Evidence map›Paper›PMID 33811630›Full record

SynthesisJournal of neuro-oncology2021

Cervical chordomas: multicenter case series and meta-analysis.

Oluwaseun O Akinduro, Diogo P Garcia, Ricardo A Domingo, Tito Vivas-Buitrago, Bernardo Sousa-Pinto, Mohamad Bydon, Michelle J Clarke, Ziya L Gokaslan, Maziyar A Kalani, Kingsley Abode-Iyamah and 1 more

Abstract readMeta-Analysis
PubMed Publisher
In one paragraph

Synthesis in Journal of neuro-oncology, 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
3.4field-weighted citation impact, top 7% 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, 26 citations in OpenAlex.

  1. Does intralesional excision plus adjuvant charged- particles radiation therapy matter on local disease control and survival in the management of primary spinal tumors not eligible for en bloc resection? retrospective analysis of a cohort of 36 patients from a single institution.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2026
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  3. Treatments and outcomes of primary and metastatic spinal angiosarcoma patients: study of 29 consecutive cases.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2026
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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

11 authors at 5 institutions in 2 countries.

Oluwaseun O AkinduroDepartment of Neurosurgery, Mayo Clinic, Jacksonville, FL, USA.ORCID http://orcid.org/0000-0003-0110-5202
Diogo P GarciaDepartment of Neurosurgery, Mayo Clinic, Jacksonville, FL, USA.
Ricardo A DomingoDepartment of Neurosurgery, Mayo Clinic, Jacksonville, FL, USA.
Tito Vivas-BuitragoDepartment of Neurosurgery, Mayo Clinic, Jacksonville, FL, USA.
Bernardo Sousa-PintoMEDCIDS - Department of Community Medicine, Information and Health Decision Sciences, Faculty of Medicine, University of Porto, Porto, Portugal.
Mohamad BydonDepartment of Neurosurgery, Mayo Clinic, Rochester, MN, USA.
Michelle J ClarkeDepartment of Neurosurgery, Mayo Clinic, Rochester, MN, USA.
Ziya L GokaslanDepartment of Neurosurgery, Warren Alpert Medical School of Brown University, Providence, RI, USA.
Maziyar A KalaniDepartment of Neurosurgery, Mayo Clinic, Jacksonville, FL, USA.
Kingsley Abode-IyamahDepartment of Neurosurgery, Mayo Clinic, Jacksonville, FL, USA.
Alfredo Quiñones-HinojosaDepartment of Neurosurgery, Mayo Clinic, Jacksonville, FL, USA. quinones@mayo.edu.
WinnMed · USMayo Clinic in Arizona · USBrown University · USJacksonville College · USUniversidade do Porto · PT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundEn bloc spondylectomy is the gold standard for surgical resection of sacral chordomas (CHO), but the effect of extent of resection on recurrence and survival in patients with CHO of the cervical spine remains elusive.

methodsMEDLINE, Embase, Scopus, and Cochrane were systematically reviewed. Patients with cervical CHO treated at three tertiary-care academic institutions were reviewed for inclusion. We performed an individual participant data meta-analysis to assess the overall survival (OS) and progression free survival (PFS) after en bloc-gross total resection (GTR) and intralesional-GTR compared to subtotal resection (STR). We then performed an intention-to-treat analysis including all patients with attempted en bloc resection in the en bloc group, regardless of the surgical margins.

resultsThere was a total of 13 series including 161 patients with cervical CHO, including our current series of 22 patients. GTR (en bloc-GTR + intralesional-GTR) was associated with a significant decrease in the risk of local progression (pooled hazard ratio (PHR) = 0.22; 95% CI 0.08-0.59; p = 0.003) and risk of death (PHR 0.31; 95%; CI 0.12-0.83; p = 0.020). A meta-regression analyses determined that intralesional-GTR improved PFS (PHR 0.35; 95% CI 0.16-0.76; p = 0.009) as well as OS (PHR 0.25; 95% CI 0.08-0.79; p = 0.019) when compared to STR. En bloc-GTR was associated with a significant reduction in the risk of local progression (PHR 0.06; 95% CI 0.01-0.77; p = 0.030), but not a decreased OS (PHR 0.50; 95% CI 0.19-1.27; p = 0.145). Our intention-to-treat analyses revealed a near significant improvement in OS for the en bloc group (PHR: 0.15; 95% CI 0.02-1.22; p = 0.054), and nearly identical improvement in PFS. Radiation data was not available for the studies included in the meta-analysis.

conclusionThis is the first and only meta-analysis of patients with cervical CHO. We found that both en bloc-GTR and intralesional-GTR resulted in improved local tumor control when compared to STR.

Indexed as

ChordomaCervical VertebraeHumansMulticenter Studies as TopicRetrospective StudiesSpinal NeoplasmsTreatment OutcomeCervical spineChordomaEn bloc spondylectomyGross total resectionSubtotal resection

Identifiers

PMID33811630
OpenAlexW3152359972

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.