Five Cases of Angiographically Occult Arteriovenous Malformation

ABSTRACT

Five cases presenting with hemiparesis, disturbed consciouness, and visual dimness gave no history suggestive of subarachnoid or intracerebral hemorrhage. Carotid angiograms were performed, and in each case failed to demonstrate a vascular malformation. The CT scans in five cases showed intracerebral hematoma that could suggest vascular malformation as a diagnostic possibility. Surgical exploration was done in each case and pathological features revealed a arteriovenous malformation in each specimen.