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Highlights Metastatic involvement of peripheral nerves by perineural invasion from an adjacent cancer is not uncommon. Nerve root metastasis without extension from an adjacent process has been seldom reported in case of solid tumors. No cases of gastric adenocarcinoma metastasis to the nerves have been reported to date. In case of known malignancy and refractory pain, the possibility of a nerve root metastasis should be considered.

Intracranial ependymomas represent a rare subgroup of glial tumours, showing a wide variety of imaging characteristics, often representing a challenging diagnosis for neuroradiologists. Here, we review the most recent scientific Literature on intracranial ependymomas, highlighting the most characteristic computed tomography and magnetic resonance imaging features of these neoplasms, along with epidemiologic data, recent classification aspects, clinical presentation and conventional therapeutic strategies. In addition, we report an illustrative case of an 18-year-old girl presenting with an intracranial supratentorial, anaplastic ependymoma, with the aim of contributing to the existing knowledge and comprehension of this rare tumour.

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