Anterior communicating artery aneurysms with associated anomalies

Kwak, R; Niizuma, H; Hatanaka, Mitsuaki; Suzuki, Jirô

doi:10.3171/jns.1980.52.2.0162

Cited by 64 publications

(38 citation statements)

References 5 publications

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“…11 The most common anatomical variations of the A1 segment as previously reported, are hypoplasia with an incidence of 10-35%, fenestration 0.1-8% and an accessory MCA (0.2-4%). Kwak et al, 1980;Hillen 1987. 12 Aplasia, and low origin and infraoptic course of the A1 segment are quite rare in incidence Compton, 1962.…”

Section: Resultsmentioning

confidence: 99%

Anatomical variations of A1 and A2 segments of anterior cerebral artery.

Ligha¹

2017

IJFMI

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Imaging of the cerebral arterial circulation is key in neurological diseases and knowledge of anatomical variants is very important in both radiologic interpretation and interventional procedures. We present a case of A1 segment hypoplasia and azygos A2 anterior cerebral artery anomalies with the aim of discussing the normal anatomy, embryological perspectives and the most common variants of anterior cerebral artery.

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Section: Resultsmentioning

confidence: 99%

Anatomical variations of A1 and A2 segments of anterior cerebral artery.

Ligha¹

2017

IJFMI

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“…Aneurysms in such area are of different importance in terms of flow dynamics of anterior circulation, usual anatomic variations, deep interhemispheric location and perforator branches causing serious neurologic deficiency in case of damage (8). Vascular anomalies in Wills polygon are commonly related to aneurismal formation (9,10,11). AcoA and its anomalies have been discussed and described by various research makers.…”

Section: Discussionmentioning

confidence: 99%

“…Incompletion of plexiform anastomoses are thought to cause fusion anomalies (9,12). Most common anterior communicating artery complex anomalies or variations are; unilateral anterior cerebral artery hypoplasia, multiple vascular channels, dimples, fenestrations, duplications, fusion, median artery of the corpus callosum (MACC) and azygos anterior cerebral artery (10,11). Although a wide range of variations related to intracerebral aneurysms are notified in general terms, in the literature %26.6 percent of cases identified variant related to aneurysm location is A1 hyplosia accompanying anterior communication artery aneurysm (14).…”

Section: Discussionmentioning

confidence: 99%

Anterior communicating artery aneurysms and an unusual variations of anterior comminicating artery detected by 3-D CT angiography

Aydın¹,

Özkara²,

Özbek³

et al. 2014

Türk Beyin Damar Hast Derg

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Aneurysmal subarachnoid haemorrhage which has a serious mortality and morbitity ratio, occurs approximately 10/100.000 population per year and it is usally caused by rupture of a cerebral artery aneurysm. Aneurysms are classified saccular, fusiform or dissecan by morphological description. Vascular congenital anomalies of the cerebral vessels contribute to saccular aneurysm formation by increasing hemodynamic stress on the vessel wall. Although anterior communicating artery (ACoA) is the most seen site of vascular anomalies associated with aneurysmal formation, the agenesis of the anterior commmunicating artery is very rare. Here, we present unusual anatomical variations of ACoA detected by three-dimensional CT angiography after subarachnoid hemorrhage.

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“…Vascular anomalies have also been described to be associated with aneurysm SAH 12 , and their incidence in the circle of Willis is correlated with the occurrence of intracranial aneurysms 24,25 . The majority of the studies report vascular anomalies of the following arterial segments: the AcoA complex 26 , embryonic origin of the PCA 15,24 , PcoA infundibulum 15,27,28 , persistent trigeminal arteries 13,29 , and the vertebral artery (fenestration or anomalous termination) 14,15,30,31 . There is a great difference in the incidence related by these different authors concerning the same vascular anomaly.…”

Section: Discussionmentioning

confidence: 99%

Vascular Anomalies and the Risk of Multiple Aneurysms Development and Bleeding

et al. 2002

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The pathogenesis of aneurysmal subarachnoid hemorrhage is still debated and the prognosis remains severe, especially in multiple aneurysms, where the therapeutic management is complex. The aim of this study was to look for vascular anomalies and assess their relationship with aneurysm formation and bleeding in patients with multiple intracranial aneurysms. A prospective angiographical review was performed on 141 patients with multiple intracranial aneurysms seen from 1992 to 2000. Three hundred and fifty three aneurysms were studied. In 88% of the patients vascular anomalies were found. The most common were: asymmetric caudal basilar fusion (43.2%), variations of the anterior communicating artery (AcoA) complex (31.2%), symmetric caudal basilar fusion (26.2%), antero-inferior cerebellar artery-postero-inferior cerebellar artery (AICA-PICA) (15.6%), extradural origin of the PICA (10.6%), cavernous origin of the ophthalmic artery or dorsal ophthalmic artery (dOPH) (3.5%). Some aneurysm locations were associated with a high rate of vascular anomalies, e.g.: posterior cerebral aneurysm with asymmetric caudal fusion, AcoA aneurysm with AcoA complex variation, basilar tip aneurysm with extradural PICA or symmetric caudal fusion, PI CA aneurysm with AICA-PICA, para-ophthalmic aneurysm with dOPH. These aneurysm locations bled proportionally more frequently when associated with the related vascular anomaly. In conclusion, these results suggest that vascular anomalies are associated with aneurysm development and bleeding.

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Anterior communicating artery aneurysms with associated anomalies

Cited by 64 publications

References 5 publications

Anatomical variations of A1 and A2 segments of anterior cerebral artery.

Anatomical variations of A1 and A2 segments of anterior cerebral artery.

Anterior communicating artery aneurysms and an unusual variations of anterior comminicating artery detected by 3-D CT angiography

Vascular Anomalies and the Risk of Multiple Aneurysms Development and Bleeding

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