Abstract
Ependymomas are the least commonly encountered tumor of the three major glioma tumor groups which include astrocytomas and oligodendrogliomas. They comprise approximately 3–5% of all tumors in the central nervous system (1). Ependymomas are more commonly encountered in children, where they rank third behind low grade astrocytomas and medulloblastomas in terms of incidence (1). These tumors are derived from ependymal cells, and their location is most commonly proximal to the normal locations of ependymal cells throughout the central nervous system axis. Rarely, examples of ependymoma arising in ectopic locations including sacral region, mediastinum, ovary, broad ligament, and lung have been described (2).
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Prayson, R.A., Cohen, M.L. (2000). Ependymoma. In: Practical Differential Diagnosis in Surgical Neuropathology. Humana Press, Totowa, NJ. https://doi.org/10.1007/978-1-59259-037-7_12
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DOI: https://doi.org/10.1007/978-1-59259-037-7_12
Publisher Name: Humana Press, Totowa, NJ
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