Evidence map›Paper›PMID 33175615›Full record

ArticleInterventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences2021

Stent-assisted coil embolization for an unruptured vertebral artery-posterior inferior cerebellar artery aneurysm with retrograde access via type 1 persistent primitive proatlantal artery: A case report.

Yasuhiko Nariai, Tomoji Takigawa, Ryotaro Suzuki, Akio Hyodo, Kensuke Suzuki

Open access · greenAbstract readCase Reports
In one paragraph

Article in Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.4field-weighted citation impact, top 31% of its field
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

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.

3 · Its place in the literature

Who cites it

7 citing papers in PubMed, 6 citations in OpenAlex.

  1. The persistent proatlantal artery: types and subtypes.Surgical and radiologic anatomy : SRA · 2026
    Review
  2. Article
  3. Illustrated step-by-step guide to stent-assisted coiling of wide-neck posterior inferior cerebellar aneurysm via a contralateral vertebral artery approach.Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences · 2025
    Article
  4. Article
  5. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Yasuhiko NariaiDepartment of Neurosurgery, Dokkyo Medical University Saitama Medical Center, Saitama, Japan.ORCID https://orcid.org/0000-0001-6391-1002
Tomoji TakigawaDepartment of Neurosurgery, Dokkyo Medical University Saitama Medical Center, Saitama, Japan.
Ryotaro SuzukiDepartment of Neurosurgery, Dokkyo Medical University Saitama Medical Center, Saitama, Japan.
Akio HyodoDepartment of Neurosurgery, Dokkyo Medical University Saitama Medical Center, Saitama, Japan.
Kensuke SuzukiDepartment of Neurosurgery, Dokkyo Medical University Saitama Medical Center, Saitama, Japan.
Social Insurance Saitama Chuo Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Vertebral artery (VA)-posterior inferior cerebellar artery (PICA) aneurysms are rare lesions that are difficult to treat with both endovascular and surgical techniques. Tight angulation of the PICA from VA may make access to the PICA difficult from ipsilateral VA if adjunctive techniques are needed. Recently, the safety and efficacy of retrograde access have been reported. We report a case of endovascular treatment for a VA-PICA aneurysm with a stent-assisted technique using retrograde access via contralateral persistent primitive proatlantal artery (PPA).The patient was a 76-year-old woman with an unruptured VA-PICA aneurysm on the dominant VA side. Coil embolization with a stent-assisted technique using retrograde access seemed appropriate. However, the origin of the left VA was not confirmed. Left common carotid artery angiography demonstrated that the PPA (type 1) branching from external carotid artery joined the VA V4 segment.Retrograde access via the PPA for stenting was performed. A microcatheter for stenting was retrogradely advanced to the right PICA at ease. After deploying the stent, coil insertion was completed from the right VA, and the final angiogram showed adequate occlusion of the aneurysm with preservation of the PICA.Thus, PPA may be an approach route in the treatment of VA-PICA aneurysms with unconfirmed contralateral VA orifice and apparent PPA on angiography, when retrograde access is needed.

Indexed as

Embolization, TherapeuticIntracranial AneurysmAgedBlood Vessel ProsthesisCerebellumFemaleHumansStentsVertebral Arterypersistent primitive proatlantal arteryRetrograde accessstent-assisted coil embolizationvertebral artery-posterior inferior cerebellar artery aneurysm

Identifiers

PMID33175615
PMCPMC8190938
OpenAlexW3100822033

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.