A 5-year-old girl presenting with acute middle cerebral artery stroke
was diagnosed as having intracranial fibromuscular dysplasia by angiog
raphic findings of focal changes in the proximal right middle cerebral
artery and pathological dilatation of the right internal carotid arte
ry at the base of the skull, as well as dissection of at least one of
the middle cerebral artery branches and nonfilling of two or perhaps t
hree remaining middle cerebral artery segmental branches. Her clinical
condition improved after management of the increased intracranial pre
ssure. She did not receive any medication after discharge and had virt
ually no residual sequelae, Our case documents an unusual location and
age of onset of a patient with fibromuscular dysplasia.