Fenestrated P1 segment of posterior cerebral artery, partly duplicated posterior communicating artery.
Arterial duplication
Arterial fenestration
Basilar artery
Cerebral artery
Circle of Willis
Internal carotid artery
Journal
Surgical and radiologic anatomy : SRA
ISSN: 1279-8517
Titre abrégé: Surg Radiol Anat
Pays: Germany
ID NLM: 8608029
Informations de publication
Date de publication:
Jun 2023
Jun 2023
Historique:
received:
13
03
2023
accepted:
09
04
2023
medline:
15
5
2023
pubmed:
18
4
2023
entrez:
17
4
2023
Statut:
ppublish
Résumé
Anatomic variations at the junction of primitive internal carotid and basilar arteries are exceedingly rare. We aimed at reporting such rare variants involving the posterior communicating artery (PComA) and the P1 segment of posterior cerebral artery (PCA). The circle of Willis was dissected in an adult cadaver after removal of the cranial vault and cerebral hemispheres. The basilar end was rotated axially to the right. The P1 segment of the right PCA was fenestrated and occupied the interpeduncular fossa. The right PComA passed over the oculomotor nerve to join the anterior arm of the P1 fenestration. On the opposite side, the PComA coursed supero-medially to the oculomotor nerve and it had a partly duplicated posterior end, with two arms, medial, larger, and lateral, thinner, inserting successively into the left PCA. Extremely rare anatomic variations of the circle of Willis should not be ignored when endovascular or microneurosurgical specific approaches are intended.
Identifiants
pubmed: 37069448
doi: 10.1007/s00276-023-03145-4
pii: 10.1007/s00276-023-03145-4
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
761-763Informations de copyright
© 2023. The Author(s), under exclusive licence to Springer-Verlag France SAS, part of Springer Nature.
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