Evidence map›Paper›PMID 40903683›Full record

ArticleSurgical and radiologic anatomy : SRA2025

Persistent primitive lateral basilovertebral anastomosis-rethinking vertebrobasilar junction fenestration.

George Triantafyllou, Panagiotis Papadopoulos-Manolarakis, Nikolaos-Achilleas Arkoudis, George Velonakis, Alexandros Samolis, Maria Piagkou

Erratum issuedAbstract readCase Reports
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In one paragraph

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. An erratum has been issued. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

  1. Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

George TriantafyllouDepartment of Anatomy, School of Medicine, Faculty of Health Sciences, National and Kapodistrian University of Athens, 75 Mikras Asias Str., Goudi, 11527, Athens, Greece.
Panagiotis Papadopoulos-ManolarakisDepartment of Anatomy, School of Medicine, Faculty of Health Sciences, National and Kapodistrian University of Athens, 75 Mikras Asias Str., Goudi, 11527, Athens, Greece.
Nikolaos-Achilleas ArkoudisResearch Unit of Radiology and Medical Imaging, National and Kapodistrian University of Athens, Athens, Greece.
George VelonakisResearch Unit of Radiology and Medical Imaging, National and Kapodistrian University of Athens, Athens, Greece.
Alexandros SamolisDepartment of Anatomy, School of Medicine, Faculty of Health Sciences, National and Kapodistrian University of Athens, 75 Mikras Asias Str., Goudi, 11527, Athens, Greece.
Maria PiagkouDepartment of Anatomy, School of Medicine, Faculty of Health Sciences, National and Kapodistrian University of Athens, 75 Mikras Asias Str., Goudi, 11527, Athens, Greece. mapian@med.uoa.gr.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo describe and analyze two rare cases of arterial rings at the vertebrobasilar junction (VBJ), likely representing persistent segments of the primitive lateral basilovertebral anastomosis (PLBVA), and to explore their embryological origin and clinical significance. MATERIALS AND

methodsTwo morphological arterial variants were identified during a retrospective review of computed tomography angiography (CTA) scans from 505 patients. Multiplanar reconstruction and three-dimensional volume rendering were used for anatomical characterization.

resultsTwo cases (0.4%) showed arterial rings at the VBJ, formed by a variant vessel arising from a vertebral artery and reconnecting with the basilar artery shortly after its origin. The vascular arrangements aligned with persistent segments of the PLBVA rather than true fenestrations. No significant asymmetry, hypoplasia, or dominance was seen in the vertebral or basilar arteries.

conclusionVBJ arterial rings may be embryological remnants of the PLBVA, a rare and often overlooked vascular variation. While usually asymptomatic, their presence can complicate radiologic interpretation and endovascular procedures. Proper identification through detailed CTA assessment is critical to avoid diagnostic errors and ensure procedural safety.

Indexed as

Anatomic VariationBasilar ArteryVertebral ArteryComputed Tomography AngiographyHumansImaging, Three-DimensionalRetrospective StudiesArterial ringComputed tomography angiographyFenestrationNeuroradiological anatomyPrimitive lateral basilovertebral anastomosisVertebrobasilar junction

Identifiers

PMID40903683
PMCPMC12672752

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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.