Evidence map›Paper›PMID 23771168›Full record

ArticleNeuro-oncology2013

Quantitative characterization of the imaging limits of diffuse low-grade oligodendrogliomas.

Chloé Gerin, Johan Pallud, Christophe Deroulers, Pascale Varlet, Catherine Oppenheim, Francois-Xavier Roux, Fabrice Chrétien, Stephen R Thomas, Basile Grammaticos, Mathilde Badoual

Abstract read
In one paragraph

Article in Neuro-oncology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 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

20 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  5. Multiparametric simultaneous hybridQuantitative imaging in medicine and surgery · 2024
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  17. Conventional and advanced (DTI/SWI) neuroimaging findings in pediatric oligodendroglioma.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2015
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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

10 authors.

Chloé GerinCorresponding Author: Mathilde Badoual, Laboratoire IMNC, Campus Universitaire d'Orsay, bat 440, 91405, Orsay, France. badoual@imnc.in2p3.fr.
Johan Pallud
Christophe Deroulers
Pascale Varlet
Catherine Oppenheim
Francois-Xavier Roux
Fabrice Chrétien
Stephen R Thomas
Basile Grammaticos
Mathilde Badoual

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSupratentorial diffuse low-grade gliomas in adults extend beyond maximal visible MRI-defined abnormalities, and a gap exists between the imaging signal changes and the actual tumor margins. Direct quantitative comparisons between imaging and histological analyses are lacking to date. However, they are of the utmost importance if one wishes to develop realistic models for diffuse glioma growth.

methodsIn this study, we quantitatively compared the cell concentration and the edema fraction from human histological biopsy samples (BSs) performed inside and outside imaging abnormalities during serial imaging-based stereotactic biopsy of diffuse low-grade gliomas.

resultsThe cell concentration was significantly higher in BSs located inside (1189 ± 378 cell/mm(2)) than outside (740 ± 124 cell/mm(2)) MRI-defined abnormalities (P = .0003). The edema fraction was significantly higher in BSs located inside (mean, 45% ± 23%) than outside (mean, 5 %± 9%) MRI-defined abnormalities (P < .0001). At borders of the MRI-defined abnormalities, 20% of the tissue surface area was occupied by edema and only 3% by tumor cells. The cycling cell concentration was significantly higher in BSs located inside (10 ± 12 cell/mm(2)), compared with outside (0.5 ± 0.9 cell/mm(2)), MRI-defined abnormalities (P = .0001).

conclusionsWe showed that the margins of T2-weighted signal changes are mainly correlated with the edema fraction. In 62.5% of patients, the cycling tumor cell fraction (defined as the ratio of the cycling tumor cell concentration to the total number of tumor cells) was higher at the limits of the MRI-defined abnormalities than closer to the center of the tumor. In the remaining patients, the cycling tumor cell fraction increased towards the center of the tumor.

Indexed as

Magnetic Resonance ImagingAdultBiopsyBrain EdemaBrain NeoplasmsFemaleHumansImage EnhancementImmunoenzyme TechniquesMaleMiddle AgedNeoplasm GradingOligodendrogliomaPrognosisRetrospective StudiesStatistics as Topicedemagliomashistologymagnetic resonance imagingquantification

Identifiers

PMID23771168
PMCPMC3779035

What OpenQuestion holds

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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.