Magnetic resonance imaging of infratentorial anaplastic ependymoma in children

Abstract Objective To show the main findings for anaplastic ependymoma on MRI. Material and methods We reviewed all patients diagnosed with anaplastic ependymoma at our tertiary hospital during a six-year period. We recorded the MRI findings for this type of tumor (on conventional sequences followin...

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Bibliographic Details
Published in:Radiología (English ed.) 2012-01, Vol.54 (1), p.59-64
Main Authors: Martínez León, M.I, Vidal Denis, M, Weil Lara, B
Format: Article
Language:English
Subjects:
Anaplastic ependymoma
Ependimoma
Ependimoma anaplásico
Ependymoma
Magnetic resonance imaging
Radiology
Resonancia magnética
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Summary:Abstract Objective To show the main findings for anaplastic ependymoma on MRI. Material and methods We reviewed all patients diagnosed with anaplastic ependymoma at our tertiary hospital during a six-year period. We recorded the MRI findings for this type of tumor (on conventional sequences following the protocol for the study of CNS tumors, diffusion-weighted imaging, contrast-enhanced sequences, and MR spectroscopy). Results Our series comprises seven children with infratentorial anaplastic ependymoma. We found no definitive characteristics to distinguish between grade II and grade III tumors before histology, as none of the lesions had spread to the cerebrospinal fluid at diagnosis or showed increased restriction in the diffusion-weighted sequence. Conclusions The MRI characteristics cannot definitively distinguish between grade II ependymomas and anaplastic grade III ependymomas. Only a few details about diffusion and dissemination to the cerebrospinal fluid, if present, can distinguish between these types at imaging.
ISSN:2173-5107
2173-5107
DOI:10.1016/j.rxeng.2012.05.003