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  • Title: Intraosseous sacral myxopapillary ependymoma and the differential diagnosis of sacral tumors.
    Author: Cihangiroglu M, Hartker FW, Lee M, Sehgal V, Ramsey RG.
    Journal: J Neuroimaging; 2001 Jul; 11(3):330-2. PubMed ID: 11462306.
    Abstract:
    Although involvement of other regions of the spinal cord and brain stem is seen, myxopapillary ependymoma is most commonly found at the filum terminale or cauda equina. Less commonly, myxopapillary ependymoma may occur outside the central nervous system from direct metastatic extension of an intrathecal 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 resonance imaging findings of this and other sacral tumors. Myxopapillary ependymoma should be considered in the differential diagnosis for a primary expansile sacral mass along with other lesions such as chordoma, aneurysmal bone cyst, and giant cell tumor.
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