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Escrito por Dr. Jesús García Ruiz
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Alteración o rarefacción de la sustancia blanca periventricular, que aparece hipodensa y con márgenes mal definidos en la tomografía computarizada de pacientes con demencia vascular. <(F.): Leucoaraïoise: anomalies diffuses de la substance blanche cérébrale, décelées par tomodensitométrie ou imagerie par résonance magnétique. Dénuée de spécificité, la l. s'observe chez les hypertendus, dans certaines démences telles les maladies d'Alzheimer et de Binswanger mais aussi chez des sujets qui sont indemnes de ces affections. <(In.): Leukoaraiosis: descriptive term introduced in 1987 by Hachinski and colleagues to indicate the periventricular white matter MR hyperintensities frequently found in elderly people. It literally means "rarified white matter", and is most frequently an incidental finding unrelated to any clinical manifestations. The lesions of the disorder were originally called UBOs unidentified bright objects. The condition should be distinguished from subcortical atherosclerotic leukoencephalopathy, most likely a similar but more severe condition that may have neurological or behavioural signs. At CT an increased hypodensity of the white matter is observed while at MR a patchy diffuse T2 hyperintensity is observed. FUENTES DE INFORMACION BIOMEDICA: TERMINOS RELACIONADOS:
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Actualizado ( Martes, 15 de Febrero de 2011 10:10 )
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