SynthesisNeuroradiology2025
Prevalence of suboccipital and intradural vertebral artery variants: a systematic review with meta-analysis.
Synthesis in Neuroradiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
8 citing papers in PubMed.
- Prevalence of basilar artery variants: a systematic review with meta-analysis of radiological studies.Neuroradiology · 2026Article
- The persistent proatlantal artery: types and subtypes.Surgical and radiologic anatomy : SRA · 2026Review
- A Duplicated Anterior Inferior Cerebellar Artery Traversing a Bifurcated Abducens Nerve.Cureus · 2026Article
- Fenestrated giant mastoid emissary vein, a novel finding.Surgical and radiologic anatomy : SRA · 2026Article
- Microvascular decompression for hemifacial spasm associated with large fenestration of the vertebral artery: illustrative case.Journal of neurosurgery. Case lessons · 2026Article
- Supernumerary transitional cervicothoracic vertebra and interrupted left subclavian artery reconstituted by a left vertebral arteria lusoria crossing a foramen transversarium.Surgical and radiologic anatomy : SRA · 2026Article
- Persistent primitive lateral basilovertebral anastomosis-rethinking vertebrobasilar junction fenestration.Surgical and radiologic anatomy : SRA · 2025Article
- Morphological Variations of the Anterior Cerebral Artery: A Systematic Review with Meta-Analysis of 85,316 Patients.Diagnostics (Basel, Switzerland) · 2025Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe current systematic review, along with a meta-analysis, aims to present and calculate the pooled prevalence of the morphological variants of the vertebral artery (VA) within the suboccipital (V3) and intradural (V4) segments.
methodsAccording to the most recent guidelines, the systematic review was conducted using four online databases. Eligible studies were extracted, and a meta-analysis was performed utilizing R programming software. A subgroup analysis was conducted based on nationality and imaging techniques.
resultsThe systematic review revealed thirty-two (32) studies involving 176,391 patients. The pooled prevalence of VA fenestration was established at 0.30% (95% CI: 0.14–0.51). Furthermore, the persistent first intersegmental artery (PFIA) was estimated to have a pooled prevalence of 1.17% (95% CI: 0.36–2.34), wherein the imaging technique and nationality served as a significant moderator. An aberrant origin of the posterior inferior cerebellar artery from the V3 segment was identified, with a pooled prevalence of 2.69% (95% CI: 1.13–4.82). Additionally, the pooled VA dominance, hypoplasia, and atresia prevalences were recorded at 27.45%, 13.41%, and 5.39%, respectively.
conclusionsMagnetic resonance or computed tomography angiographies can accurately illustrate the distal VA’s diverse anatomical configurations. Specific variants hold substantial clinical significance, as they are correlated with posterior circulation cerebrovascular incidents and may complicate posterior approaches to the craniocervical region.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.