Abstract
Objective:
To describe a case of a subcutaneous, extradural, retro sacral,
myxopapillary ependymoma which presented as a pilonidal cyst.
Case description:
A 6-year old boy presented with a painful intergluteal mass. The
histopathologic examination revealed an ependymal neoplasm with
conspicuous myxopapillary appearance.
Conclusion:
These tumors are extremely unusual in extradural locations, and
their biological behavior is more aggressive than those cases of
similar histogenesis localized in the conus medullaris-filum
terminale region.
Key words:
extradural, filum terminale, myxopapillary ependymoma, pilonidal
cyst, subcutaneous.
