Myxopapillary ependymoma

Case contributed by Assoc Prof Frank Gaillard



Patient Data

Age: 30
Gender: Male

Central intrathecal enhancing mass at the lower L3 level again shows intermediate T1 and heterogeneous increased T2 signal. This displaces the cauda equina laterally with near complete effacement of CSF space.  The lesion measures 12 x 16 x 30 mm (AP x ML x SI).  This is inseparable from the filum terminale which runs along its posterior border. No evidence of osseous remodeling. No mass or abnormal enhancement elsewhere within the spine.

Annotated image

The filum terminale (yellow arrows) can be identified as an unpaired slightly different signal intensity and slightly different caliber structure running behind the mass ( * ), in the midline. 

MICROSCOPIC DESCRIPTION:  The sections show a moderately cellular tumour, forming perivascular pseudorosettes. The tumour cells form cuffs around hyalinised blood vessels. There is mucoid material in-between the blood vessels and the tumour cells. The tumour cells have mildly enlarged round nuclei and small nucleoli. One mitosis is noted. There is no endothelial cell hyperplasia or necrosis. The features are those of myxopapillary ependymoma.

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Case information

rID: 19566
Published: 25th Sep 2012
Last edited: 25th Aug 2020
Tag: spine
Inclusion in quiz mode: Included

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