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      Abnormalities of cerebellar foliation and fissuration: classification, neurogenetics and clinicoradiological correlations.

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      Neuroradiology
      Springer Nature

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          Abstract

          Several genes have been found to influence the different cells involved in the processes of foliation and fissuration in the mouse and rat cerebellum. In the light of these new concepts and on the basis of the imaging findings in 42 patients, a classification is proposed for abnormalities of foliation and fissuration. On the basis of recent genetic and experimental evidence on mechanisms which control the origin of the cerebellum, it is suggested that abnormalities of foliation and fissuration form a single group, with a spectrum of severity. Some patients have only abnormal fissuration of the anterior lobe (type 1a) and others additional dysplasia of the anterior and part of the posterior lobe (type 1b). Extension of abnormalities into the hemispheres is often seen in the latter group. A second group has vermian and hemisphere abnormalities (type 2). In addition to the malformation of the anterior lobe of the vermis, three different hemispheric lesions can be seen in this group: cortical dysgenesis, hypertrophy of the cerebellar cortex, and malorientation of the folia. The mild abnormalities (type 1a) can be considered an incidental observation without clinical relevance. The moderate and severe cerebellar anomalies (type 1b and 2) are always associated with cerebellar symptoms and/or signs.

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          Author and article information

          Journal
          Neuroradiology
          Neuroradiology
          Springer Nature
          0028-3940
          0028-3940
          Aug 2002
          : 44
          : 8
          Affiliations
          [1 ] University Hospital, Department of Radiology, Herestraat 49, 3000 Leuven, Belgium. philippe.demaerel@uz.kuleuven.ac.be
          Article
          10.1007/s00234-002-0783-1
          12185541
          c6193ee4-4611-4710-bb97-5c4781616d86
          History

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