Evidence map›Paper›PMID 25758748›Full record

ArticleNeuro-oncology2015

Growth dynamics of untreated glioblastomas in vivo.

Anne Line Stensjøen, Ole Solheim, Kjell Arne Kvistad, Asta K Håberg, Øyvind Salvesen, Erik Magnus Berntsen

Abstract read
In one paragraph

Article in Neuro-oncology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 95 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
95citing 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

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

  1. Pooled it
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35 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

Anne Line StensjøenDepartment of Circulation and Medical Imaging, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway (A.L.S, E.M.B.); Department of Neurosurgery, St. Olavs University Hospital, Trondheim, Norway (O.S.); National Competence Centre for Ultrasound and Image Guided Therapy, St. Olavs University Hospital, Trondheim, Norway (O.S.); Department of Neuroscience, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway (O.S, A.K.H.); Department of Radiology, St. Olavs University Hospital, Trondheim, Norway (K.A.K, A.K.H., E.M.B.); Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway (Ø.S.).
Ole SolheimDepartment of Circulation and Medical Imaging, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway (A.L.S, E.M.B.); Department of Neurosurgery, St. Olavs University Hospital, Trondheim, Norway (O.S.); National Competence Centre for Ultrasound and Image Guided Therapy, St. Olavs University Hospital, Trondheim, Norway (O.S.); Department of Neuroscience, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway (O.S, A.K.H.); Department of Radiology, St. Olavs University Hospital, Trondheim, Norway (K.A.K, A.K.H., E.M.B.); Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway (Ø.S.).
Kjell Arne KvistadDepartment of Circulation and Medical Imaging, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway (A.L.S, E.M.B.); Department of Neurosurgery, St. Olavs University Hospital, Trondheim, Norway (O.S.); National Competence Centre for Ultrasound and Image Guided Therapy, St. Olavs University Hospital, Trondheim, Norway (O.S.); Department of Neuroscience, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway (O.S, A.K.H.); Department of Radiology, St. Olavs University Hospital, Trondheim, Norway (K.A.K, A.K.H., E.M.B.); Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway (Ø.S.).
Asta K HåbergDepartment of Circulation and Medical Imaging, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway (A.L.S, E.M.B.); Department of Neurosurgery, St. Olavs University Hospital, Trondheim, Norway (O.S.); National Competence Centre for Ultrasound and Image Guided Therapy, St. Olavs University Hospital, Trondheim, Norway (O.S.); Department of Neuroscience, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway (O.S, A.K.H.); Department of Radiology, St. Olavs University Hospital, Trondheim, Norway (K.A.K, A.K.H., E.M.B.); Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway (Ø.S.).
Øyvind SalvesenDepartment of Circulation and Medical Imaging, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway (A.L.S, E.M.B.); Department of Neurosurgery, St. Olavs University Hospital, Trondheim, Norway (O.S.); National Competence Centre for Ultrasound and Image Guided Therapy, St. Olavs University Hospital, Trondheim, Norway (O.S.); Department of Neuroscience, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway (O.S, A.K.H.); Department of Radiology, St. Olavs University Hospital, Trondheim, Norway (K.A.K, A.K.H., E.M.B.); Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway (Ø.S.).
Erik Magnus BerntsenDepartment of Circulation and Medical Imaging, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway (A.L.S, E.M.B.); Department of Neurosurgery, St. Olavs University Hospital, Trondheim, Norway (O.S.); National Competence Centre for Ultrasound and Image Guided Therapy, St. Olavs University Hospital, Trondheim, Norway (O.S.); Department of Neuroscience, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway (O.S, A.K.H.); Department of Radiology, St. Olavs University Hospital, Trondheim, Norway (K.A.K, A.K.H., E.M.B.); Department of Cancer Research and Molecular Medicine, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway (Ø.S.).

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGlioblastomas are primary malignant brain tumors with a dismal prognosis. Knowledge of growth rates and underlying growth dynamics is useful for understanding basic tumor biology, developing realistic tumor models, and planning treatment logistics.

methodsBy using repeated pretreatment contrast-enhanced T1-weighted MRI scans from 106 patients (aged 26-83 years), we studied the growth dynamics of untreated glioblastomas in vivo. Growth rates were calculated as specific growth rates and equivalent volume doubling times. The fit of different possible growth models was assessed using maximum likelihood estimations.

resultsThere were large variations in growth rates between patients. The median specific growth rate of the tumors was 1.4% per day, and the equivalent volume doubling time was 49.6 days. Exploring 3 different tumor growth models showed similar statistical fit for a Gompertzian growth model and a linear radial growth model and worse fit for an exponential growth model. However, large tumors had significantly lower growth rates than smaller tumors, supporting the assumption that glioblastomas reach a plateau phase and thus exhibit Gompertzian growth.

conclusionBased on the fast growth rate of glioblastoma shown in this study, it is evident that poor treatment logistics will influence tumor size before surgery and can cause significant regrowth before adjuvant treatment. Since there is a known association between tumor volume, extent of surgical resection, and response to adjuvant therapy, it is likely that waiting times play a role in patient outcomes.

Indexed as

AdultAgedAged, 80 and overBrain NeoplasmsContrast MediaFemaleGlioblastomaHumansMagnetic Resonance ImagingMaleMiddle AgedTumor BurdenContrast Mediabrain neoplasms/pathology*cell growth processesglioblastomagrowth dynamicsmagnetic resonance imaging

Identifiers

PMID25758748
PMCPMC4578579

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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.