Ruptured arteriovenous malformation in the auditory nerve: technical case report.

OBJECTIVE AND

IMPORTANCE

Arteriovenous malformations in the cranial nerves are very rare, and only one case has been reported in the literature. To our knowledge, this is the first case report of an arteriovenous malformation in the auditory nerve.

CLINICAL PRESENTATION: A 30-year-old woman presented with a subarachnoid hemorrhage resulting from rupture of an arteriovenous malformation in the auditory nerve.

INTERVENTION: During the operation, the auditory nerve bundle was found to be severely damaged and a nidus was identified inside the bundle.

CONCLUSION

Although arteriovenous malformations are thought to arise in the 4th to 8th weeks of gestation, this case might indicate a more specific time of emergence based on embryogenesis of the cranial nerves.