ANATOMICAL VARIATIONS IN ANTERIOR CEREBRAL ARTERY IN HUMAN CADAVERS

2016 ◽  
Vol 4 (2.2) ◽  
pp. 2269-2272
Author(s):  
Smita B. Shinde ◽  
◽  
G. A. Shroff ◽  
Keyword(s):  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Anatomical Variations ◽  
Human Cadavers

Human fetal medial striate artery or artery of Heubner

2009 ◽  
Vol 3 (4) ◽  
pp. 296-301 ◽  
Author(s):  
Ljiljana Vasović ◽  
Sladjana Ugrenović ◽  
Ivan Jovanović
Keyword(s):  
Middle Cerebral Artery ◽  
Diagnostic Test ◽  
Cerebral Artery ◽  
Cerebral Circulation ◽  
Anterior Cerebral Artery ◽  
Anatomical Variations ◽  
Test Results ◽  
Terminal Part ◽  
The Brain

Object The authors describe some of the features of the medial striate branch or recurrent artery of Heubner (RAH). This structure has indisputable functional, neurological, and neurosurgical significance, and originates from the A1 and/or A2 segments of the anterior cerebral artery. Methods Microdissection of 94 human fetal specimens was performed. The RAH was observed in 97.3% (single in 71.6%, double in 25.1%, and triple in 3.3%) of the cases. Its origin was from A2 in 42.3% of specimens, from the A1–A2 junction in 25.7%, and from A1 in 20%. Results Five types and 14 subtypes of the RAH were identified, determined based on vessel origin and number. In its course, the RAH gave 1–12 branches, and the terminal part most frequently penetrated into the brain through the anterior perforated substance at the level of the sphenoid segment of the middle cerebral artery. The specimens with a single RAH fenestration, abnormal double RAH anastomosis, and unusual RAH origin and relationship to the surrounding vessels represented new data. Conclusions The authors' observations of common anatomical variations in the number and origin of the RAH, as well as its abnormalities, may assist neuroradiologists in the interpretation of diagnostic test results and neurosurgeons in performing procedures in the anterior cerebral circulation.

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.

A neurosurgical view of anatomical variations of the distal anterior cerebral artery: an anatomical study

2006 ◽  
Vol 104 (2) ◽  
pp. 278-284 ◽  
Author(s):  
Hasan Caglar Ugur ◽  
Gokmen Kahilogullari ◽  
Ali Firat Esmer ◽  
Ayhan Comert ◽  
Aysun B. Odabasi ◽  
...  
Keyword(s):  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Cerebral Arteries ◽  
Anatomical Study ◽  
Anatomical Variations ◽  
Main Trunk ◽  
Surgical Interventions ◽  
Parietal Lobes ◽  
Distal Anterior Cerebral Artery ◽  
Human Brains

Object The vascularization pattern of the anatomy of the distal anterior cerebral artery (ACA) remains a subject of debate. The authors provide detailed information about the distal ACA and shed light on issues concerning it that have not previously been adequately discussed. Methods Fifty adult human brains (100 hemispheres) were obtained during routine autopsies. Cerebral arteries were separately cannulated and injected with latex. The vascularization patterns of the cortical branches and the variations of the arteries were investigated. The authors found that the distal ACA supplied all the inner surfaces of the frontal and parietal lobes and a median of one third of the outer surfaces. The origin of the arteries from the main trunk and their exit angles affected the vascularization patterns of the hemispheres. The authors redefine controversial terminology regarding the callosomarginal artery. Conclusions In each hemisphere, the vascularization pattern of the distal ACA is different to a greater or lesser extent. An awareness of this fact will contribute significantly to surgical interventions.

scholarly journals Acute isolated anterior cerebral artery infarcts: A clinical – radiological study

2021 ◽  
Vol 26 (3) ◽  
pp. 459-464
Author(s):  
Sanjith Aaron ◽  
Divyan Pancharatnam ◽  
Amal Al Hashmi
Keyword(s):  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Anatomical Variations ◽  
National Institutes Of Health ◽  
Stroke Severity ◽  
Limb Weakness ◽  
Ct Angiogram ◽  
The Mean ◽  
Toast Classification ◽  
Stroke Centre

Background: The anterior cerebral artery (ACA) supplies many eloquent areas and can have anatomical variations making ACA strokes clinically and radiologically challenging. This study looks at the clinical and radiological features of isolated acute ACA strokes from a stroke centre in Oman. Methods: A retrospective study conducted over a 2 year period on ACA strokes presenting within 12 hours of symptom onset. TOAST classification was used for aetiology. National Institutes of Health Stroke Scale (NIHSS) and Modified Rankin Scale (mRS) were used to assess stroke severity. Fischer’s classification was used for assessing the arterial segments with CT angiogram. Heidelberg Bleeding Classification was used for haemorrhagic conversion. Results: Isolated ACA strokes constituted 25/1180 (2.1 %) of ischemic strokes. Males 15/25 (60%) Mean age was 68.4 years (Range 42 -97 years). Twenty eight percent of patients had earlier strokes. Hemiparesis (68%) was the commonest clinical presentation. Twenty percent had only lower limb weakness. Hypertension 22/25 (88%) followed by diabetes mellitus 12/25 (48%) was the commonest risk factor. The mean NIHSS was 9 (range 3 to 13). In 36% of patients there was progression of stroke. Plain CT Picked the infarct only in 6/24 (25%). Left side involvement in 18/25 (72%) Artery of Hubner was involved in 6/25 (24%); 44% had an embolic aetiology. There was no mortality and at discharge, 11/25 (44%) had mRS3 or less. Conclusions: In acute ACA infarcts a CT scan can miss the diagnosis in 74%. An embolic aetiology has to be considered in any Isolated ACA stroke and the outcome appears to be good.

Management of Proximal Anterior Cerebral Artery Aneurysms: Anatomical Variations and Technical Nuances

2016 ◽  
Vol 85 ◽  
pp. 85-95 ◽  
Author(s):  
Tanmoy Kumar Maiti ◽  
Shyamal Bir ◽  
Subhas Konar ◽  
Papireddy Bollam ◽  
Hugo H. Cuellar-Saenz ◽  
...  
Keyword(s):  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Anatomical Variations ◽  
Proximal Anterior Cerebral Artery

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.

STUDY OF ANATOMICAL VARIATIONS OF ANTERIOR CEREBRAL ARTERY

2016 ◽  
Vol 4 (3.3) ◽  
pp. 2778-2783
Author(s):  
Poorwa Baburao Kardile ◽  
◽  
Jaideo Manohar Ughade ◽  
Rajani A Joshi ◽  
◽  
...  
Keyword(s):  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Anatomical Variations

scholarly journals Bihemispheric Posterior Inferior Cerebellar Artery Occurring with an Azygos Anterior Cerebral Artery: Case Study

2014 ◽  
Vol 2014 ◽  
pp. 1-4
Author(s):  
Jamie Toms ◽  
Rishi Wadhwa ◽  
Sudheer Ambekar ◽  
Hugo Cuellar
Keyword(s):  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Pathological Condition ◽  
Anatomic Variation ◽  
Posterior Inferior Cerebellar Artery ◽  
Anatomical Variations ◽  
Vascular Abnormality ◽  
Cerebellar Artery ◽  
Azygous Anterior Cerebral Artery

Variations in intracranial vasculature are well known. We report a rare anatomic variation in a patient who underwent cerebral angiography for suspected intracranial aneurysm. Digital subtraction angiography revealed a bihemispheric posterior inferior cerebellar artery (PICA) and an azygous anterior cerebral artery (ACA). There was no evidence of any aneurysm or vascular abnormality. To our knowledge, this is the first reported case of a patient with a common PICA supplying both the cerebellar hemispheres and a common ACA supplying ACA territory bilaterally. It is important for the physician to be aware of these anatomical variations in order to differentiate a normal variant from a pathological condition.

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.

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