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American Journal of Neuroradiology, Vol 19, Issue 2 333-335, Copyright © 1998 by American Society of Neuroradiology

ARTICLES

Epidermoid tumor of the cerebellopontine angle: signal loss in the contralateral cistern

N Fujita, N Hirabuki, N Kashiwagi, Y Watanabe and H Nakamura
Department of Radiology, Osaka University Medical School, Suita-City, Japan.

We report a case of an epidermoid tumor of the right cerebellopontine angle (CPA) in which the contralateral CPA cistern showed abnormal, low signal intensity on T2-weighted fast spin-echo MR images. Diffusion- weighted images showed the epidermoid tumor of the right CPA extending to the prepontine cistern. The cause of the abnormal signal intensity was proved to be an artifactual signal loss due to cerebrospinal fluid flow by phase-contrast MR imaging.


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Iwayama, Naganawa, Ito, Fukatsu, Ikeda, Ishigaki, and Ichinose
High-Resolution MR Cisternography of the Cerebellopontine Angle: 2D versus 3D Fast Spin-Echo
AJNR Am. J. Neuroradiol., May 1, 1999; 20(5): 889 - 895.
[Abstract] [Full Text]


Copyright © 2008 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X