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NEUROPATHOLOGICAL STUDIES ON TWO CASES OF CONGENITAL MUSCULAR DYSTROPHY, WITH SPECIAL REFERENCE TO MORPHOLOGICAL CHARACTERISTICS OF MICROPOLYGYRIA FOUND IN THE CEREBRAL AND CEREBELLAR CORTEX Yoshisuke Ogasawara 1 , Katumi Ito 1 , Kunshi Murofushi 1 1National Musashi Sanatorium pp.451-457
Published Date 1976/5/1
DOI https://doi.org/10.11477/mf.1406203879
  • Abstract
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The characteristic features of micropolygyriawere demonstrated in the cerebral and cerebellargray matter of two cases, 5 and 16 years old males,of congenital muscular dystrophy. (Fokuyama type).

The micropolygyria of the cerebral cortex showedan undifferentiated cytoarchitecture, e. g. statusverrucosus deformis. On the surface of corticalmolecular layer, subpial mesenchymal fibres,tangential myelin fibres and marginal glial fibreswere observed to be still proliferated even at thestages examined and all the fibres were caved intothe cortical cell layer associated with the molecularlayer, without secondary sulcus formation. It isproposed that micropolygyria without secondarysulcus formation described in the present paper isnamed as "pachygyric micropolygyria", whilefour-layered type of micropolygyria with normalsulcus formation is "eugyric micropolygyria".

On the other hand, micropolygyria of the cerebel-lar cortex was found to be consisted of varioussized fragments in which basic structures of thecerebellum were preserved. On a part of surfaceof the cerebellar cortex the cytoarchitecture of celllayers was shown in inverse order. The Purkinjecell were irregularly migrated and the externalgranular layer remained in the molecular layershowing ectopic features. Tangential myelin fibres,connecting with fibres of the folial white matter,were observed to exist on the surface of the internalgranular layer.


Copyright © 1976, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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