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Rosette-forming Glioneuronal Tumors in the Posterior Third Ventricle

Published online by Cambridge University Press:  23 September 2014

Ibrahim Alnaami ,
Keith Aronyk ,
Jian-Qiang Lu ,
Edward S. Johnson  and
Cian O'Kelly
Ibrahim Alnaami*
Affiliation:
Division of Neurosurgery, University of Alberta, Edmonton, Canada Department of Surgery, Section of Neuropathology, Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Canada
Keith Aronyk
Affiliation:
Division of Neurosurgery, University of Alberta, Edmonton, Canada
Jian-Qiang Lu
Affiliation:
Division of Neurosurgery, University of Alberta, Edmonton, Canada
Edward S. Johnson
Affiliation:
Division of Neurosurgery, University of Alberta, Edmonton, Canada
Cian O'Kelly
Affiliation:
Division of Neurosurgery, University of Alberta, Edmonton, Canada
*
Neurosurgery Division, 2D2.01 Mackenzie Health Sciences Centre, University of Alberta, 8440 112 Street, Edmonton, Alberta, T6G 2B7, Canada. Email: [email protected].
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Rosette-forming glioneuronal tumor (RGNT) is a rare brain tumor found almost exclusively within the fourth ventricle. These grade I tumors were first included in the World Health Organization (WHO) Classification for the central nervous system in 20071. Since then, approximately 49 cases have been published.

There are no reported cases of RGNT within the third ventricle, although this tumor has also been described in the pineal region, the tectum and within the aqueduct. Supratentorial localization is quite rare, with only three published: one was found in the septum pellucidum, another within the optic nerve in neurofibromatosis type 1 (NF1) patient and one in a patient with multiple RGNT in the lateral ventricle. The authors report the first case series in the literature of RGNT occurring within the posterior third ventricle.

Type
Brief Communications
Information
Canadian Journal of Neurological Sciences , Volume 40 , Issue 6 , November 2013 , pp. 885 - 888
Copyright
Copyright © The Canadian Journal of Neurological 2013

References

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