Evidence map›Paper›PMID 34448046›Full record

ArticleActa neurochirurgica2021

Posterior cranial fossa and cervical spine morphometric abnormalities in symptomatic Chiari type 0 and Chiari type 1 malformation patients with and without syringomyelia.

Enver I Bogdanov, Aisylu T Faizutdinova, John D Heiss

Open access · greenAbstract read
In one paragraph

Article in Acta neurochirurgica, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
2.6field-weighted citation impact, top 11% 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

11 citing papers in PubMed, 17 citations in OpenAlex.

  1. Clinical and MRI morphometric characterization of symptomatic cerebellar tonsillar ectopia.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
    Article
  2. Article
  3. MRI-morphometric characterization of Chiari malformation types 0 and 1 with syringomyelia: implications for diagnosis and pathogenesis.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
    Observational
  4. Article
  5. Review
  6. Article
  7. Article
  8. Review
  9. Chiari zero malformation with syringobulbia.Radiology case reports · 2023
    Article
  10. Article
  11. Review
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

3 authors at 2 institutions in 2 countries.

Enver I BogdanovDepartment of Neurology and Rehabilitation, Kazan State Medical University, Butlerov str. 49, Kazan, Russian Federation.ORCID http://orcid.org/0000-0001-9332-8053
Aisylu T FaizutdinovaDepartment of Neurology and Rehabilitation, Kazan State Medical University, Butlerov str. 49, Kazan, Russian Federation. aisluzab@mail.ru.ORCID http://orcid.org/0000-0002-9359-8309
John D HeissSurgical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, 10 Center Drive, 10-3D20, MSC-1414, Bethesda, MD, 20892-1414, USA.ORCID http://orcid.org/0000-0002-3890-0165
Kazan State Medical University · RUNational Institutes of Health · US

Funding

Pathophysiology and Treatment of SyringomyeliaZIANS003050 · NINDS · NATIONAL INSTITUTE OF NEUROLOGICAL DISORDERS AND STROKE · PI HEISS, JOHN · 2009 to 2025
$14.4M
Intramural NIH HHS ZIA NS003050
6 · The paper itself

Abstract

backgroundTo better understand how anatomical features of Chiari malformation type 0 (CM0) result in the manifestation of Chiari malformation type 1 (CM1) signs and symptoms, we conducted a morphometric study of the posterior cranial fossa (PCF) and cervical canal in patients with CM1 and CM0.

methodsThis retrospective study had a STROBE design and included 120 adult patients with MRI evidence of a small PCF (SPCF), typical clinical symptoms of CM1, and a diagnosis of CM1, CM0, or SPCF-TH0-only (SPCF with cerebellar ectopia less than 2 mm and without syringomyelia). Patients were divided by MRI findings into 4 groups: SPCF-TH0-only, SPCF-TH0-syr (CM0 with SPCF and syringomyelia), SPCF-CM1-only (SPCF with cerebellar ectopia 5 mm or more without syringomyelia), and SPCF-CM1-syr (CM1 with syringomyelia). Neurological examination data and MRI parameters were analyzed.

resultsAll patient cohorts had morphometric evidence of a small, flattened, and overcrowded PCF. The PCF phenotype of the SPCF-TH0-only group differed from that of other CM cohorts in that the length of clivus and supraocciput and the height of the PF were longer, the upper CSF spaces of PCF were taller, and the area of the foramen magnum was smaller. The SPCF-TH0 groups had a more significant narrowing of the superior cervical canal and a smaller decrease in PCF height than the SPCF-CM1 groups.

conclusionsPatients with SPCF-TH0 with and without syringomyelia developed Chiari 1 symptoms and signs. Patients with SPCF-TH0-syr (Chiari 0) had more constriction of their CSF pathways in and around the foramen magnum than patients with SPCF-TH0-only.

Indexed as

Arnold-Chiari MalformationSyringomyeliaCervical VertebraeCranial Fossa, PosteriorHumansMagnetic Resonance ImagingRetrospective StudiesChiari malformation type 0Chiari malformation type 1Morphometric abnormalitiesPosterior cranial fossaSpinal canalSyringomyelia

Identifiers

PMID34448046
PMCPMC9382851
OpenAlexW3195577023

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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.