Abstract
We report 3 patients with anterior cerebral artery (ACA) territory infarction, angiograms of whom demonstrated segmental dilatation of the homolateral A2 portion with no other abnormality at the acute phase. The dilatatory changes were found to have disappeared, when angiography was repeated 1–6 years after infarction. A reversible segmental dilatation of the ACA may be an important cause of ACA territory infarction.
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