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Radiology, Vol 194, 699-703, Copyright © 1995 by Radiological Society of North America

ARTICLES

The striated cerebellum: an MR imaging sign in Lhermitte-Duclos disease (dysplastic gangliocytoma)

CC Meltzer, JG Smirniotopoulos and RV Jones
Department of Radiology, University of Pittsburgh Medical Center, Pa.

PURPOSE: To correlate the magnetic resonance (MR) imaging features of and histologic findings in Lhermitte-Duclos disease (LDD) (dysplastic gangliocytoma). MATERIALS AND METHODS: MR imaging and histologic data from eight patients with the diagnosis of LDD were retrospectively reviewed. Gross pathologic specimens were also available in one case. Contrast material-enhanced MR images were obtained in seven of the eight patients. RESULTS: At MR imaging, a non-enhancing mass in the cerebellar hemisphere was characterized by a striated pattern of hyperintensity on T2-weighted images and corresponding hypointensity on T1-weighted images, which represented the abnormally thickened folia. None of the masses demonstrated enhancement. CONCLUSION: Most other cerebellar masses destroy the folial pattern and show enhancement. The nonenhancing striated MR appearance of thickened folia in patients with LDD is distinctive and should suggest this diagnosis.


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