ArticleSurgical and radiologic anatomy : SRA2025
Combination of three rare arterial variations: accessory posterior cerebral artery supplying parieto-occipital branch, duplicate origin of the middle cerebral artery, and accessory anterior cerebral artery (ACA) arising from X-shaped ACA diagnosed by magnetic resonance angiography.
Article in Surgical and radiologic anatomy : SRA, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Accessory posterior cerebral artery-posterior cerebral artery anastomosis located just distal to the P1-P2 junction incidentally diagnosed by magnetic resonance angiography.Surgical and radiologic anatomy : SRA · 2026Article
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Abstract
purposeTo describe a case of three rare cerebral arterial variations: (1) accessory posterior cerebral artery (PCA), (2) duplicate origin of the middle cerebral artery (MCA), and (3) accessory anterior cerebral artery (ACA) diagnosed by magnetic resonance angiography (MRA).
methodsAn 80-year-old man with complete right hemiplegia underwent cranial magnetic resonance imaging (MRI) and MRA using a 3-Tesla scanner. MRA was performed using a standard three-dimensional time-of-flight technique.
resultsMRI revealed acute infarction of the left frontal lobe. MRA showed occlusion of the anterior branch of the left MCA. Subsequently, transarterial thrombectomy was performed. Six days later, follow-up MRA was performed, and a well-recanalized left MCA was confirmed. In addition, accessory right PCA supplying the parieto-occipital branch of the PCA, duplicate origin of the right MCA, and accessory ACA arising from X-shaped ACA, which is an absent variation of the anterior communicating artery (ACoA), were confirmed.
conclusionAn accessory PCA, which typically supplies the temporal branch of the PCA, usually arises from the ACoA. We diagnosed the first case of a combination of three rare cerebral arterial variations. Careful observation using MRA is important for the detection of rare arterial variations. Volume-rendering MRA images are useful for identifying superimposed arteries.
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