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Clinical and Biological Aspects of Leukodystrophies

Leuko-Araiosis

Verny M.a · Duyckaerts C.a · Pierot L.b · Hauw J.-J.a

Author affiliations

a Laboratoire de Neuropathologie R. Escourolle, and b Service de Neuroradiologie, Hôpital de la Salpêtrière, Paris, France

Related Articles for ""

Dev Neurosci 1991;13:245–250

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Article / Publication Details

First-Page Preview
Abstract of Clinical and Biological Aspects of Leukodystrophies

Published online: December 16, 1991
Issue release date: 1991

Number of Print Pages: 6
Number of Figures: 0
Number of Tables: 0

ISSN: 0378-5866 (Print)
eISSN: 1421-9859 (Online)

For additional information: http://www.karger.com/DNE

Abstract

Leuko-araiosis is an unspecific radiologic sign, seen with CT scan or with MRI. It can be found as well in normal elderly persons as in pathological conditions. For the sake of clarity, CT scan and MRI images have to be distinguished. CT leuko-araiosis is linked with vascular risk factors and with age. The situation is more complex for MRI leuko-araiosis (likely on account of the higher sensitivity of MRI). Some images (caps and rims), frequently seen in normal, even young, individuals, are more frequent in aging. On the contrary, abnormal images at a distance from the ventricle are more difficult to interpret. Some of them are due to pathological well defined conditions (small infarcts, Binswanger''s disease, cysts, plaques). Others may be secondary to remote pathologies (such as infarcts). Others are due to little specific conditions, such as perivascular dilatations (''état criblé'' due to brain vasogenic edema, or to brain atrophy whatever its cause, and more frequently seen in the elderly). Other changes, such as incomplete infarction or myelin pallor with gliosis, have been described. At last, in some cases, no clearcut pathological lesion could be found. Leuko-araiosis may be present in primary degenerative dementia of the Alzheimer type, but it is neither necessary nor sufficient to establish the diagnosis of Alzheimer''s disease, and it does not seem more frequent than in elderly controls. The mechanism of leuko-araiosis in Alzheimer''s disease is likely multifactorial (for example, cerebral atrophy, amyloid angiopathy, associated hypertensive arteriolosclerosis could be involved). The relationship between leuko-araiosis, myelin pallor and white matter atrophy is poorly understood, and remains to be studied.

© 1991 S. Karger AG, Basel


Article / Publication Details

First-Page Preview
Abstract of Clinical and Biological Aspects of Leukodystrophies

Published online: December 16, 1991
Issue release date: 1991

Number of Print Pages: 6
Number of Figures: 0
Number of Tables: 0

ISSN: 0378-5866 (Print)
eISSN: 1421-9859 (Online)

For additional information: http://www.karger.com/DNE


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