Related Experiment Video
Updated: Feb 20, 2026
Surgical Treatment of an Endolymphatic Sac Tumor
Published on: May 26, 2023
Treatment recommendations for primary extradural meningiomas
Austin Mattox1, Betsy Hughes, James Oleson
1Department of Surgery (Division of Neurosurgery), Duke University Medical Center, Durham, North Carolina, USA.
Abstract:
Primary extradural meningiomas (PEMs) represent about 2% of all meningiomas and are often encountered by non-neurosurgeons. These lesions typically present as enlarging, painless, benign masses that can be surgically cured. Imaging is critical for defining involvement of adjacent structures; however, diagnosis depends on classic histologic patterns. Treatment for benign PEMs (WHO I) consists of resection with wide margins, whereas adjuvant therapy after resection of atypical (WHO II) or malignant (WHO III) PEMs should be considered. By using the collective experience from our comprehensive cancer center, including neuro-oncologists, neuroradiologists, and neurosurgeons, in addition to a complete literature review, the authors have established treatment guidelines not previously reported. This manuscript describes key features of these challenging tumors to aid in diagnosis, presents the largest published review of all reported PEMs (n = 163), and provides salient treatment guidelines to surgeons unfamiliar with these challenging tumors.
Insights
Primary extradural meningiomas (PEMs) are rare tumors often managed by non-neurosurgeons. This study provides diagnostic insights and treatment guidelines for these challenging lesions, based on a large case review.
Area of Science:
- Neurosurgery
- Oncology
- Pathology
Background:
- Primary extradural meningiomas (PEMs) constitute approximately 2% of all meningiomas.
- These benign, painless masses often require management by non-neurosurgeons.
- Accurate diagnosis relies on characteristic histologic patterns and advanced imaging.
Purpose of the Study:
- To describe key features aiding in the diagnosis of PEMs.
- To present the largest published review of PEMs (n=163).
- To establish novel treatment guidelines for surgeons managing these tumors.
Main Methods:
- Comprehensive literature review of all reported PEMs.
- Analysis of collective experience from a multidisciplinary cancer center.
- Establishment of treatment guidelines based on tumor grade (WHO I, II, III).
Main Results:
- PEMs present as enlarging, painless masses.
- Surgical resection with wide margins is standard for benign (WHO I) PEMs.
- Adjuvant therapy should be considered for atypical (WHO II) or malignant (WHO III) PEMs.
Conclusions:
- PEMs require careful diagnosis and tailored treatment strategies.
- Established guidelines aim to assist surgeons unfamiliar with PEMs.
- Multidisciplinary input is crucial for optimal patient management.
