PMID: 15236123Jul 6, 2004Paper

Frequency of vascular variations and anomalies accompanying intracranial aneurysms

Tanısal ve girişimsel radyoloji : Tıbbi Görüntüleme ve Girişimsel Radyoloji Derneği yayın organı
Sinem KarazincirErkan Sahin

Abstract

Investigation of the sites of intracranial aneurysms and incidence of associated congenital variations or anomalies. One hundred and ninety cerebral angiography examinations that were positive for aneurysm were evaluated retrospectively. Fourteen cases with vasospasm were excluded and the remaining 176 patients were assessed for the location of the aneurysm and co-incidental vascular variations and/or anomalies. There were two observers in the study, one of whom was an experienced vascular radiologist. The most frequent locations of aneurysms were the supraclinoid internal carotid artery (32%, n=74), anterior communicating artery (30%, n=68), and middle cerebral artery bifurcation (23%, n=52). Twenty-eight patients (17%) had multiple aneurysms. Ninety-one (52%) patients had a vascular anomaly or variation. Hypoplasia or agenesis of A1 segment of the anterior cerebral artery was found in 48 patients, an azygous anterior cerebral artery in 1, a frontoorbital artery in 1, a duplicated middle cerebral artery in 1, early bifurcation of the middle cerebral artery in 9, persistent fetal origin of the posterior cerebral artery in 26, fenestration of P1 segment of posterior cerebral artery in 1, agenesis of P1 segment of posterior cereb...Continue Reading

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