Evidence map›Paper›PMID 42171688›Full record

ArticleNeuroradiology2026

Ruptured intrameatal AICA aneurysm associated with a cerebellar pial arteriovenous shunt: a case report.

Hiroaki Matsumoto, Yasunori Yoshida, Akihiro Okada, Hiroaki Minami, Yasuhisa Yoshida

Abstract readCase Reports
PubMed Publisher
In one paragraph

Article in Neuroradiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

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

1 citing paper in PubMed.

  1. Article
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.

Hiroaki MatsumotoDepartment of Neurosurgery, Cerebrovascular Research Institute, Yoshida Hospital, Kobe, Japan. hiroaki-matsu@umin.ac.jp.
Yasunori YoshidaDepartment of Neurosurgery, Cerebrovascular Research Institute, Yoshida Hospital, Kobe, Japan.
Akihiro OkadaDepartment of Neurosurgery, Cerebrovascular Research Institute, Yoshida Hospital, Kobe, Japan.
Hiroaki MinamiDepartment of Neurosurgery, Cerebrovascular Research Institute, Yoshida Hospital, Kobe, Japan.
Yasuhisa YoshidaDepartment of Neurosurgery, Cerebrovascular Research Institute, Yoshida Hospital, Kobe, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Intrameatal anterior inferior cerebellar artery (AICA) aneurysms associated with distal arteriovenous shunts are extremely rare. We report a ruptured intrameatal AICA aneurysm associated with a cerebellar pial arteriovenous shunt, most consistent with a pial arteriovenous fistula. A 68-year-old woman presented with posterior fossa subarachnoid hemorrhage. Digital subtraction angiography demonstrated a small intrameatal AICA aneurysm and a distal cerebellar arteriovenous shunt supplied by the AICA, brainstem perforators, and superior cerebellar artery. No definite nidus was identified, and contrast-enhanced magnetic resonance imaging suggested a focal shunt point at the brainstem-cerebellar junction; however, a tiny cerebellar or brainstem arteriovenous malformation could not be completely excluded. The aneurysm was considered flow-related. Segmental AICA parent artery occlusion and limited embolization of a brainstem perforating feeder were performed, followed by Gamma Knife radiosurgery for the residual shunt. Follow-up angiography confirmed complete obliteration without recurrent hemorrhage.

Indexed as

Aneurysm, RupturedArteriovenous FistulaCerebellumIntracranial AneurysmIntracranial Arteriovenous MalformationsPia MaterAgedAngiography, Digital SubtractionCerebral AngiographyContrast MediaEmbolization, TherapeuticFemaleHumansMagnetic Resonance ImagingRadiosurgerySubarachnoid HemorrhageContrast MediaAnterior inferior cerebellar arteryEndovascular treatmentFlow-related aneurysmGamma Knife radiosurgeryIntrameatal aneurysmPial arteriovenous shunt

Identifiers

PMID42171688

What OpenQuestion holds

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Registered trials

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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.