[Serial magnetic resonance angiography in a case with XXXX of the CNS].

@entity1 @entity548 @entity1333 @entity1347 @entity134 @entity10
@entity1333 of the central nervous system (IAC) is an idiopathic type of @entity1333 , exclusively affecting small to medium-sized blood vessels of the central nervous system. We report serial angiographical findings, mainly demonstrated with magnetic resonance angiography (MRA) in a case of IAC. A 58-year-old-female came to our hospital because of a sudden @entity10 . Computed tomography (CT) did not show any particular findings. MRA 3 days after the onset revealed diffuse arterial dilatations and segmental stenoses of the middle and anterior cerebral arteries. However, these findings did not lead us to make a diagnosis of IAC. Two days later she was admitted with increased @entity10 and @entity548 in the left frontal lobe on CT. Subsequent MRA demonstrated remarkable changes such as dilatated main trunks with segmental stenoses. @entity134 pulse therapy was started after definite diagnosis of IAC. She improved gradually and was @entity10 -free 15 days after the onset. Nevertheless, follow-up MRA at 15 days revealed diffusely narrowed anterior and middle cerebral arteries with @entity1347 . Characteristic findings of @entity1333 showed improvement at 29 days and had disappeared at 73 days. The @entity1 discontinued corticosteroids and has remained free from @entity10 for the last 7 months.
