Evidence map›Paper›PMID 19536875›Full record

ArticleCancer2009

Low-grade gliomas in older patients: long-term follow-up from Mayo Clinic.

David A Schomas, Nadia N Laack, Paul D Brown

Open access · bronzeAbstract read
In one paragraph

Article in Cancer, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 13% 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

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 51 citations in OpenAlex.

  1. Guideline
  2. Age-related risk factors and treatment outcomes in geriatric patients with spinal low-grade glioma: A nationwide analysis.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2026
    Article
  3. Article
  4. Epidemiological profile of adult primary brain tumors.Surgical neurology international · 2025
    Article
  5. Review
  6. Article
  7. Review
  8. Article
  9. Article
  10. DynamicNeuro-oncology practice · 2020
    Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Prognosis of older patients with low-grade glioma: A retrospective study.Integrative cancer science and therapeutics · 2017
    Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. 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

3 authors at 1 institution in 1 country.

David A SchomasDepartment of Radiation Oncology, Mayo Clinic, Rochester, Minnesota, USA.
Nadia N Laack
Paul D Brown
Mayo Clinic · US

Funding

MAYO CLINIC CENTER FOR TRANSLATIONAL SCIENCE ACTIVITIESUL1RR024150 · NCRR · MAYO CLINIC ROCHESTER · PI RIZZA, ROBERT A. · 2006 to 2011
$66.4M
NCRR NIH HHS 1 UL1 RR024150-01NCRR NIH HHS UL1 RR024150
6 · The paper itself

Abstract

backgroundLow-grade gliomas (LGGs) are uncommon in older patients, and long-term clinical behavior and prognostic factors are not well defined in this group.

methodsThe authors retrospectively searched their tumor registry for the records of adult patients (> or =18 years) diagnosed as having nonpilocytic LGG between 1960 and 1992 at Mayo Clinic. The Kaplan-Meier method was used to estimate progression-free survival and overall survival (OS) in patients aged 55 years and older.

resultsOf 314 patients initially identified, 32 were aged at least 55 years, with a median age at diagnosis of 61 years (range, 55-74 years). Median follow-up was 17.3 years for survivors. Operative pathologic diagnoses comprised astrocytoma (n = 22, 69%), mixed oligoastrocytoma (n = 7, 22%), and oligodendroglioma (n = 3, 9%). Gross total resection was achieved in 1 patient, radical subtotal resection in 1, and subtotal resection in 14; 16 patients had biopsy only. Postoperative radiotherapy or chemotherapy was given to 23 (72%) patients and 1 (3%) patient, respectively. Median OS was 2.7 years for all patients: 3 years with resection and 2.2 years with biopsy only (P = .58). The 5- and 10-year OS rates were 31% and 18%, respectively. Factors adversely affecting OS on univariate analysis were enhancement on computed tomography (P < .001) and supratentorial location (P = .03).

conclusionsThis retrospective series of older patients suggests that intracranial LGG in this age group behaves aggressively. Pathologic sampling error failing to recognize higher-grade tumors does not seem to account for these poor outcomes. Aggressive management with maximally safe resection followed by adjuvant therapy should be strongly considered.

Indexed as

AgedBrain NeoplasmsChemotherapy, AdjuvantDisease-Free SurvivalFemaleFollow-Up StudiesGliomaHumansMaleMiddle AgedPrognosisRadiotherapy, AdjuvantRecurrenceRetrospective StudiesSurvival AnalysisTreatment Outcome

Identifiers

PMID19536875
PMCPMC2789453
OpenAlexW2003592212

What OpenQuestion holds

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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.