Oculomotor nerve segment between proximal posterior and superior cerebellar arteries: an MRI study.
Neurovascular compression
Oculomotor nerve
Posterior cerebral artery
Superior cerebellar 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:
Nov 2022
Nov 2022
Historique:
received:
11
08
2022
accepted:
08
10
2022
pubmed:
15
10
2022
medline:
23
11
2022
entrez:
14
10
2022
Statut:
ppublish
Résumé
No study has documented the oculomotor nerve (OMN) segment lying between the posterior cerebral (PCA) and superior cerebellar (SCA) arteries adjacent to the brainstem. The present study aimed to characterize it. A total of 71 patients underwent thin-sliced, sagittal T2-weighted magnetic resonance imaging for analysis. The OMN segments lying between the PCA and SCA were identified in all patients. The OMN segment in relation to the PCA and SCA was classified into five types. Of them, the PCA-OMN contact type was the most frequent and found in 35.2% of 71 sides on the right and 39.4% on the left. Also, the PCA-OMN compression type was identified in 12.7% on the right and 15.5% on the left. In these types, the mean distance between the brainstem and contact/compression sites were measured 4.4 ± 2.3 mm on the right and 4.4 ± 1.6 mm on the left. In more than forty percent, the sites were located at the level of the pontomesencephalic junction. The OMN may be frequently in contact with the PCA near the brainstem. The site located more distal than the central-peripheral myelin junction of the OMN can attribute to a low frequency of neurovascular compression syndrome of the nerve.
Identifiants
pubmed: 36241748
doi: 10.1007/s00276-022-03033-3
pii: 10.1007/s00276-022-03033-3
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1475-1480Informations de copyright
© 2022. The Author(s), under exclusive licence to Springer-Verlag France SAS, part of Springer Nature.
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