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 CASE REPORT
Year : 2009  |  Volume : 57  |  Issue : 2  |  Page : 203--205

Adult medulloblastoma mimicking Lhermitte-Duclos disease: Can diffusion weighted imaging help?


Department of Radiodiagnosis, Dayanand Medical College and Hospital, Ludhiana, Punjab, India

Correspondence Address:
Puneet Mittal
Department of Radiodiagnosis, Dayanand Medical College & Hospital, Tagore Nagar, Civil Lines, Ludhiana, Punjab - 141 001
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0028-3886.51297

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Lhermitte-Duclos disease, also known as dysplastic cerebellar gangliocytoma, is a rare cerebellar benign tumor with characteristic appearance of thickened cerebellar folia giving a laminated or striated appearance, quite diagnostic of the condition. We had seen a patient with medulloblastoma with imaging findings suspicious for thickened cerebellar folia reminiscent of Lhermitte-Duclos disease. However, it showed patchy contrast enhancement and restricted diffusion on diffusion-weighted imaging, which are not typically associated with Lhermitte-Duclos disease. Presence of restricted diffusion proved to be a useful diagnostic feature for differentiation between the two lesions. This patient highlights the importance of obtaining all the MR imaging sequences in suspected Lhermitte-Duclos disease and histological diagnosis if there is doubt.






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Online since 20th March '04
Published by Wolters Kluwer - Medknow