The patient went on to have a resection.
Histology
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.