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PT  - JOURNAL ARTICLE
AU  - Graça, J.
AU  - Gültaşli, N.
AU  - D’Haene, N.
AU  - Brotchi, J.
AU  - Salmon, I.
AU  - Balériaux, D.
TI  - Cystic Extramedullary Ependymoma
DP  - 2006 Apr 01
TA  - American Journal of Neuroradiology
PG  - 818--821
VI  - 27
IP  - 4
4099  - http://www.ajnr.org/content/27/4/818.short
4100  - http://www.ajnr.org/content/27/4/818.full
SO  - Am. J. Neuroradiol.2006 Apr 01; 27
AB  - 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.