Evidence map›Paper›PMID 41023429›Full record

ReviewSkeletal radiology2026

Extra-axial chordoma of the distal femur: a clinical and radiological challenge-case report and literature review.

Lotje A Hoogervorst, Thomas W Borsje, Danique L M van Broekhoven, Bart Kaptein, Ana Navas Cañete, Shaho Hasan, Robert J P van der Wal

Abstract readCase ReportsReview
PubMed Full text at PMC Publisher
In one paragraph

Review in Skeletal radiology, 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

7 authors.

Lotje A HoogervorstDepartment of Orthopaedics, Leiden University Medical Center, Leiden, 2333ZA, the Netherlands. l.a.hoogervorst@lumc.nl.ORCID http://orcid.org/0000-0001-5343-6965
Thomas W BorsjeDepartment of Orthopaedics, Leiden University Medical Center, Leiden, 2333ZA, the Netherlands.
Danique L M van BroekhovenDepartment of Orthopaedics, Leiden University Medical Center, Leiden, 2333ZA, the Netherlands.
Bart KapteinDepartment of Orthopaedics, Leiden University Medical Center, Leiden, 2333ZA, the Netherlands.
Ana Navas CañeteDepartment of Radiology, Leiden University Medical Center, Leiden, 2333ZA, the Netherlands.
Shaho Hasan
Robert J P van der WalDepartment of Orthopaedics, Leiden University Medical Center, Leiden, 2333ZA, the Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We report a very rare case of an intraossesous extra-axial chordoma (EAC) involving the distal femur. We describe the clinical presentation, radiologic and pathological findings, and the treatment. In addition, a systematic literature search was performed to further expand the knowledge regarding EAC in the lower extremities, including 13 papers describing a total of 21 adult patients.

Indexed as

ChordomaFemoral NeoplasmsMagnetic Resonance ImagingDiagnosis, DifferentialFemurHumansTomography, X-Ray ComputedBone tumorChordomaExtra-axialOncologyOrthopedicsSurgery

Identifiers

PMID41023429
PMCPMC12743087

What Socratic holds

Textmetadata
LicenceCC BY
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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 Socratic graph.