Objective:

To investigate the long-term results of hearing function in patients with cerebellopontine angle tumors other than vestibular schwannoma, and to clarify whether postoperative hearing deterioration is a phenomenon specific to vestibular schwannoma patients.

Key Findings:

• Long-term hearing function preservation rates were evaluated, indicating potential deterioration over time, which may have significant implications for patient management.
• Some patients with severe preoperative hearing loss experienced improvement post-surgery, highlighting the variability in outcomes.
• No prior long-term studies specifically focused on CPA tumors other than vestibular schwannoma, indicating a gap in the literature.

Interpretation:

The study suggests that while hearing function can be preserved after surgery for CPA tumors other than vestibular schwannoma, there may be a risk of long-term deterioration, similar to findings in vestibular schwannoma patients, which could inform surgical decision-making.

Limitations:

• The study is retrospective and may have selection bias, potentially affecting the reliability of the findings.
• Limited to a specific patient population, which may not generalize to all CPA tumor cases, necessitating caution in interpretation.

Conclusion:

Further research is needed to understand the long-term auditory outcomes in patients with CPA tumors other than vestibular schwannoma, particularly focusing on comparative studies with vestibular schwannoma patients to enhance clinical understanding.