Radiologic analysis of large vestibular schwannoma position on surgical outcomes

Large vestibular schwannomas (VS) often compress the brainstem and differ in their relation to the internal auditory canal (IAC); the significance of these radiographic features on postoperative outcomes remains unclear. This study quantifies the impact of brainstem compression (BSC) and position relative to the IAC on surgical outcomes in VS.

Tumor position relative to the internal auditory canal and brainstem on preoperative imaging may be a useful predictor of surgical outcomes for large vestibular schwannomas; surgeons could incorporate radiologic position analysis into preoperative planning and patient counseling.

Identifying imaging-based predictors of surgical outcomes for large vestibular schwannomas could improve patient selection, risk stratification, and surgical approach decisions.

1. 01Study analyzes preoperative MRI positioning of large vestibular schwannomas relative to the internal auditory canal and brainstem.
2. 02Tumor position was correlated with postoperative surgical outcomes.
3. 03Radiologic classification of tumor position may serve as a preoperative prognostic tool.
4. 04Findings are relevant to neurotological surgeons and neuroradiologists managing large tumors.
5. 05Published in Journal of Neuro-Oncology (DOI: 10.1007/s11060-026-05639-8).

PMID

42234057

DOI

10.1007/s11060-026-05639-8.

Journal

Journal of Neuro-Oncology

Publication type

research_article

Evidence level

2b

Population

Patients with large vestibular schwannomas undergoing surgical resection

Intervention

Radiologic analysis of vestibular schwannoma position (relative to internal auditory canal and brainstem) on preoperative imaging

Comparator

Tumors in differing positional configurations