Background: The recommended treatment for early glottic cancer is trans-oral laser microsurgery, with excellent oncological and functional outcomes. The aim of this study is to evaluate oncological and functional outcomes in patients who underwent monolateral type III laser cordectomy for early glottic cancer. Methods: A total of 104 patients were enrolled. Staging, histological type, grading, assessment of surgical margins, mean time of relapse, OS, DFS, and DSS were obtained. Maximum phonation time, GIRBAS score, shimmer, jitter, fundamental frequency, and Yanagihara score were evaluated. Patients were submitted to the VHI-10 questionnaire. Results: Correlations between patients with single recurrence and the anterior commissure involvement were analyzed, as well as correlations between patients with recurrence and the status of margins. Correlations between VHI-10 scores and anterior commissure involvement were analyzed. Conclusions: The recurrence rate was higher in patients with anterior commissure involvement. A significant inversely proportional association between DSS and assessment of surgical margins was observed. The distribution of VHI-10 scores differed significatively in patients with and without anterior commissure involvement. Vocal results reflected mild dysphonia.

Background: Narrow duplicated internal auditory canal (IAC) is a rare congenital malformation frequently associated with severe-to-profound sensorineural hearing loss. Case Presentation: We present a one-year-old girl with bilateral narrow duplicated IAC and profound hearing loss evaluated through CT/MRI and electrically evoked auditory brainstem response (EABR). Methods: We conducted a systematic review (1990–2023), identifying 59 published cases of which 24 were bilateral. The mean age at diagnosis was 10.34 years, and 25 cases presented additional inner ear malformations. Only seven patients underwent cochlear implantation, and EABR was performed in four cases. Outcomes of cochlear implantation were heterogeneous. Discussion: In our case, EABR showed a reproducible wave V on the right side, supporting candidacy for cochlear implantation which led to positive early auditory responses. Conclusions: This case and review highlight the role of EABR in identifying residual cochlear nerve functionality and guiding candidacy for cochlear implantation in narrow duplicated IAC.