An MRI study of typical anatomical variants of the anterior communicating artery complex

Fredon, Fabien; Baudouin, Maxime; Hardy, Jérémy; Kouirira, Assia; Jamilloux, Léa; Taïbi, Abdelkader; Mabit, C.; Valleix, D.; Rouchaud, Aymeric; Durand-Fontanier, Sylvaine

doi:10.1007/s00276-021-02782-x

Cited by 4 publications

(2 citation statements)

References 26 publications

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“…Patients with AComA ruptured aneurysms display damage to deep, medial frontal areas, like septal nuclei [ 9 ]. Many studies have confirmed that A1 ACA variants (especially the hypoplastic ACA) may cause AComA aneurysms due to the hemodynamic stress and the compensatory shunting of blood through AComA [ 13 , 14 , 29 , 30 , 33 , 39 , 48 , 51 , 52 ]. Rhoton [ 48 ] suggested that the greater the diameter difference between bilateral A1 segments, the more likely an AComA aneurysm will develop.…”

Section: Discussionmentioning

confidence: 99%

“…The anterior cerebral artery (ACA) courses anteromedially above the optic chiasm and before its entrance into the interhemispheric fissure [ 59 ], joins the contralateral ACA by the anterior communicating artery (AComA). CAC variants are common (a pooled prevalence- PP of 68.22%) [ 24 ], and usually involve the anterior circulation, which is also the most frequent location of intracranial aneurysms [ 14 ]. Padget [ 41 ], first observed that the CAC variants were significantly more frequent in patients with aneurysms compared to those without.…”

Section: Introductionmentioning

confidence: 99%

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The anterior communicating artery variants: a meta-analysis with a proposed classification system

Triantafyllou,

Tudose,

Tsiouris

et al. 2024

Surg Radiol Anat

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Morphological and morphometric variants of the anterior communicating artery (AComA) have been described by multiple studies; however, a complete classification system of all possible morphological variants with their prevalence is lacking. The current systematic review with meta-analysis combines data from different databases, concerning the AComA morphological and morphometric variants (length and diameter). Emphasis was given to the related clinical implications to highlight the clinical value of their knowledge. The typical AComA morphology occurs with a pooled prevalence (PP) of 67.3%, while the PP of atypical AComA is 32.7%. The identified AComA morphological variants (artery’s hypoplasia, absence, duplication, triplication, differed shape, fenestration, and the persistence of a median artery of the corpus callosum- MACC) were classified in order of frequency. The commonest presented variants were the AComA hypoplasia (8%) and the anterior cerebral artery (ACA) fusion (5.9%), and the rarest ones were the MACC persistence (2.3%), and the AComA triplication (0.7%). The knowledge of those variants is essential, especially for neurosurgeons operating in the area. Given the high prevalence of AComA aneurysms, an adequate and complete classification of those variants is of utmost importance.

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