Evidence map›Paper›PMID 42223500›Full record

ArticleSurgical and radiologic anatomy : SRA2026

Anatomic variations uncommon variant of the callosomarginal artery originating from A1 segment of the anterior cerebral artery with an unruptured aneurysm and distal A1 fenestration.

Yuichi Oyamada, Masanori Isoda, Kentaro Mori, Issei Fukui, Akira Tamase, Naotaka Kodama, Ryo Yamada, Mari Kojima, Tatsu Nakano, Motohiro Nomura and 1 more

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Article in Surgical and radiologic anatomy : SRA, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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2 · The registry

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4 · The record

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5 · Who and what money

Authors and funding

11 authors.

Yuichi OyamadaDepartments of Neurosurgery, Yokohama Sakae Kyosai Hospital, 132 Katsura-cho, Sakae-ku, Yokohama, Kanagawa, 247-8581, Japan. oyamaday23@gmail.com.
Masanori IsodaDepartments of Neurosurgery, Yokohama Sakae Kyosai Hospital, 132 Katsura-cho, Sakae-ku, Yokohama, Kanagawa, 247-8581, Japan.
Kentaro MoriDepartments of Neurosurgery, Yokohama Sakae Kyosai Hospital, 132 Katsura-cho, Sakae-ku, Yokohama, Kanagawa, 247-8581, Japan.
Issei FukuiDepartments of Neurosurgery, Yokohama Sakae Kyosai Hospital, 132 Katsura-cho, Sakae-ku, Yokohama, Kanagawa, 247-8581, Japan.
Akira TamaseDepartments of Neurosurgery, Yokohama Sakae Kyosai Hospital, 132 Katsura-cho, Sakae-ku, Yokohama, Kanagawa, 247-8581, Japan.
Naotaka KodamaDepartment of Neurology, Yokohama Sakae Kyosai Hospital, Yokohama, Kanagawa, Japan.
Ryo YamadaDepartment of Neurology, Yokohama Sakae Kyosai Hospital, Yokohama, Kanagawa, Japan.
Mari KojimaDepartment of Neurology, Yokohama Sakae Kyosai Hospital, Yokohama, Kanagawa, Japan.
Tatsu NakanoDepartment of Neurology, Yokohama Sakae Kyosai Hospital, Yokohama, Kanagawa, Japan.
Motohiro NomuraDepartments of Neurosurgery, Yokohama Sakae Kyosai Hospital, 132 Katsura-cho, Sakae-ku, Yokohama, Kanagawa, 247-8581, Japan.
Tetsuya YamamotoDepartment of Neurosurgery, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Some anatomical variations in the A1 segment of the anterior cerebral artery have been reported, but large cortical branches arising from this A1 segment are rare. Herein, we report an unusual case of a callosomarginal artery originating from the A1 segment associated with an unruptured aneurysm and distal A1 fenestration in an 85-year-old woman. These variants and aneurysm were incidentally identified on magnetic resonance angiography performed for the evaluation of cerebral infarction. Magnetic resonance imaging is useful in identifying anomalies in cerebrovascular structures. Conservative management was selected because of the small size of the aneurysm and the patient's advanced age.

Indexed as

Anatomic VariationAnterior Cerebral ArteryIntracranial AneurysmAged, 80 and overCerebral AngiographyConservative TreatmentFemaleHumansIncidental FindingsMagnetic Resonance AngiographyA1AneurysmAnomalous originAnterior cerebral arteryCallosomarginal arteryFenestration

Identifiers

PMID42223500

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.