Type 4 persistent primitive olfactory artery associated with contralateral accessory middle cerebral artery arising from the fenestrated segment of the distal anterior cerebral artery

2021 ◽  
Author(s):  
Akira Uchino ◽  
Shoichiro Ishihara
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Accessory Middle Cerebral Artery ◽  
Distal Anterior Cerebral Artery

The Accessory Middle Cerebral Artery: Anatomic Report

2008 ◽  
Vol 63 (suppl_1) ◽  
pp. ONS10-ONS14 ◽  
Author(s):  
Cassius V.C. Reis ◽  
Joseph M. Zabramski ◽  
Sam Safavi-Abbasi ◽  
Ricardo A. Hanel ◽  
Pushpa Deshmukh ◽  
...  
Keyword(s):  
Middle Cerebral Artery ◽  
Moyamoya Disease ◽  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Inferior Frontal Gyrus ◽  
Cerebral Aneurysms ◽  
Optic Chiasm ◽  
Inferior Surface ◽  
Increased Risk ◽  
Accessory Middle Cerebral Artery

Abstract Objective: An accessory middle cerebral artery (MCA) usually originates between the A1 and proximal A2 segment of the anterior cerebral artery, reaches the sylvian fissure, and supplies the territory of the MCA. This anomaly has been associated with cerebral aneurysms and Moyamoya disease. We report an accessory MCA arising from the A2 segment. Methods: A cadaveric head, fixed in formalin solution and injected with red and blue silicone on its vascular tree to trace intracranial and extracranial vessels, was dissected. Results: An accessory MCA was found arising from the A2 segment of the anterior cerebral artery and feeding the basal and inferior surface of the inferior frontal gyrus. In our specimen, the vessel was associated with intracranial aneurysms at other locations. Conclusion: Although anomalies of the MCA are rare, neurosurgeons must be familiar with such anatomic variations. An accessory MCA can be associated with Moyamoya disease and aneurysms at its junction with the anterior cerebral artery. Patients with this anomaly may, therefore, have an increased risk for developing aneurysms and other neurovascular complications. By obstructing the surgical view, an accessory MCA may increase the difficulty of exposing lesions in the vicinity of the optic chiasm.

Accessory middle cerebral artery

1974 ◽  
Vol 41 (2) ◽  
pp. 248-251 ◽  
Author(s):  
Tohru Watanabe ◽  
Makoto Togo
Keyword(s):  
Central Nervous System ◽  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Content Type ◽  
Accessory Middle Cerebral Artery ◽  
The Central Nervous System ◽  
Horizontal Portion ◽  
Perforating Arteries ◽  
Fine Print

✓ An accessory middle cerebral artery was demonstrated in the carotid angiograms of four patients; it originated from the horizontal portion of the anterior cerebral artery, and in two, gave rise to perforating arteries. None of the accessory arteries was associated with an intracranial aneurysm or anomaly of the central nervous system.

scholarly journals Distal Anterior Cerebral Artery Mirror Aneurysms and Middle Cerebral Artery Aneurysms

2006 ◽  
Vol 46 (9) ◽  
pp. 438-440 ◽  
Author(s):  
Cem DINC ◽  
Ahmet Celal IPLIKCIOGLU ◽  
Kerem BIKMAZ ◽  
Serkan KOSDERE ◽  
Yüksel NAVRUZ
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Distal Anterior Cerebral Artery ◽  
Middle Cerebral Artery Aneurysms

scholarly journals Ruptured Anterior Cerebral Artery Aneurysm at the Origin of the Accessory Middle Cerebral Artery

2011 ◽  
Vol 51 (9) ◽  
pp. 645-648 ◽  
Author(s):  
Yukihiro WAKABAYASHI ◽  
Yuzo HORI ◽  
Yayoi KONDOH ◽  
Tomoshige ASANO ◽  
Akira YAMADA ◽  
...  
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Artery Aneurysm ◽  
Accessory Middle Cerebral Artery ◽  
Anterior Cerebral Artery Aneurysm ◽  
Cerebral Artery Aneurysm

Ruptured Aneurysm at the Origin of the Accessory Middle Cerebral Artery: Case Report

Neurosurgery ◽  
1990 ◽  
Vol 26 (2) ◽  
pp. 320-322 ◽  
Author(s):  
Satoshi Kuwabara ◽  
Hiroki Naitoh
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Relevant Literature ◽  
Vascular Anomaly ◽  
Ruptured Aneurysm ◽  
Accessory Middle Cerebral Artery ◽  
Horizontal Portion ◽  
The Brain ◽  
Perforating Arteries

Abstract The accessory middle cerebral artery is a rare vascular anomaly of the brain. We describe a case of a ruptured aneurysm at the junction of the accessory middle cerebral artery and the horizontal portion of the anterior cerebral artery. The lesion was demonstrated by angiography and confirmed at surgery. No perforating arteries arising from this accessory artery were found. There have been only four previous reports of aneurysms located at the origin of the accessory middle cerebral artery. The relevant literature is briefly reviewed.

Dissecting aneurysms of the anterior cerebral artery and accessory middle cerebral artery. Case report

1997 ◽  
Vol 20 (2) ◽  
pp. 145-148 ◽  
Author(s):  
Yasunari Otawara ◽  
Michiyasu Suzuki ◽  
Miyuki Abe ◽  
Nobuhiko Tomizuka ◽  
Akira Ogawa
Keyword(s):  
Case Report ◽  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Accessory Middle Cerebral Artery ◽  
Dissecting Aneurysms

Anomalies and Variations of the Middle Cerebral Artery : A Micro anatomical Study

Neurosurgery ◽  
1988 ◽  
Vol 22 (6P1-P2) ◽  
pp. 1023-1027 ◽  
Author(s):  
Felix Umansky ◽  
Manuel Dujovny ◽  
James I. Ausman ◽  
Fernando G. Diaz ◽  
Haresh G. Mirchandani
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Internal Carotid ◽  
Polyester Resin ◽  
Anterior Cerebral Artery ◽  
Anatomical Study ◽  
Clinical Implications ◽  
Main Trunk ◽  
Brain Hemispheres ◽  
Accessory Middle Cerebral Artery

Abstract The microvascular anatomy of the main trunk and divisions of the middle cerebral artery was studied in 104 unfixed brain hemispheres injected with polyester resin and dissected under the operating microscope. The following anomalies and variations of the middle cerebral artery were found: fenestration (1 case; 1%), located on the first 4 mm of the main trunk of the middle cerebral artery; duplication (1 case; 1%). with vessels arising from the internal carotid artery; accessory middle cerebral artery (2 cases; 2%). originating on the A, segment of the anterior cerebral artery; single-trunk type of middle cerebral artery (4 cases; 4%), with no division of its main trunk; quadrifurcation (4 cases; 4%), in which the main trunk of the middle cerebral artery divided into four secondary trunks. The clinical implications of these anatomical findings are discussed, and photographs of representative specimens illustrate the anomalies.

scholarly journals Unruptured distal anterior cerebral artery mirror aneurysms associated with ruptured middle cerebral artery aneurysm: Case report

2020 ◽  
Vol 77 (7) ◽  
pp. 746-750
Author(s):  
Vladimir Jovanovic ◽  
Lukas Rasulic ◽  
Vojin Kovacevic ◽  
Aleksandar Janicijevic ◽  
Filip Vitosevic ◽  
...  
Keyword(s):  
Case Report ◽  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Artery Aneurysm ◽  
Middle Cerebral Artery Aneurysm ◽  
High Tendency ◽  
Interventional Neuroradiologist ◽  
Distal Anterior Cerebral Artery ◽  
Cerebral Artery Aneurysm

Introduction. Distal anterior cerebral artery (DACA) aneurysms, also known as pericallosal aneurysms are rare, while aneurysms in mirror position are extremely rare. These aneurysms have high tendency for rupture (PHASES score is always > 4). In more than a half of the patients with the DACA aneurysm rupture, imaging reveals intracerebral hematoma which is a predictor of poor outcome. Case report. A 49- year-old female patient was treated endovascularly in other institution, due to middle cerebral artery aneurysm (MCA) rupture, when the two small bilateral aneurysms at the distal segments of anterior cerebral artery (ACA) were revealed, left one measuring 4.5 mm and the right one measuring 6 mm in size, with the aneurysmal neck width of 3 mm and 4 mm, respectively. The decision was made by the interventional neuroradiologist only to treat the bleeding MCA aneurysm immediately. The patient was referred to our department six months later, and it was decided to perform microsurgical occlusion of the remaining DACA aneurysms. Unilateral interhemispheric approach was chosen to reach the distal ACAs and aneurysms at pericallosal-callosomarginal junction were clipped and completely excluded from the circulation. Conclusion. Management of DACA aneurysms is a surgical chellenge, even for experienced neurosurgeons. It is controversial whether these should be surgically clipped or coiled endovascularly, especially in cases like this one when a same-stage, endovascular coiling might look like a perfect approach. Surgical treatment should be prompt due to their tendency to early rupture. Careful evaluation for multiplicity is mandatory.

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