MSH: Rare mixed tumors of the brain and rarely the spinal cord which contain malignant neuroectodermal (glial) and mesenchymal components, including spindle-shaped fibrosarcoma cells. These tumors are highly aggressive and present primarily in adults as rapidly expanding mass lesions. They may arise in tissue that has been previously irradiated. (From Br J Neurosurg 1995 Apr;9(2):171-8),NCI: A type of glioma (cancer of the brain that comes from glial, or supportive, cells).,NCI: A rare histological variant of glioblastoma (WHO grade IV) characterized by a biphasic tissue pattern with alternating areas displaying glial and mesenchymal differentiation (WHO).

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