Ruptured aneurysm at a duplicated middle cerebral artery with accessory middle cerebral artery

Uchino, Masafumi; Kitajima, Satoru; Sakata, Yoshihito; Honda, Masashi; Shibata, Iekado

doi:10.1007/s00701-004-0353-x

Cited by 42 publications

(33 citation statements)

References 2 publications

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“…In most of these cases, the DMCAs were type B. However, one aneurysm associated with a DMCA arose from the trunk of the DMCA 16) . Another aneurysm was associated with a type A DMCA 12) .…”

Section: Clinical Significancementioning

confidence: 98%

“…If the aneurysm arises between the two M2 vessels originating at the carotid terminal site, the medial lenticulostriate perforators may be in close proximity and must be protected during dissection and clipping 10) . The DMCA may also play an important role in supplying collateral blood flow to the frontal lobe and basal ganglia through the perforating arteries 16) . However, it does not seem to supply significant flow to the main MCA territory.…”

Section: Clinical Significancementioning

confidence: 99%

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Middle Cerebral Artery Duplication : Classification and Clinical Implications

Chang

Kim

2011

J Korean Neurosurg Soc

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Objective : Although there are several explanations for a duplicated middle cerebral artery (DMCA), its embryological origin is still an open question. We reviewed these anomalous vessels to postulate a theory of their different origins, sizes, and courses. Methods : A retrospective review of 1,250 cerebral angiographies, 1,452 computed tomography (CT)-angiographies, and 2,527 magnetic resonance (MR)-angiographies was performed to identify patients with DMCA. Results : Twenty-five patients had 25 DMCAs. Conventional angiography detected nine patients with DMCA (9/1250, 0.72%), MR-angiography detected seven patients with DMCA (7/2527, 0.28%), and CT-angiography detected nine patients with DMCA (9/1452, 0.62%). The DMCAs originated near the internal carotid artery terminal in eight patients (type A), and between the origin of the anterior choroidal artery and the terminal internal carotid artery in 17 patients (type B). The diameters of the eight type A DMCAs were the same or slightly smaller than those of the other branch of the DMCA. All type A DMCAs showed a course parallel to that of the other branch of the DMCA. The diameters of the 17 type B DMCAs were the same, slightly smaller, or very much smaller than that of the other branch of the DMCA. Nine type B DMCAs showed parallel courses, and the other eight curved toward the temporal lobe. Conclusion : The two branches of the type A DMCAs can be regarded as early bifurcations of the MCA. The branches of the type B DMCAs had parallel courses or a course that curved toward the temporal lobe. The type B DMCA can be regarded as direct bifurcations of the MCA trunk or the early ramification of the temporal branch of the MCA.

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“…In most of these cases, the DMCAs were type B. However, one aneurysm associated with a DMCA arose from the trunk of the DMCA 16) . Another aneurysm was associated with a type A DMCA 12) .…”

Section: Clinical Significancementioning

confidence: 98%

Section: Clinical Significancementioning

confidence: 99%

Middle Cerebral Artery Duplication : Classification and Clinical Implications

Chang

Kim

2011

J Korean Neurosurg Soc

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“…The duplicated MCA has been reported as occurring at a frequency ranging from 0.2 to 2.9% in autopsy cases and in studies based on magnetic resonance angiography [1,3] . On the basis of some series in adults, this anatomical variant has been associated with an increased incidence of risk of vascular lesions such as cerebral aneurysm [4,5] .To our knowledge, this is the first report of a prenatal sonographic diagnosis of MCA duplication and we believe that sonographers should be aware that some vascular variations can be noticed during MCA assessment. …”

mentioning

confidence: 93%

Prenatal Sonographic Diagnosis of Duplicated Middle Cerebral Artery

Ventura

Nazario

Ingar³

et al. 2010

Fetal Diagn Ther

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“…1) Vascular anomalies are considered to be predisposing factors for cerebral aneurysms, but whether DMCA tends to result in aneurysms more often than other anomalies remains unclear. Considering the prevalence of this artery, 1) the number of reported aneurysms arising from DMCA is small, with only 20 reported cases, [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] suggesting no tendency to cause aneurysms. We describe a case of unruptured DMCA aneurysm, which was successfully treated by surgical clipping, and discuss the characteristics and technical difficulty.…”

Section: Introductionmentioning

confidence: 99%

Treatment of Unruptured Aneurysm of Duplication of the Middle Cerebral Artery -Case Report-

Kimura¹,

Morita²

2010

Neurol. Med. Chir.(Tokyo)

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A 60-year-old woman presented with a rare unruptured aneurysm of duplication of the middle cerebral artery (DMCA) identified at examination for headache. Preoperative cerebral angiography revealed the DMCA and a small aneurysm at its origin. Surgical clipping was performed successfully via the transsylvian approach. DMCA aneurysms have a tendency to bleed even if small, but the anatomical configuration causes some technical difficulties.

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Ruptured aneurysm at a duplicated middle cerebral artery with accessory middle cerebral artery

Cited by 42 publications

References 2 publications

Middle Cerebral Artery Duplication : Classification and Clinical Implications

Middle Cerebral Artery Duplication : Classification and Clinical Implications

Prenatal Sonographic Diagnosis of Duplicated Middle Cerebral Artery

Treatment of Unruptured Aneurysm of Duplication of the Middle Cerebral Artery -Case Report-

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