Evidence map›Paper›PMID 31352576›Full record

ReviewChild's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery2019

Management of Chiari I malformations: a paradigm in evolution.

H Alexander, D Tsering, J S Myseros, S N Magge, C Oluigbo, C E Sanchez, Robert F Keating

Abstract readReview
PubMed Publisher
In one paragraph

Review in Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 2 pooled it
–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

19 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Intraoperative ultrasonography in the surgical management of Chiari I malformation: A systematic review and meta-analysis of outcomes and applications.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
    Pooled it
  2. Pooled it
  3. Preoperative radiological scoring system in Chiari malformation type 1: a surgical guide.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2026
    Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Review
  10. Reoperation in Chiari-1 Malformations.Journal of clinical medicine · 2023
    Article
  11. Review
  12. Article
  13. Diagnosis and treatment of Chiari malformation type 1 in children: the International Consensus Document.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2022
    Article
  14. Article
  15. Long-term outcomes of posterior fossa decompression for Chiari malformation type 1: which patients are most prone to failure?Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2021
    Article
  16. Long-term outcomes for children with an incidentally discovered Chiari malformation type 1: what is the clinical significance?Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2021
    Article
  17. The impact of imposed delay in elective pediatric neurosurgery: an informed hierarchy of need in the time of mass casualty crisis.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2020
    Review
  18. Article
  19. 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

7 authors.

H AlexanderDivision of Neurosurgery, Children's National Medical Center, Washington, DC, USA.ORCID 0000-0001-7649-2660
D TseringDivision of Neurosurgery, Children's National Medical Center, Washington, DC, USA.
J S MyserosDivision of Neurosurgery, Children's National Medical Center, Washington, DC, USA.
S N MaggeDivision of Neurosurgery, Children's National Medical Center, Washington, DC, USA.
C OluigboDivision of Neurosurgery, Children's National Medical Center, Washington, DC, USA.
C E SanchezDivision of Neurosurgery, Children's National Medical Center, Washington, DC, USA.
Robert F KeatingDivision of Neurosurgery, Children's National Medical Center, Washington, DC, USA. RKeating@childrensnational.org.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeDespite decades of experience and research, the etiology and management of Chiari I malformations (CM-I) continue to raise more questions than answers. Controversy abounds in every aspect of management, including the indications, timing, and type of surgery, as well as clinical and radiographic outcomes. This review aims to outline past experiences, consolidate current evidence, and recommend directions for the future management of the Chiari I malformation.

methodsA review of recent literature on the management of CM-I in pediatric patients is presented, along with our experience in managing 1073 patients who were diagnosed with CM-I over the past two decades (1998-2018) at Children's National Medical Center (CNMC) in Washington DC.

resultsThe general trend reveals an increase in the diagnosis of CM-I at younger ages with a significant proportion of these being incidental findings (0.5-3.6%) in asymptomatic patients as well as a rise in the number of patients undergoing Chiari posterior fossa decompression surgery (PFD). The type of surgical intervention varies widely. At our institution, 104 (37%) Chiari surgeries were bone-only PFD with/without outer leaf durectomy, whereas 177 (63%) were PFD with duraplasty. We did not find a significant difference in outcomes between the PFD and PFDD groups (p = 0.59). An analysis of failures revealed a significant difference between patients who underwent tonsillar coagulation versus those whose tonsils were not manipulated (p = 0.02).

conclusionWhile the optimal surgical intervention continues to remain elusive, there is a shift away from intradural techniques in favor of a simple, extradural approach (including dural delamination) in pediatric patients due to high rates of clinical and radiographic success, along with a lower complication rate. The efficacy, safety, and necessity of tonsillar manipulation continue to be heavily contested, as evidence increasingly supports the efficacy and safety of less tonsillar manipulation, including our own experience.

Indexed as

Disease ManagementArnold-Chiari MalformationDecompression, SurgicalHumansLaminectomyMagnetic Resonance ImagingSyringomyeliaChiari malformationDecompressionDuraplastyLong-term outcomesPediatricShuntSyringomyeliaTonsillar coagulation

Identifiers

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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.