ABNORMAL VASCULAR PATTERNS IN BENIGN INTRACRANIAL LESIONS: PSEUDOTUMORS OF THE BRAIN

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Abstract
A "hyperperfusion" pattern may occur in a variety of benign intracranial lesions or at the margin of a mass lesion as a result of cerebral compression with a loss of local autoregulation. A hypervascular pattern is observed which may be a perivascular punctate stain, and a gyral or ganglionic blush. There is no neovascularity, and the premature filling veins are normal regional veins that are more densely opacified than the neighboring veins because of the lack of dilution. Since these lesions are a result of altered pathophysiology, the vascular pattern will vary depending upon the time of cerebral damage.

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