Quadruplicate A2 segment of anterior cerebral artery with duplication of the anterior communicating artery and aplasia of the left posterior communicating artery

2016 ◽  
Vol 61 (1) ◽  
Author(s):  
Agnieszka Wójtowicz ◽  
Monika Rybicka ◽  
Aleksandra Wojnarska ◽  
Mateusz K. Hołda ◽  
Mateusz Koziej ◽  
...  
Keyword(s):  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Posterior Communicating Artery ◽  
Anterior Communicating Artery ◽  
Left Posterior

Variation of Arteries Forming Circle of Willis in Adult Human Cadavers

2020 ◽  
Vol 42 (1) ◽  
pp. 17-20
Author(s):  
Jyoti Gautam ◽  
Bidur Adhikari ◽  
Rosha Bhandari ◽  
Anusuya Shrestha ◽  
Nirju Ranjit
Keyword(s):  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Cerebrovascular Disorders ◽  
Circle Of Willis ◽  
Posterior Communicating Artery ◽  
Arterial System ◽  
Anterior Communicating Artery ◽  
Fetal Origin ◽  
Left Posterior ◽  
Vascular Insufficiency

Introduction Circle of Willis is a large arterial anastomosis between internal carotid and vertebrobasilar arterial system. It is the principal collateral channel for constant blood flow to brain. Any changes in its morphology may cause vascular insufficiency of variable severity. Knowledge about its anomalies may elucidate occurrence of cerebrovascular disorders, its presentation, treatment, prognosis and prevention. MethodsAn observational study on 107 fresh cadavers was conducted at Maharajgunj Medical Campus from September 2016 to August 2017. After dissection of the scalp and removal of the vault and dura mater, the brain was obtained. Then the Circle of Willis was identified and observed for its completeness, symmetry, presence, origin and number of arteries forming it and the obtained data were documented, photographed and analyzed. ResultsOut of 107 cadavers, variations were noted among 15 (14%): out of which 10 were male and 5 female. Twelve cadavers had single variation while 3 had two variations. Accessory anterior cerebral artery was found in 7 (38.90%), fetal origin of right posterior communicating artery in 2 (11.10%), fetal origin of left posterior communicating artery in 4 (22.20%), early bifurcation of left posterior cerebral artery in 1 (5.60%), variant anterior communicating artery in 2 (11.10%), fused anterior cerebral artery in 1 (5.60%) and aneurysm in 1(5.60%) subjects were found. ConclusionVariations were noted among 15 cadavers (14%), 12 cadavers had single variation while 3 had two variations. The most common variation seen was accessory anterior cerebral artery found in 7 cadavers (38.90%). Most of the variations were found in midline anteriorly followed by right side.

Occlusion of an “accessory” distal anterior cerebral artery during treatment of anterior communicating artery aneurysms

1991 ◽  
Vol 74 (1) ◽  
pp. 133-135 ◽  
Author(s):  
Kevin Gibbons ◽  
Leo N. Hopkins ◽  
Roberto C. Heros
Keyword(s):  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Anterior Communicating Artery ◽  
Case Histories ◽  
Content Type ◽  
Anterior Communicating Artery Aneurysms ◽  
Artery Segment ◽  
Distal Anterior Cerebral Artery ◽  
Clip Occlusion ◽  
Fine Print

✓ Two cases are presented in which clip occlusion of a third distal anterior cerebral artery segment occurred during treatment of anterior communicating artery aneurysms. Case histories, angiograms, operative descriptions, and postmortem findings are presented. The incidence of this anomalous vessel is reviewed. Preoperative and intraoperative vigilance in determining the presence of this anomaly prior to clip placement is emphasized.

Analysis of Anterior Cerebral Artery Tortuosity: Association with Anterior Communicating Artery Aneurysm Rupture

2019 ◽  
Vol 122 ◽  
pp. e480-e486 ◽  
Author(s):  
Roger M. Krzyżewski ◽  
Kornelia M. Kliś ◽  
Borys M. Kwinta ◽  
Małgorzata Gackowska ◽  
Krzysztof Stachura ◽  
...  
Keyword(s):  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Artery Aneurysm ◽  
Aneurysm Rupture ◽  
Anterior Communicating Artery ◽  
Anterior Communicating Artery Aneurysm

Bilateral Internal Carotid to Anterior Cerebral Artery Anastomosis with Anterior Communicating Artery Aneurysm: Technical Case Report

2005 ◽  
Vol 57 (suppl_4) ◽  
pp. ONS-E400-ONS-E400 ◽  
Author(s):  
Kaya Kılıç ◽  
Metin Orakdöğen ◽  
Aram Bakırcı ◽  
Zafer Berkman
Keyword(s):  
Case Report ◽  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Cerebral Artery ◽  
Internal Carotid ◽  
Anterior Cerebral Artery ◽  
Artery Aneurysm ◽  
Anterior Communicating Artery

Abstract OBJECTIVE AND IMPORTANCE: The present case report is the first one to report a bilateral anastomotic artery between the internal carotid artery and the anterior communicating artery in the presence of a bilateral A1 segment, fenestrated anterior communicating artery (AComA), and associated aneurysm of the AComA, which was discovered by magnetic resonance angiography and treated surgically. CLINICAL PRESENTATION: A 38-year-old man who was previously in good health experienced a sudden onset of nuchal headache, vomiting, and confusion. Computed tomography revealed a subarachnoid hemorrhage. Magnetic resonance angiography and four-vessel angiography documented an aneurysm of the AComA and two anastomotic vessels of common origin with the ophthalmic artery, between the internal carotid artery and AComA. INTERVENTION: A fenestrated clip, introduced by a left pterional craniotomy, leaving in its loop the left A1 segment, sparing the perforating and hypothalamic arteries, excluded the aneurysm. CONCLUSION: The postoperative course was uneventful, with complete recovery. Follow-up angiograms documented the successful exclusion of the aneurysm. Defining this particular internal carotid-anterior cerebral artery anastomosis as an infraoptic anterior cerebral artery is not appropriate because there is already an A1 segment in its habitual localization. Therefore, it is also thought that, embryologically, this anomaly is not a misplaced A1 segment but the persistence of an embryological vessel such as the variation of the primitive prechiasmatic arterial anastomosis. The favorable outcome for our patient suggests that surgical treatment may be appropriate for many patients with this anomaly because it provides a complete and definitive occlusion of the aneurysm.

Endovascular treatment of anterior cerebral artery occlusions

2021 ◽  
pp. neurintsurg-2021-017735
Author(s):  
Mayank Goyal ◽  
Petra Cimflova ◽  
Johanna Maria Ospel ◽  
René Chapot
Keyword(s):  
Endovascular Treatment ◽  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Ct Perfusion ◽  
Correct Diagnosis ◽  
Motor Deficit ◽  
Anterior Communicating Artery ◽  
Routine Basis ◽  
Multiphase Ct ◽  
High Level

There are limited data on endovascular treatment (EVT) for anterior cerebral artery (ACA) occlusions. This review focuses on aspects related to ACA EVT: ACA anatomy, clinical and imaging findings, prognosis of ACA stroke, and ACA thrombectomy techniques. The ACA anatomy, and the regions supplied by the ACA, are highly variable; frequent anatomical variants include azygos ACA, triplicated ACA and fenestrations of the anterior communicating artery. ACA occlusions can be classified based on occlusion location, their continuity with other vessel occlusions (isolated ACA occlusion vs ACA occlusion as part of a carotid T occlusion) and etiology (primary—spontaneous ACA occlusion, vs secondary—spontaneous or iatrogenic due to clot fragmentation/migration). Symptoms of ACA stroke differ in severity and nature due to large inter-individual variations in territorial ACA blood supply. Generally, ACA strokes are severely disabling, and the typical clinical hallmark is a motor deficit of the contralateral lower extremity. Advanced imaging (CT perfusion, multiphase CT angiography) increases the likelihood of the correct diagnosis of ACA stroke and should be obtained on routine basis.Available data for ACA EVT suggest its feasibility and safety while clinical outcomes are often unfavorable with conservative management. Therefore, the potential benefit of EVT seems obvious. An optimized endovascular approach for ACA thrombectomy comprises the development and use of smaller and softer devices that can be delivered through small microcatheters with an optimized vector of force. Ultimately, generating high-level evidence for ACA EVT from randomized trials remains warranted.

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