Primary ependymoma of a cranial nerve

Little, Nicholas; Morgan, Michael K.; Eckstein, Robert P.

doi:10.3171/jns.1994.81.5.0792

Cited by 23 publications

(8 citation statements)

References 14 publications

(12 reference statements)

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“…To our knowledge, there is only one recently reported case of supratentorial ectopic ependymoma investigated by MRI. 15 In this report, the ependymoma arose from the trigeminal nerve.…”

Section: Discussionmentioning

confidence: 74%

Supratentorial Ectopic Ependymoma

Vernet

Farmer

Meagher‐Villemure

et al. 1995

Can. j. neurol. sci.

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Background: Ependymomas usually arise from the ventricular surface. Methods: We report an 11-year-old female who presented with a supratentorial ectopic ependymoma. Results: The patient presented with a two-month-history of progressive headache, nausea and vomiting. Examination revealed papilledema, horizontal nystagmus, diplopia on upward gaze, and right pronator drift. CT scan showed an enhancing left precentral subcortical lesion measuring 3 cm in diameter with associated edema and mass effect. Its medial border was located 3 cm from the ependymal surface of the ventricle. A firm tumour was dissected from the centrum semiovale white matter, and removed in toto as confirmed on MRI. Pathological examination revealed histological, immuno-histochemical and electron microscopic features consistent with an ependymoma. Spine MRI and bone marrow aspirate, as well as lumbar puncture of cytology failed to show any dissemination. Conclusion: From the literature review, this represents an exceptional ependymoma located at the distance from the ventricular system or cisterns. Different pathogenic alternatives are discussed. RESUME: Ependymome ectopique supratentoriel. Objectif: Les 6pendymomes sont gdn^ralement issus de la surface ventriculaire. Methode: Nous rapportons d'une fillette de 11 ans prSsentant un Ependymome supratentoriel ectopique. Resultats: Cette patiente souffrait depuis 2 mois de c6phal6es progressives, de nause'es et de vomissements. A l'examen neurologique, on relevait un oedeme papillaire, un nystagmus horizontal, une diplopie pour le regard vers le haut et une pronation de la main droite a l'epreuve des bras tendus. Le CT scan montrait une lesion de 3 cms de diametre, sous-corticale, pr6centrale, captant le contraste, entourfie d'oedeme avec effet de masse. Sa partie m&liane 6tait situ6e a 3 cms du ventricule. Cette tumeur ferme a et6 totalement extirpde du centre semi-ovale tel que confirme a 1'IRM post-op6ratoire. Le diagnostic retenu aprfes examen histologique, immuno-histochimique et apr&s microscopie electronique fut celui d'6pendymome. Une IRM spinale, un examen de moelle osseuse et une ponction lombaire n'ont pas montre de dissemination tumorale. Conclusion: Aprfes revue de la literature, ce cas paratt exceptionnel par sa localisation a distance du systeme ventriculaire ou cisternal. Differentes alternatives pathogfiniques sont discut&s.Can. J. Neurol. Sci. 1995; 22: 316-319 Ependymomas are rare tumours arising from the cells lining the ventricular system and the central canal of the spinal cord. They account for 1.2% to 6% of primary intracranial neoplasms 1 " 4 and 24% of the intraspinal tumours. 5 Intracranial ependymomas are preferentially encountered in children in whom they represent up to 12% of all brain tumours, 3 -5 " 9 whereas intraspinal ependymomas occur essentially in young adults. 2 -5 -10 -" Approximately two-thirds of cerebral ependymomas are infratentorial and most of them arise within the fourth ventricle. '-4 "" We present the unusual case of supratentorial epe...

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“…To our knowledge, there is only one recently reported case of supratentorial ectopic ependymoma investigated by MRI. 15 In this report, the ependymoma arose from the trigeminal nerve.…”

Section: Discussionmentioning

confidence: 74%

Supratentorial Ectopic Ependymoma

Vernet

Farmer

Meagher‐Villemure

et al. 1995

Can. j. neurol. sci.

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“…The majority of ependymomas are supratentorial and located in close proximity to the ventricular system. Rarely, they grow extraxially, in such curious locations as the soft tissues of the sacral region (Dover et al, 1994;Botti et al, 1994), peripheral nerves (Little et al, 1994), lungs, mediastinum and ovaries (Doglioni et al, 1988;Carlsson et al, 1989;Duggan et al, 1989;Nobles et al, 1989;Crotty et al, 1992;Kleinmann et al, 1993;Gurrieri and Jarlsfelt, 1993).…”

Section: Ependymoma and Subependymomamentioning

confidence: 99%

Tumours of the Central Nervous System

Liberski

2013

The Ultrastructure of Human Tumours

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“…Ependym om as arising from peripheral, cranial or spinal nerves have been described also. 33,34 Other ectopic ependym om as are found m ostly in the sacrococcygeal region. 34,35 D espite the fact that m alignant ependym om as occur m ore frequently supratentorially 6,7,9,16,25,27,30,36,37 a better prognosis has been observed as com pared w ith those located below the tentorium .…”

Section: Localizationmentioning

confidence: 99%