Rapid Spontaneous Malignant Transformation of a Radiation-Naive Vestibular Schwannoma

Malignant transformation of sporadic vestibular schwannomas (VS) is extremely rare in the absence of neurofibromatosis type 2 (NF2) or prior radiotherapy history. We present the case of a 36-year-old male patient with no familial predisposition who underwent primary resection for a benign VS....

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Audiologists and neurotologists should be aware that, in very rare cases, vestibular schwannomas can transform malignantly without prior radiation or NF2 history, underscoring the importance of ongoing imaging surveillance even for apparently stable tumors; however, this single case report is insufficient to change routine monitoring protocols.

Malignant transformation of a sporadic, radiation-naive vestibular schwannoma is exceedingly rare, and this case challenges the assumption that untreated schwannomas carry no malignant risk, with potential implications for patient counseling and surveillance strategies.

1. 01A sporadic vestibular schwannoma (acoustic neuroma) underwent rapid malignant transformation without prior radiation or NF2 diagnosis.
2. 02Malignant peripheral nerve sheath tumors arising from vestibular schwannomas are extremely rare, especially without radiation history.
3. 03The case highlights that spontaneous malignant transformation, though very rare, is possible in radiation-naive schwannomas.
4. 04Findings may inform patient counseling around the small but non-zero risk of malignant change.
5. 05A single case report is insufficient to alter standard surveillance or management guidelines.

PMID

42519929

DOI

10.1097/SCS.0000000000013190.

Journal

Journal of Craniofacial Surgery

Publication type

case_report

Evidence level

4

Sample size

1

Population

Single patient with sporadic, radiation-naive vestibular schwannoma and no NF2 history

Intervention

Observation and surgical management of malignantly transformed vestibular schwannoma