XXXX . Neuroimaging and clinicopathological correlation.

@entity1 @entity424 @entity39 @entity5 @entity75 @entity258
In 10 @entity1 with @entity424 , the @entity5 exhibited hyperdensity on computerized tomography (CT) scanning prior to contrast infusion and, with one exception, all @entity5 were @entity75 with the low densities suggesting @entity39 . Eighty percent of the @entity5 contained small calcifications. Characteristically, the @entity5 were well demarcated and demonstrated moderate to marked enhancement after the intravenous administration of contrast material. Angiograms obtained in some @entity1 showed mild @entity5 staining and absence of large feeding arteries. The degree of contrast enhancement, angiographic vascularity, and @entity5 stain was compared to the pathological anaplasia of the @entity5 . No correlation was observed. Of four @entity1 who were still alive during a follow-up period of 4 years or longer, three had recurrences with inoperable @entity5 ; the remaining @entity1 is without recurrence after craniospinal radiation. This same @entity1 belonged to a group of five @entity1 with a diagnosis of high-grade @entity424 , four of whom had recurrence. Follow-up CT accurately recorded the clinical course of each @entity1 . Annual routine follow-up examinations are proposed for @entity1 with @entity258 , and for those with high-grade @entity424 follow-up CT should be performed every 6 months. The characteristic appearance and behavior of these @entity5 include several distinctive features on angiographic and CT images.
