Perfusion abnormalities in hemimegalencephaly.

Abstract:

INTRODUCTION:Cerebrovascular changes are rarely discussed in patients with hemimegalencephaly. These alterations have previously been associated with epileptical activity. CASE:We report the case of a 36-week gestation neonate presenting with total right hemimegalencephaly, as demonstrated by a magnetic resonance imaging (MRI) performed in the first days of life. Perfusion-weighted imaging displayed a clear hypervascularization of the right hemisphere. Diffusion-tensor imaging showed an arrangement of white matter fibers concentrically around the ventricle on the right hemisphere. AngioMRI showed an obvious asymmetry in the size of the middle cerebral arteries, with the right middle cerebral artery being prominent. The baby was free of clinical seizures during his first week of life. An electroencephalogram at that time displayed an asymmetric background activity, but no electrical seizures. CONCLUSION:Perfusion anomalies in hemimegalencephaly may not necessarily be related to epileptical activity, but may be related to vessel alterations.

journal_name

Neuropediatrics

journal_title

Neuropediatrics

authors

Wintermark P,Roulet-Perez E,Maeder-Ingvar M,Moessinger AC,Gudinchet F,Meuli R

doi

10.1055/s-0029-1237721

subject

Has Abstract

pub_date

2009-04-01 00:00:00

pages

92-6

issue

2

eissn

0174-304X

issn

1439-1899

journal_volume

40

pub_type

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