Evidence map›Paper›PMID 35316437›Full record

ArticleJournal of neuro-oncology2022

A volume matched comparison of survival after radiosurgery in non-small cell lung cancer patients with one versus more than twenty brain metastases.

Zhishuo Wei, Ajay Niranjan, Hussam Abou-Al-Shaar, Hansen Deng, Luigi Albano, L Dade Lunsford

Abstract read
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In one paragraph

Article in Journal of neuro-oncology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
3.2field-weighted citation impact, top 7% 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

14 citing papers in PubMed, 21 citations in OpenAlex.

  1. Article
  2. Whole brain radiotherapy and simultaneous integrated boost: is it still a viable treatment for multiple brain metastases in the era of SRS?Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology · 2026
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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

6 authors at 1 institution in 1 country.

Zhishuo WeiDepartment of Neurological Surgery, University of Pittsburgh Medical Center, 200 Lothrop St, Pittsburgh, PA, 15213, USA.
Ajay NiranjanDepartment of Neurological Surgery, University of Pittsburgh Medical Center, 200 Lothrop St, Pittsburgh, PA, 15213, USA. niraax@upmc.edu.ORCID http://orcid.org/0000-0001-6754-8597
Hussam Abou-Al-ShaarDepartment of Neurological Surgery, University of Pittsburgh Medical Center, 200 Lothrop St, Pittsburgh, PA, 15213, USA.
Hansen DengDepartment of Neurological Surgery, University of Pittsburgh Medical Center, 200 Lothrop St, Pittsburgh, PA, 15213, USA.
Luigi AlbanoDepartment of Neurological Surgery, University of Pittsburgh Medical Center, 200 Lothrop St, Pittsburgh, PA, 15213, USA.
L Dade LunsfordDepartment of Neurological Surgery, University of Pittsburgh Medical Center, 200 Lothrop St, Pittsburgh, PA, 15213, USA.
University of Pittsburgh Medical Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTreatment of patients with a large number of brain metastases using radiosurgery remains controversial. In this study we sought to conduct a volume matched comparison to evaluate the clinical outcome of patients with > 20 brain metastases and compared it with patents with solitary brain tumor form non-small cell lung cancer (NSCLC).

methodsBetween 2014 and 2020, 26 NSCLC patients (925 tumors) underwent stereotactic radiosurgery (SRS) for > 20 metastases in a single procedure (median margin dose = 16 Gy, median cumulative tumor volume = 4.52 cc); 56 patients underwent SRS for a single metastasis (median margin dose = 18 Gy, median volume = 4.74 cc). The overall survival (OS), local tumor control (LC), adverse radiation effect (ARE) risk, and incidence of new tumor development were compared.

resultsNo difference in OS was found between patients with > 20 brain metastases (median OS = 15 months) and patients with solitary metastasis (median OS = 12 months; p = 0.3). In the solitary tumor cohort, two of 56 (3.5%) tumors progressed whereas in the > 20 cohort only 3 of 925 (0.3%) tumors showed progression (*p = 0.0013). The rate of new tumor development was significantly higher in patients with > 20 tumors (***p = 0.0001). No significant difference of ARE rate was found (7.5% for > 20 tumors vs. 8.7% for single metastasis).

conclusionsPatients with > 20 tumors showed significantly better LC with similar OS compared to patients with solitary tumors. Current guidelines that restrict the role of SRS to patients with 1-4 tumors should be revised.

Indexed as

Brain NeoplasmsCarcinoma, Non-Small-Cell LungLung NeoplasmsRadiosurgeryFollow-Up StudiesHumansRetrospective StudiesSurvival AnalysisTreatment OutcomeAdverse radiation effectBrain metastasisNon-small cell lung cancerStereotactic radiosurgery

Identifiers

PMID35316437
OpenAlexW4220748223

What OpenQuestion holds

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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.