Stroke associated with glioblastoma.

Several months after onset of typical stroke syndromes, two patients were found to harbor a glioblastoma multiforme in the area of infarction. Arteriographic and late CT studies suggested that one neoplasm caused parenchymal compressive occlusion of a sylvian branch mimicking embolism and the other entwined the origin of the middle cerebral artery in the leptomeninges simulating atherothrombosis.