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The Subependymoma is derived from subependymal astrocytic cells. In the present work we report 3 patients: 1 patient with data of endocranial hypertension, and two with neurological focus and spinal involvement. MRI (Magnetic Resonance Imagen) showed heterogeneous images, solid and cystic components, from different locations. Ependimo-Astrocytomas have neoplastic ependymal cells and gliofibrillar formation. Embryologically, the ventricle is lined by ependymal cells, below which is a layer of glial fibers and a layer of subependymal cells. When these layers of differentiation do not exist in development, there is high mitosis and these lesions with mixed characteristics can be found. Different tips and suggestions are provided in its management for resection in the surgical treatment of these cervical tumors.

Resection Methods of Tumors Posterior Fossa and Medulla with mixed Histological Characteristics