Evidence map›Paper›PMID 26275367›Full record

ArticleJournal of neuro-oncology2015

Dynamic contrast enhanced T1 MRI perfusion differentiates pseudoprogression from recurrent glioblastoma.

Alissa A Thomas, Julio Arevalo-Perez, Thomas Kaley, John Lyo, Kyung K Peck, Weiji Shi, Zhigang Zhang, Robert J Young

Open access · greenAbstract read
In one paragraph

Article in Journal of neuro-oncology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 69 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
69citing papers in PubMed, 4 pooled it
6.9field-weighted citation impact, top 2% 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

69 citing papers in PubMed, 4 syntheses or guidelines pooled it, 134 citations in OpenAlex.

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  9. CMROLa Radiologia medica · 2025
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9 more citing papers are in PubMed but not listed here.

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

8 authors at 1 institution in 1 country.

Alissa A ThomasDepartment of Neurology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA.
Julio Arevalo-PerezDepartment of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA.
Thomas KaleyDepartment of Neurology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA.
John LyoDepartment of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA.
Kyung K PeckDepartment of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA.
Weiji ShiDepartment of Epidemiology & Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA.
Zhigang ZhangDepartment of Epidemiology & Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA.
Robert J YoungDepartment of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA. youngr@mskcc.org.
Memorial Sloan Kettering Cancer Center · US

Funding

X-RAY CRYSTALLOGRAPHYP30CA008748 · NCI · SLOAN-KETTERING INSTITUTE FOR CANCER RES · PI Nicholas D Socci · 1985 to 2026
$347.4M
NCI NIH HHS P30 CA008748
6 · The paper itself

Abstract

Pseudoprogression may present as transient new or increasing enhancing lesions that mimic recurrent tumors in treated glioblastoma. The purpose of this study was to examine the utility of dynamic contrast enhanced T1 magnetic resonance imaging (DCE MRI) in differentiating between pseudoprogression and tumor progression and devise a cut-off value sensitive for pseudoprogression. We retrospectively examined 37 patients with glioblastoma treated with radiation and temozolomide after surgical resection that then developed new or increasing enhancing lesion(s) indeterminate for pseudoprogression versus progression. Volumetric plasma volume (Vp) and time-dependent leakage constant (Ktrans) maps were measured for the enhancing lesion and the mean and ninetieth percentile histogram values recorded. Lesion outcome was determined by clinical follow up with pseudoprogression defined as stable disease not requiring new treatment. Statistical analysis was performed with Wilcoxon rank-sum tests. Patients with pseudoprogression (n = 13) had Vp (mean) = 2.4 and Vp (90 %tile) = 3.2; and Ktrans (mean) = 3.5 and Ktrans (90 %tile) = 4.2. Patients with tumor progression (n = 24) had Vp (mean) = 5.3 and Vp (90 %tile) = 6.6; and Ktrans (mean) = 7.4 and Ktrans (90 %tile) = 9.1. Compared with tumor progression, pseudoprogression demonstrated lower Vp perfusion values (p = 0.0002) with a Vp (mean) cutoff <3.7 yielding 85% sensitivity and 79% specificity for pseudoprogression. Ktrans (mean) of >3.6 had a 69% sensitivity and 79% specificity for disease progression. DCE MRI shows lower plasma volume and time dependent leakage constant values in pseudoprogression than in tumor progression. A cut-off value with high sensitivity for pseudoprogression can be applied to aid in interpretation of DCE MRI.

Indexed as

Magnetic Resonance ImagingAdultAgedAged, 80 and overAlkaloidsAntineoplastic Agents, AlkylatingBrain NeoplasmsContrast MediaDacarbazineDiffusion Magnetic Resonance ImagingDisease ProgressionFemaleGlioblastomaHumansImage Processing, Computer-AssistedMaleAlkaloidsAntineoplastic Agents, AlkylatingContrast MediaDacarbazineTemozolomideWilcox compoundDCE MRIGlioblastomaPerfusionPseudoprogression

Identifiers

PMID26275367
PMCPMC4726629
OpenAlexW1477615347

What OpenQuestion holds

Textmetadata
LicenceTDM
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.