M. Cihangiroglu et al., Intraosseous sacral myxopapillary ependymoma and the differential diagnosis of sacral tumors, J NEUROIMAG, 11(3), 2001, pp. 330-332
Although involvement of other regions of the spinal cord and brain stem is
seen, myxopapillary ependymoma is most commonly found at the filum terminal
e or cauda equina. Less commonly, myxopapillary ependymoma may occur outsid
e the central nervous system from direct metastatic extension of an intrath
ecal tumor, and rarely it may present as a primary tumor outside the thecal
sac. The authors present a case of primary sacral myxopapillary ependymoma
, which was first diagnosed as a chordoma. They then discuss the magnetic r
esonance imaging findings of this and other sacral tumors. Myxopapillary ep
endymoma should be considered in the differential diagnosis for a primary e
xpansile sacral mass along with other lesions such as chordoma, aneurysmal
bone cyst, and giant cell tumor.