Related Experiment Video
Updated: Aug 13, 2026
04:34
Surgical Treatment of an Endolymphatic Sac Tumor
Published on: May 26, 2023
Ectopic meningioma: a case report with a literature review
1Department of Otolaryngology, Whipps Cross Hospital, London, UK. drgauravkr@yahoo.co.uk
Abstract:
Ectopic (extradural) meningiomas that do not originate from either the optic fascicle or the intracranial meninges are exceedingly rare. A patient with an ectopic meningioma in the external auditory canal and mastoid was treated in our unit. The world literature of the last 20 years was reviewed.
Insights
Ectopic meningiomas outside the brain are very rare. This study reports a case of extradural meningioma in the ear canal and reviews similar rare cases.
Area of Science:
- Neurosurgery
- Oncology
- Otolaryngology
Background:
- Ectopic meningiomas are rare tumors arising outside the central nervous system.
- Most ectopic meningiomas originate from the optic nerve or intracranial meninges.
- Extradural meningiomas in the external auditory canal are exceptionally uncommon.
Observation:
- A patient presented with an ectopic meningioma located in the external auditory canal and mastoid.
- The tumor did not originate from the optic fascicle or intracranial meninges.
- This case represents a rare instance of extradural meningioma in this anatomical location.
Findings:
- A review of the world literature over the past 20 years was conducted.
- The case highlights the rarity of ectopic meningiomas in the external auditory canal and mastoid.
- Analysis of existing literature supports the extreme infrequency of such presentations.
Implications:
- This case contributes to the limited understanding of ectopic meningioma behavior and presentation.
- Further research is needed to elucidate the pathogenesis and optimal management of these rare tumors.
- Increased awareness among clinicians may improve diagnosis and treatment of extradural meningiomas in unusual locations.