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American Journal of Neuroradiology 27:818-821, April 2006
© 2006 American Society of Neuroradiology

Case Report
SPINE

Cystic Extramedullary Ependymoma

J. Graçaa, N. Gültaslia, N. D’Haeneb, J. Brotchic, I. Salmonb and D. Balériauxa

a Department of Neuroradiology, Erasme University Hospital, Brussels, Belgium
b Department of Neuropathology, Erasme University Hospital, Brussels, Belgium
c Department of Neurosurgery, Erasme University Hospital, Brussels, Belgium

Address correspondence to Joana Graça, MD, Serviço de Neuroradiologia, Hospital de Egas Moniz, Rua da Junqueira 126, Lisbon 1349-019, Portugal

SUMMARY:Intradural extramedullary location of ependymoma is rare. To the best of our knowledge, only 9 cases have been described in the literature. We report a case of a histologically confirmed ependymoma (WHO grade II) presented in the MR imaging as a cystic, nonenhancing thoracic intradural extramedullary lesion compressing the spinal cord. The cystic appearance mimicking an arachnoid cyst at diagnosis and the leptomeningeal dissemination developed later were peculiarities that have never been previously described in relation to these rare tumors.




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Copyright © 2009 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X