The accessory middle cerebral artery (AMCA). Diagnostic and therapeutic consequences

Abanou, A.; Lasjaunias, P.; Manelfe, C.; López-Ibor, L.

doi:10.1007/bf01654463

Cited by 43 publications

(21 citation statements)

References 4 publications

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“…In some cases, two MCAs arise from the ICA, such as accessory MCA or duplicated MCA. 2–4) In MCA fenestration, MCA originates as a single trunk, but there is a presence of a fenestration. 7) The term, duplicated origin of the MCA indicates an anomaly wherein, two MCA arise separately from the terminal segment of ICA and fuse to form an arterial ring.…”

Section: Anomalies Of the Mcamentioning

confidence: 99%

Anomalies of the Middle Cerebral Artery

Uchiyama

2017

Neurol. Med. Chir.(Tokyo)

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There are several anomalies of the middle cerebral artery (MCA) in humans, such as accessory MCA, duplicated MCA, fenestration of MCA, and duplicated origin of MCA. Recently, unfused or twig-like MCA, which indicates MCA trunk occlusion with collateral plexiform arterial network, have been reported. During the embryonic stage, MCA is thought to generate from plexiform arterial twigs arising from the anterior cerebral artery, and these twigs form the definitive MCA by fusion and regression at the end of the development stage. Any interruption during the fusion of the arterial twigs may result in MCA anomalies, and the unfused or twig-like MCA, especially, is hypothesized to be the persistent primitive arterial twigs. Clinically, it is challenging to differentiate the unfused or twig-like MCA from unilateral moyamoya disease, in which stenotic change begins at the MCA. The knowledge of the anomalies of the MCA is important to perform a safe surgical or endovascular intervention.

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Section: Anomalies Of the Mcamentioning

confidence: 99%

Anomalies of the Middle Cerebral Artery

Uchiyama

2017

Neurol. Med. Chir.(Tokyo)

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“…Although some reports have affirmed that the DMCA is a pure cortical vessel without perforating arteries,22 other authors have reported that the DMCA and the main MCA have perforating arteries to the anterior perforated substance 3. The DMCA had perforating arteries in three of four cases studied by Komiyama et al , while the main MCA had perforating arteries in all four cases 3 , 20…”

Section: Discussionmentioning

confidence: 98%

“…Abanou et al reported that the DMCA and the accessory MCA that originates near the anterior communicating artery provide cortical supplies to the orbito-frontal area, and sometimes to the anterior temporal area 22. Gibo et al described a patient who had both a duplicated and an accessory MCA in which the duplicated artery was distributed to the temporopolar, anterior, and middle temporal areas 23.…”

Section: Discussionmentioning

confidence: 99%

Duplicated middle cerebral artery

Pérez

Machado²,

Scherle³

et al. 2009

Case Reports

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Duplicated middle cerebral artery (DMCA) is an anomalous vessel arising from the internal carotid artery. The incidence DMCA is relatively law, and an association between this anomaly and cerebral aneurysms has been documented. There is a controversy whether DMCA may have perforating arteries. This is an important fact to consider in aneurysm surgery. We report the case of a 34-year-old black woman who suffered a subarachnoid hemorrhage and the angiography a left DMCA, and an aneurysm in an inferior branch of the main MCA. The DMCA and the MCA had perforating arteries. The aneurysm was clipped without complications. The observation of perforating arteries in our patient confirms that the DMCA may have perforating arteries. This is very important to be considered in cerebral aneurysms surgery. Moreover, the DMCA may potentially serve as a collateral blood supply to the MCA territory in cases of MCA occlusion.

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“…10] Aus der einzigen Trifurkation der A. carotis interna unseres Untersuchungsgutes entsprangen die A. cerebri anterior und 2 Stämme der MCA. Vom Versorgungsge biet ausgehend, handelt es sich dabei nicht um eine Arteria cerebri media accessoria, die ja nur die laterale orbitale Fläche des Frontallappens versorgt [7,26,27], sondern nach der Beschreibung von Teal et al [28] und Gibo et al [9] um eine Verdoppelung der MCA (Abb.4). Derartige Duplikationen wurden schon früher von Longo [29] und Adachi [30] als ausserordentliche Sonderfälle beschrie ben.…”

Section: Abb 2 Facies Superoiateralis Hemispherii Kortikale äSte Nachunclassified

Über Trifurkationen der Arteria cerebri media

Anderhuber

Weiglein²,

Pucher³

1990

Cells Tissues Organs

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The furcation types of 100 human middle cerebral arteries (MCA) were investigated. Considering the physiological flow characteristics in furcations, a distinct definition for a bifurcation and a trifurcation was found. The common ramification type of the human MCA is the bifurcation. Trifurcations are very rare and we found them only in the proximal parts of the MCA. In 7 of the 100 cases a trifurcation was found at the main division of the MCA in 3 cases a secondary trunk trifurcated. Quadro- and pentafurcations according to the hydrodynamic definitions were not observed at all. Only in 1 case did the internal carotid artery trif urcate into the anterior cerebral artery a superior trunk and an inferior trunk of the MCA.

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The accessory middle cerebral artery (AMCA). Diagnostic and therapeutic consequences

Cited by 43 publications

References 4 publications

Anomalies of the Middle Cerebral Artery

Anomalies of the Middle Cerebral Artery

Duplicated middle cerebral artery

Über Trifurkationen der Arteria cerebri media

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