[Lateral approach to an extramedullary, intrameningeal C1-C2 meningioma].

This article describes an innovative approach to the excision of extramedullary meningioma located in the vicinity of the cranio-cervical junction, a tumour very rarely encountered in clinical practice. The primary innovation consists in the use of the lateral approach, with the addition of partial resection of the lateral mass of Cl. The authors present the case of a patient with a meningioma located at the level of the dens of the epistropheus, on the anterior surface of the spinal cord. The lateral approach used in this case allowed for complete resection of the tumour with minimum operative risk, and the patient's recovery has been excellent.