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KMID : 0942820120110020141
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Journal of Korean Brain Tumor Society
2012 Volume.11 No. 2 p.141 ~ p.144
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Meningioma of the Fourth Ventricle
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Han Jung-in
Kim Chang-Hyun
Moon Jae-Gon
Cho Tack-Geun
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Abstract
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Less than 50 cases of primary fourth ventricular meningioma are reported in literature. Most of them are hypo- to iso-signal intensity on T1-weighted images and iso- to mildly hyper-signal intensity on T2-weighted images compared with gray matter. Contrast enhancement is strong in all tumors, and the enhancement is homogeneous in 69% and heterogeneous in 31%. It could be harder to differentiate meningiomas of the fourth ventricle from ependymomas and choroid plexus papilloma. Most meningiomas in the fourth ventricle adhere to the choroid plexus. We present a new case and summarize features of magnetic resonance images.
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KEYWORD
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Meningioma, Fourth ventricle
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