Download PDF
CC BY-NC-ND 4.0 · J Neurol Surg B Skull Base 2021; 82(S 01): S35-S36
DOI: 10.1055/s-0039-3402056
Skull Base: Operative Videos

C1 Hemilaminectomy for Resection of Foramen Magnum Meningioma: 2-Dimensional Operative Video

Stefan Lieber 
1   Department of Neurological Surgery, Eberhard-Karls-University, University Hospital Tübingen, Tübingen, Germany
2   Department of Neurological Surgery, Microsurgical Neuroanatomy Lab, University of Pittsburgh, Pittsburgh, Pennsylvania, United States
,
Rocio Evangelista-Zamora
1   Department of Neurological Surgery, Eberhard-Karls-University, University Hospital Tübingen, Tübingen, Germany
,
Maximiliano Nunez
2   Department of Neurological Surgery, Microsurgical Neuroanatomy Lab, University of Pittsburgh, Pittsburgh, Pennsylvania, United States
,
Marcos Tatagiba
1   Department of Neurological Surgery, Eberhard-Karls-University, University Hospital Tübingen, Tübingen, Germany
› Author Affiliations
› Further Information
   Permissions and Reprints

Abstract

We present a case of a sizeable foramen magnum meningioma that was resected through a C1 hemilaminectomy in prone (concorde) position. The patient is a 51-year-old woman with a 3-month history of progressive paresthesia of the upper and lower extremities, followed by gait disturbance, and hand apraxia. There was no complaint of nuchal pain.

On magnetic resonance imaging (MRI) a briskly enhancing extra-axial, intradural craniospinal lesion, extending from the basion of the lower clivus, over the tectorial membrane to the middle of the axis' body was discovered. There was significant transposition and compression of the medulla and corresponding focal hyperintensity on T2-weighted imaging.

On physical examination, the patient was ambulatory independently, notwithstanding a pronounced spinal ataxia. There were deficits in sensation and proprioception, as well as urinary retention, but preserved function of the lower cranial nerves.

In view of the profound transposition of the medulla, utilization of the corridor created by the tumor seemed feasible and we felt that a limited C1 hemilaminectomy would provide sufficient microsurgical access thus obviating a more extensive and invasive approach to the craniocervical junction.

A gross-total resection was achieved; histopathology confirmed a World Health Organization (WHO) grade I angiomatous meningioma with a low-proliferation index. The patient was discharged home 3 days after surgery and her spinal ataxia resolved completely within 3 months of out-patient rehabilitation. At 3-year follow-up, there was no indication of residual or recurrence.

The link to the video can be found at: https://youtu.be/WyShbfr-xi0.

Keywords

foramen magnum - C1 hemilaminectomy - craniocervical junction - meningioma - concorde position - operative video

Disclosures

None. The authors have no personal, institutional, or financial interest in any of the materials, drugs, or devices described in this article.




Publication History

Received: 06 May 2019

Accepted: 29 September 2019

Article published online:
13 March 2020

© 2020. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany