auditory canal confined vestibular schwannoma (IAC VS). So, severe to profound hearing loss caused by these conditions are good candidates for cochlear implantation (CI), there are few reports on CI after schwannoma removal using EETTA. Here we present an outcome of patients who underwent simultaneous CI in small acoustic neuroma. 방법:Twenty patients (Fourteen with IAC fundus tumors, three CS, and three with ILS) underwent simultaneous CI and tumor removal between January 2020 and April 2024 were retrospectively enrolled. Their medical charts and test results were reviewed. 결과:After at least 8 months of follow‐up, 12 patients were operated by translabyrinthine approach and 8 patients were operated by endoscopic approach. there were no severe surgical complications such as meningitis, infection, or skin necrosis. 19 of the 20 patients responded to auditory stimulation. 17 out of 19 auditory‐responsive patients scored >80% on sentence recognition. 결론:Simultaneous CI and Acoustic tumor removal are feasible for the treatment of small acoustiv tumors. Preservation of the cochlear nerve and modiolus is important for favorable CI outcomes. Therefore, ILS and IAC fundus tumors in patients with nonserviceable hearing should be surgically removed as early as possible to enable proper hearing rehabilitation with CI.