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Wernicke's Encephalopathy: Atypical Manifestation at MR Imaging

Sang-Jin Baea, Ho Kyu Leea, Jae-Hong Leea, Choong Gon Choia and Dae Chul Suha

a From the Departments of Radiology (S.-J.B., H.K.L., C.G.C., D.C.S.) and Neurology (J-H.L.), Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea.



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  		FIG 1. March 22.

A, Contrast-enhanced T1-weighted axial image shows abscess cavity (arrows) in the right peritrigonal area.

B, T1-weighted sagittal image shows normal-appearing mamillary body (arrow).



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  		FIG 2. May 29.

A–C, FLAIR axial images.

A, Red nuclei of the midbrain are hyperintense compared with the brain parenchyma (solid arrows). White matter hyperintensity (open arrow) adjacent to the dilated right lateral ventricle is probably a change due to the abscess cavity.

B, Tectum of the midbrain also shows symmetric hyperintensities (arrows).

C, At the lower pons level, symmetrical hyperintense lesions are also detected in facial nuclei (solid arrows), vestibular nuclei (open arrows), and abducens nuclei (arrowheads) of the pontine tegmentum and cerebellar dentate nuclei (double arrows).

D, T1-weighted sagittal image shows atrophy of mamillary body (arrow).



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  		FIG 3. July 10.

A–C, FLAIR axial images show complete resolution of the previously detected unusual hyperintense lesions. Residual white matter hyperintensity is noted along the dilated right lateral ventricle.





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