Evidence map›Paper›PMID 39809896›Full record

ArticleNeurosurgical review2025

Effectiveness and safety of hypofractionated gamma knife radiosurgery for large meningiomas and those adjacent to the optic pathway and brainstem: preliminary therapeutic outcomes.

Yudai Hirano, Yuki Shinya, Motoyuki Umekawa, Hirotaka Hasegawa, Mariko Kawashima, Christoph Wipplinger, Tamara Wipplinger, Atsuto Katano, Nobuhito Saito

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Article in Neurosurgical review, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

  1. Article
  2. Review
  3. 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

9 authors.

Yudai HiranoDepartment of Neurosurgery, The University of Tokyo Hospital, Tokyo, 113-8655, Japan.
Yuki ShinyaDepartment of Neurosurgery, The University of Tokyo Hospital, Tokyo, 113-8655, Japan. yukishinya6155@gmail.com.ORCID http://orcid.org/0000-0003-0097-5804
Motoyuki UmekawaDepartment of Neurosurgery, The University of Tokyo Hospital, Tokyo, 113-8655, Japan.
Hirotaka HasegawaDepartment of Neurosurgery, The University of Tokyo Hospital, Tokyo, 113-8655, Japan.
Mariko KawashimaDepartment of Neurosurgery, The University of Tokyo Hospital, Tokyo, 113-8655, Japan.
Christoph WipplingerDepartment of Neurologic Surgery, Mayo Clinic, Rochester, MN, 55901, USA.
Tamara WipplingerDepartment of Neurologic Surgery, Mayo Clinic, Rochester, MN, 55901, USA.
Atsuto KatanoDepartment of Radiology, The University of Tokyo Hospital, Tokyo, 113-8655, Japan.
Nobuhito SaitoDepartment of Neurosurgery, The University of Tokyo Hospital, Tokyo, 113-8655, Japan.

Funding

Japan Society for the Promotion of Science (JSPS) Grants-in-Aid for Scientific Research (KAKENHI) 20K17919
6 · The paper itself

Abstract

Recent technologic advancements have facilitated the use of hypofractionated Gamma Knife-based radiosurgery (HF-GKRS) to treat large lesions or those in eloquent areas. This study aimed to analyze the preliminary results of HF-GKRS for these meningiomas, and to determine its effectiveness and safety. This single-center retrospective study analyzed data of patients who underwent HF-GKRS for large meningiomas or those in eloquent areas with > 6 months of follow-up. The primary outcome was progression-free survival (PFS). The secondary outcomes were neurological deterioration, post-treatment T2 signal changes following HF-GKRS, and tumor volume changes. Volumetric analysis of the tumors after treatment was also performed to assess changes in tumor size after HF-GKRS. Overall, 24 patients with a median follow-up period of 22 months (range: 6-49 months) were included. Among them, 18 (75%) patients had tumors in close proximity to the optic pathway, and 15 (63%) patients had large lesions (> 10 cm

Indexed as

Brain StemMeningeal NeoplasmsMeningiomaRadiosurgeryAdultAgedFemaleFollow-Up StudiesHumansMaleMiddle AgedProgression-Free SurvivalRadiation Dose HypofractionationRetrospective StudiesTreatment OutcomeVisual PathwaysEloquent areasGamma KnifeHypofractionated radiosurgeryLarge lesionsMeningiomas

Identifiers

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Registered trials

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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.