Evidence map›Paper›PMID 41468442›Full record

ArticlePloS one2025

Prevalence and associating factors for iatrogenic gliosis-like changes in surgically treated intracranial meningioma patients-A retrospective study of 255 meningioma patients.

Joonas Laajava, Mika Niemelä, Miikka Korja

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Article in PloS one, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

3 authors.

Joonas LaajavaDepartment of Neurosurgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.ORCID https://orcid.org/0009-0003-1078-4718
Mika NiemeläDepartment of Neurosurgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.
Miikka KorjaDepartment of Neurosurgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.ORCID https://orcid.org/0000-0002-4463-6954

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposePersistent peritumoral brain edema (PTBE) following surgery of intracranial meningioma (IM) has recently been proposed to represent, in part, iatrogenic gliosis-like changes (IGCs). We aimed to estimate the frequency of IGCs after gross total resection (GTR) of IM, identify factors associated with IGCs, and assess their effect on surgical outcome.

methodsPatients with IM who underwent surgery between 2000 and 2020, presented with no preoperative PTBE on magnetic resonance imaging, and had at least one year of follow-up were retrospectively identified. Only patients without preoperative PTBE were included to ensure that postoperative hyperintense fluid-attenuated inversion recovery (FLAIR) changes were iatrogenic. Outcomes were evaluated based on postoperative symptoms and changes in Karnofsky Performance Status (KPS).

resultsA total of 255 meningioma patients without preoperative PTBE were identified. Of these, 133 (52.2%) showed postoperative IGCs on FLAIR imaging. IM location (p < .001), volume (p < .001) and World Health Organization grade (p = .003) associated with IGCs in univariate analysis. In multivariate analysis, non-convexity location (OR 2.0-12.2, p = .04 to <.001) and IM volume (OR 1.1, p < .001) remained significant. Patients with IGCs showed a modest KPS improvement from 86.7 to 88.0 (+1.3), while those without IGCs improved more from 90.0 to 92.5 (+2.5, p = .002). IGCs were associated with residual symptoms (OR 2.3, p = .01) and new-onset seizures (OR 6.1, p = .04).

conclusionIGCs are frequent following GTR of IM, and associate with IM location and volume. IGCs likely associate with impaired recovery following surgery and new-onset seizures.

Indexed as

Brain EdemaGliosisMeningeal NeoplasmsMeningiomaPostoperative ComplicationsAdultAgedFemaleHumansIatrogenic DiseaseMagnetic Resonance ImagingMaleMiddle AgedNeurosurgical ProceduresPrevalenceRetrospective Studies

Identifiers

PMID41468442
PMCPMC12752940

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