Morphology of the cerebral arterial circle in the prenatal and postnatal period of Serbian population

Vasović, Ljiljana; Trandafilović, Milena; Jovanović, Ivan; Ugrenović, Slađana; Vlajković, Slobodan; Milić, Miroslav; Đorđević, Gordana

doi:10.1007/s00381-013-2151-3

Cited by 15 publications

(16 citation statements)

References 26 publications

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“…Variations of the CW were detected in 17/20 samples. Previous studies have reported variations distributed around the Acom, ACA, and Pcom, which are similar locations to those reported in adults (Alpers et al, 1959;Fisher, 1965;Fujimoto & Tanaka, 1989;Eftekhar et al, 2006), and during the fetal, preterm, neonate, and infant periods (Seydel, 1964;Jeanmart, 1974;Milenkovic et al, 1985;Ardakani et al, 2008;Van Kooij et al, 2010;Vasović et al, 2013). Collectively, variations of the CW seem to be common at any time from the initial formation at the end of the embryonic period to adulthood.…”

Section: Discussionsupporting

confidence: 79%

“…An Acom defect or hypoplasia is observed in 5%-32% of examined adult cases, while a Pcom defect or hypoplasia is observed in 23%-81% and a segment P1 defect or hypoplasia is observed in 7%-15% (Alpers et al, 1959;Fisher, 1965;Fujimoto & Tanaka, 1989;Eftekhar et al, 2006). Variations of the CW are common during the fetal, preterm, neonatal, and even infant periods (Seydel, 1965;Jeanmart, 1974;Milenkovic et al, 1985;Ardakani et al, 2008;Van Kooij et al, 2010;Vasović et al, 2013).…”

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confidence: 99%

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Variations of the Circle of Willis at the End of the Human Embryonic Period

Furuichi

Ishikawa

Uwabe

et al. 2018

The Anatomical Record

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Variations of the circle of Willis (CW) influence blood supply to the brain and adjacent structures in adults. We examined the formation of the CW in 20 human embryo samples at the end of the embryonic period using 3-D reconstructions of serial histological sections. The CW was closed in all samples, and did not form in a single plane, but was composed of multiple stair-like planes. The artery acutely curved at the caudal part of the CW, namely, at the inlet of the basilar artery and bifurcation of the P1 segment of the posterior cerebral artery (PCA), reflecting flexure of the mesencephalon and diencephalon at this stage. Variations were observed in 17 of 20 samples-only anterior parts (anterior communicating artery [Acom] and anterior cerebral artery [ACA]) in 10 samples, only posterior parts (posterior communicating artery [Pcom]) in one sample, and both anterior and posterior parts in six samples. Variations included the Acom formed as partially duplicated in three samples, duplicated in four, plexiform in three, and no channel as a result of a single azygos ACA in one. The ACA formed as duplicated in two, median ACA in two, and right hypoplasia in one. The Pcom formed in hypoplasia of either side in six samples. Variations observed in this study are similar to those observed in fetuses, neonates, and adults. The P1 segment of PCA was very large in all samples. The present observations indicate that variations in the CW are present from the initiation of CW formation. Anat Rec, 2018. © 2018 Wiley Periodicals, Inc.

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Section: Discussionsupporting

confidence: 79%

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confidence: 99%

Variations of the Circle of Willis at the End of the Human Embryonic Period

Furuichi

Ishikawa

Uwabe

et al. 2018

The Anatomical Record

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“…; Vasović et al. ). Traditionally the role of the circulus arteriosus cerebri at the base of the brain has been considered to serve for collateral circulation when some feeding arteries are interrupted.…”

Section: Introductionmentioning

confidence: 98%

“…These exceptional circumstances are reflected in the structure of the origins of the arterial supply to the brain, an anastomotic cerebral basal arterial network from which all major arteries branch. The anterior portion of the cerebral arterial network, the circulus arteriosus cerebri (CAC), first described by a Paduan anatomist Julius Casserius and subsequently by Thomas Willis , includes the cerebral parts of right and left internal carotid arteries (ICA), pre-communicating parts of right and left anterior cerebral arteries (ACA), anterior communicating artery (AComA), right and left posterior communicating arteries (PComA), and the pre-communicating parts of the bilateral posterior cerebral arteries (PCA) (Rogers, 1947;Feindel, 1962;De Silva et al 2009;Bender et al 2013;Vasovi c et al 2013). Traditionally the role of the circulus arteriosus cerebri at the base of the brain has been considered to serve for collateral circulation when some feeding arteries are interrupted.…”

Section: Introductionmentioning

confidence: 99%

The cerebral basal arterial network: morphometry of inflow and outflow components

et al. 2017

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The aim of this project was to study how the morphology of the incoming and outgoing arterial components of the cerebral basal arterial network influence the blood flow to the brain. The cerebral basal arterial network consists of the circulus arteriosus cerebri anteriorly and the basilar artery posteriorly. Diameters of inflow vessels (bilateral vertebral and internal carotid arteries), connecting vessels (anterior communicating, basilar and bilateral posterior communicating arteries) and outflow vessels (anterior, middle and posterior cerebral arteries) were measured and cross-sectional areas calculated in 51 cadaveric brain specimens. The individual and the average cross-sectional areas of inflow arteries (51.43 mm ) were significantly bigger than the major outflow arteries (37.76 mm ) but smaller than the combined cross-sectional areas of outflow (37.76 mm ) and connecting (25.33 mm ) arteries. The difference in the size of arterial cross-sectional area and the presence of the connecting arteries in the cerebral basal arterial network provides a mechanism for lowering peaks in pressure, and demonstrates a function of the cerebral basal arterial network.

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“…A persistent PTA (PPTA), as cited (18), has been noted in 0.03% to 2.2% of cases. It was discovered in human fetuses (4), neonates and infants (9), in the fourth decade (3,22), or in the elderly-eighth (13,23) and ninth decade of life (19). The PPTA persisted singly and unilaterally (3,4,6,7,9,11,13,15,22,23), or Simultaneous presence of the persistent primitive trigeminal artery and so-called intermediate communicating artery was discovered in a 77-year-old cadaver autopsied due to the myocardial infarction.…”

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confidence: 99%

Association of two primitive carotid-basilar anastomoses and cerebrovascular abnormalities on the brain base: a case report

Trandafilović

Vasović²,

Vlajković³

et al. 2017

Turkish Neurosurgery

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Simultaneous presence of the persistent primitive trigeminal artery and so-called intermediate communicating artery in a 77-years-old cadaver autopsied due to the myocardial infarction was discovered. Many vascular variants and abnormalities such as an aplasia of the right vertebral artery (VA), a presence of two right posterior cerebral arteries (PCAs), partial duplication of the right superior cerebellar artery, hypoplasia of the pre-communicating part (A1) of the right anterior cerebral artery and the right PCA of basilar origin, a special configuration of the anterior communicating artery (ACoA), and a small aneurysm at the right A1-ACoA junction were associated. The finding of an incipient cerebral aneurysm at the junction of the hypoplastic A1 and embryonal configuration of the ACoA in eight decade of life indicates that its development was caused by long-term pressure of blood flow at branching points of this artery independent from its caliber. However, it is not yet clear whether the persistence of the first and/or the second carotid-basilar anastomoses in this case was the condition for an aplasia of one VA or vice versa.

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Morphology of the cerebral arterial circle in the prenatal and postnatal period of Serbian population

Abstract: Results of this study will be the basis for future investigation of CACs according to the same or different ages and causes of disease and/or death.

Cited by 15 publications

References 26 publications

Variations of the Circle of Willis at the End of the Human Embryonic Period

Variations of the Circle of Willis at the End of the Human Embryonic Period

The cerebral basal arterial network: morphometry of inflow and outflow components

Association of two primitive carotid-basilar anastomoses and cerebrovascular abnormalities on the brain base: a case report

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