ArticleJournal of neurological surgery. Part B, Skull base2026
Implications of Tumor Size on Auditory Brainstem Implant Performance.
Article in Journal of neurological surgery. Part B, Skull base, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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13 authors.
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Abstract
Objectives: To better understand the implications of tumor size on auditory brainstem implant (ABI) categories of auditory performance (CAP) score to facilitate more precise patient counselling. Design: Single-center retrospective chart review. Setting: Tertiary referral center. Participants: Patients > 18 years old with neurofibromatosis type 2 who underwent ABI placement between the years 2009 and 2023 were included. Patients with prior surgical resection were excluded to reduce the potential of previous cochlear nucleus trauma confounding results. Main Outcome Measures: Ipsilateral tumor volume was measured from the preoperative MRI, and the primary endpoint was the 1-year CAP score. Results: Fourteen patients were included for analysis, with an average age of 35.3 years. The average preoperative ipsilateral tumor volume was 22.8 cm Conclusion: Increased tumor size has a negative correlation with ultimate ABI performance. There were patients in this study with larger tumor sizes who still benefited from ABI placement. While larger tumor size should not be a contraindication for ABI placement, understanding the role tumor size can have on performance variation can serve to improve tumor management strategies and preoperative counselling.
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