scholarly journals Anterior communicating artery duplication associated with a triplication of anterior cerebral artery – A rare anatomical variation

2020 ◽  
Vol 11 ◽  
pp. 36
Author(s):  
Francisco Matos Ureña ◽  
Jose Gregorio Matos Ureña ◽  
Saul Almeida ◽  
Nícollas Nunes Rabelo ◽  
Mauricio Mandel ◽  
...  
Keyword(s):  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Anatomical Variation ◽  
Anatomical Variations ◽  
Neurological Deficits ◽  
Systemic Hypertension ◽  
Prior History ◽  
Anterior Communicating Artery ◽  
Fisher Grade ◽  
Angio Ct

Background: The anterior communicating artery complex may presente several anatomical variations, and many abnormalities have been reported in radiologiacal and cadaveric studies. Case Description: The authors present a case of a 44-year-old Caucasian female, with a prior history of smoking and arterial systemic hypertension, admitted in the emergency department complaining of a sudden headache, nausea, and vomiting followed by tonic-clonic seizures. Computerized tomography (CT) and angiography (angio- CT) were carried out and showed Fisher Grade IV subarachnoid hemorrhage. Angio-CT revealed an anterior communicating artery (AComA) aneurysm. Minimally invasive craniotomy and microsurgical clipping were performed uneventfully. An unusual anatomical variation of the AComA complex characterized by duplication of the AComA associated with a triplication of anterior cerebral artery (ACA) was observed. The patient was discharged with no neurological deficits. Concluision: This unique anatomical variation of the AComA-ACA complex constitute risck factors for development and rupture of aneurysms.

scholarly journals Anatomical variations of circle of Willis - a cadaveric study

2017 ◽  
Vol 4 (4) ◽  
pp. 1249 ◽  
Author(s):  
Ramanuj Singh ◽  
Ajay Babu Kannabathula ◽  
Himadri Sunam ◽  
Debajani Deka
Keyword(s):  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Anterior Part ◽  
Cerebral Arteries ◽  
Anatomical Variations ◽  
Circle Of Willis ◽  
Anterior Communicating Artery ◽  
Surgical Interventions ◽  
Collateral Channel ◽  
The Right

Background: The circle of Willis (CW) is a vascular network formed at the base of skull in the interpeduncular fossa. Its anterior part is formed by the anterior cerebral artery, from either side. Anterior communicating artery connects the right and left anterior cerebral arteries. Posteriorly, the basilar artery divides into right and left posterior cerebral arteries and each join to ipsilateral internal carotid artery through a posterior communicating artery. Anterior communicating artery and posterior communicating arteries are important component of circle of Willis, acts as collateral channel to stabilize blood flow. In the present study, anatomical variations in the circle of Willis were noted.Methods: 75 apparently normal formalin fixed brain specimens were collected from human cadavers. 55 Normal anatomical pattern and 20 variations of circle of Willis were studied. The Circles of Willis arteries were then colored, photographed, numbered and the abnormalities, if any, were noted.Results: Twenty variations were noted. The most common variation observed is in the anterior communicating artery followed by some other variations like the Posterior communicating arteries, Anterior cerebral artery and posterior cerebral artery (PCA) was found in 20 specimens.Conclusions: Knowledge on of variations in the formation of Circle of Willis, all surgical interventions should be preceded by angiography. Awareness of these anatomical variations is important in the neurovascular procedures.

scholarly journals Thrombosis of the Azygos Anterior Cerebral Artery

2017 ◽  
Vol 2017 ◽  
pp. 1-3 ◽  
Author(s):  
Camila Soares Moreira de Sousa ◽  
Carla Lorena Vasques Mendes de Miranda ◽  
Marcelo Coelho Avelino ◽  
Breno Braga Bastos ◽  
Rafael Soares Moreira de Sousa ◽  
...  
Keyword(s):  
Rare Variant ◽  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Anatomical Variation ◽  
Anterior Communicating Artery ◽  
Functional Consequences ◽  
Interhemispheric Fissure

The azygos anterior cerebral artery is a rare variant, characterized by the absence of the anterior communicating artery and the union of two proximal segments of the anterior cerebral artery, forming a single trunk and ascending through the interhemispheric fissure. The incidence in the population varies from 0.3 to 2%. The presence of occlusion for this vessel causes bifrontal infarcts, with potentially devastating functional consequences, hence the importance of recognizing this anatomical variation in imaging exams.

scholarly journals Bilateral Infraoptic Origin of Anterior Cerebral Arteries: A Rare Anomaly and its Embryological and Clinical Significance

2006 ◽  
Vol 12 (2) ◽  
pp. 155-159 ◽  
Author(s):  
S. Chakraborty ◽  
N. F. Fanning ◽  
S. K. Lee ◽  
K.G. TerBrugge
Keyword(s):  
Clinical Significance ◽  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Cerebral Arteries ◽  
Anatomical Variations ◽  
Anterior Communicating Artery ◽  
Aneurysm Formation ◽  
Rare Anomaly

We describe a case of bilateral infraoptic origin of the anterior cerebral arteries associated with an anterior communicating artery (ACOM) aneurysm. Anatomical variations of the anterior cerebral artery (ACA) are common; however, bilateral infraoptic course of the anterior cerebral artery is extremely rare. Since an infraoptic course of the ACA is associated with ACOM aneurysm formation, an understanding of the cerebrovascular anatomy and embryology is important for appropriate management of the aneurysm.

scholarly journals Cerebral Angiographic Study of Anatomical Variations of Anterior Cerebral Artery Complex in Bangladeshi Population

2016 ◽  
Vol 32 (2) ◽  
pp. 56-62
Author(s):  
Md Amir Hossain ◽  
Sharif Uddin Khan ◽  
Kazimohibur Rahman ◽  
Sirajeeshafiqul Islam ◽  
Khairulkabir Patwary ◽  
...  
Keyword(s):  
Cerebral Artery ◽  
Internal Carotid ◽  
Anterior Cerebral Artery ◽  
Cerebral Arteries ◽  
Anatomical Variations ◽  
Anterior Communicating Artery ◽  
Terminal Branch ◽  
Complex Anatomy ◽  
Proximal Anterior Cerebral Artery ◽  
Bangladeshi Population

Background: Anterior cerebral artery is an important terminal branch of internal carotid artery. It forms the anterior component of circle of Willis along with the anterior communicating artery. It is known for the frequent variations. The knowledge of anatomical variations in anterior cerebral artery is of considerable help to clinicians and interventionists. Method: Morphology and variations of the anterior cerebral arteries and the anterior communicating artery were studied in 90 patients undergone digital subtraction angiography (DSA). Results: Variations were found in 33% (n=30). Variations of the segments in relation with size, course, communications and terminations of the anterior cerebral artery (ACA) were noted. These were divided into different groups like hypoplasia, aplasia, duplication and fenestrations. Hypoplasia/Aplasia of proximal anterior cerebral artery (A1) was 24.5% in right side and 9% in left side. Anterior communicating artery (AComA) was found absent in 9% and fenestration in 9%. Callosomarginal artery was found absent in 2.2% in right side and 4.5% in left side. In right callosomarginal artery 6% had abnormal origin and 3.5% abnormal in left side.Pericallosal artery was present 100% on both sides. Conclusion: Variations of anterior cerebral artery complex anatomy is found common in Bangladeshi population. Bangladesh Journal of Neuroscience 2016; Vol. 32 (2): 56-62

scholarly journals Digital Subtraction Angiography of Anterior Cerebral Artery Complex in Indian Population at Two Tertiary Super-Specialty Hospitals

2018 ◽  
Vol 4 (1) ◽  
pp. 12-17 ◽  
Author(s):  
Md Amir Hossain ◽  
Shakir Husain ◽  
Md Shohidul Islam ◽  
Muhammed Abdul Momen Khan
Keyword(s):  
Digital Subtraction Angiography ◽  
Cerebral Artery ◽  
Indian Population ◽  
Anterior Cerebral Artery ◽  
Anatomical Variations ◽  
Anterior Communicating Artery ◽  
Terminal Branch ◽  
Digital Subtraction ◽  
Complex Anatomy ◽  
Specialty Hospital

Background: Cerebral circulation has different variations in blood supply. Anterior cerebral artery is an important terminal branch of internal carotid artery. It forms the anterior component of circle of Willis along with the anterior communicating artery. The knowledge of anatomical variations in anterior cerebral artery is of considerable help to clinicians.Objective: The purpose of the study is to find out common anatomical variations of anterior cerebral artery complex by digital subtraction angiography in Indian population.Methodology: This descriptive cross-sectional study was conducted in the Neurointervention department of Max Super-specialty Hospital, New Delhi and Neo Multi-specialty Hospital, Noida, India during July 2016 to December 2016 for a period of six (06) months. Patients admitted in the Neurointervention department for digital subtraction angiography (DSA) were included in this study. Sampling technique was purposive. The angiogram machine was SIEMENS Artis Zee system and framing rate was 4f/sec. Morphology and variations of the anterior cerebral arteries and the anterior communicating artery were studied in 75 patients undergone cerebral DSA.Results: Variations were found in 48% (n=36). Variations of the segments in relation with size, course, communications and terminations of the anterior cerebral artery (ACA) were noted. These were divided into different groups like hypoplasia, aplasia, duplication and fenestrations. Hypoplasia/Aplasia of proximal anterior cerebral artery (A1) was 13.3% in right side and 5.3% in left side. Anterior communicating artery (AComA) was found absent in 10.7% and fenestration in 12%. Callosomarginal artery was found absent in 1.3% in right side and 5.3% in left side. In right callosomarginal artery 6.8% had abnormal origin and 4.2% abnormal in left side. Pericallosal artery was present 100% on both sides.Conclusion: Variations of anterior cerebral artery complex anatomy is found common in Indian population. Among them hypoplasia/aplasia is most commonJournal of National Institute of Neurosciences Bangladesh, 2018;4(1): 12-17

scholarly journals Enlarged anterior communicating artery masquerading as intracranial aneurysm

2020 ◽  
pp. 455-458
Author(s):  
Saja A. Albanaa ◽  
Zahraa F. Al-Sharshahi ◽  
Noor A. Hummadi ◽  
Noor K. Al-Waely ◽  
Rasha A. Alshakarchy ◽  
...  
Keyword(s):  
Management Strategy ◽  
Anterior Cerebral Artery ◽  
Anatomical Variation ◽  
Anatomical Variations ◽  
Vascular Lesion ◽  
Anterior Communicating Artery ◽  
Imaging Data ◽  
Common Site ◽  
New Findings

Background. The anterior communicating artery (ACoA) complex consists of the ACoA, the pre-and post-communicating segments of the anterior cerebral artery, and the recurrent artery of Heubner. It is the most common site for anatomical variations in the circle of Willis. Such variations can mimic intracranial aneurysms. Case description. A 30-year-old female presented with recurrent episodes of extreme headache and bilateral tinnitus. A brain computed tomography (CT) scan showed no significant lesions, while her CT-angiography (CTA) showed an enlarged vascular lesion at the ACoA, raising the suspicion for an ACoA aneurysm. A repeated CTA revealed a rare anatomical variation with a pattern of cross dominance in the ACoA complex; the left A1 and right A2 were dominant-enlarged, resulting in an enlargement of the ACoA. The presence of an ACoA aneurysm was hence excluded and the patient was managed conservatively. At 6-month follow-up, CTA showed no new findings.  Conclusion. ACoA enlargement can result from unequal hemodynamics around the ACoA complex, which may be mistaken for an aneurysm. A thorough study of the imaging data is of pivotal importance and may change the management strategy.

scholarly journals Gross anatomical study of recurrent artery of Huebner

2015 ◽  
Vol 04 (01) ◽  
pp. 005-011
Author(s):  
Sunitha Narayanan
Keyword(s):  
Cerebral Artery ◽  
Neurological Deficit ◽  
Anterior Cerebral Artery ◽  
Cerebral Aneurysms ◽  
Anatomical Study ◽  
Anatomical Variations ◽  
Anterior Communicating Artery ◽  
Lateral Part ◽  
Anterior Portion ◽  
Surgical Interventions

Abstract Background: Cerebral aneurysms frequently occur in the arterial complex composed of Anterior Cerebral Artery, Anterior Communicating Artery and Recurrent Artery of Huebner. Due to the anatomical variations in the origin and course of the Recurrent Artery of Huebner, surgical interventions in the anterior portion of circle of Willis can be complicated by obstruction or vascular damage to Recurrent Artery of Huebner, caused by improper clip placement. Objectives: To study the variations in the origin, number, course & termination of Recurrent artery of Huebner. Also the distance of origin of the Recurrent artery from the junction of Pre and Postcommunicating segment of Anterior Cerebral Artery was noted. Materials and methods: The study was conducted in 60 randomly selected brain specimens fixed in 10% formalin for 10 days in the Department of Anatomy. The Recurrent Artery was then carefully dissected and observations were made. Photographs were taken to document the observations. Results: The Recurrent artery of Huebner arose most frequently from the junction of Pre and Postcommunicating segment of Anterior Cerebral Artery (59.2%) and next frequently from the Postcommunicating segment of Anterior Cerebral Artery within 1mm from the junction of Pre and Postcommunicating segment of Anterior Cerebral Artery. It coursed more commonly anterior to the Precommunicating segment of Anterior Cerebral Artery in 80% cases. The artery terminated in the lateral part of anterior perforated substance in 96.7% of the specimens. Conclusions: The Recurrent artery should be routinely identified during clipping of the aneurysm of the Anterior Communicating Artery to prevent postoperative neurological deficit.

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.

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