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The Prognostic Role of Tumor Volume in the Outcome of Patients with Single Brain Metastasis After Stereotactic Radiosurgery.

Abstract：

BACKGROUND:Patients with single brain metastasis (SBM) have better outcomes after stereotactic radiosurgery (SRS). We analyzed our SRS database to evaluate possible prognostic factors in patients with SBM. METHODS:A total of 584 patients with SBM were treated with SRS at our institution (2000-2012). Study end points were overall survival (OS), and distant and local intracranial progression-free survival (DPFS and LPFS, respectively). Multivariable analysis was performed to develop prognostic models. RESULTS:Median OS was 10.8 months. A total of 196 patients (36.7%) had distant progression and 102 patients (19.2%) had local progression. New SBM prognostic indices (SPIs) were devised for OS, DPFS, and LPFS. Graded prognostic assessment, neurologic symptoms (P = 0.01), and tumor volume (P = 0.02) were independently associated with OS. The SPI for OS was defined: unfavorable (OS, 7.3 months), intermediate (OS, 10.6 months), and favorable (OS, 19.8 months). For DPFS, age (P = 0.0029), tumor volume (P = 0.0002), and previous whole-brain radiotherapy (P = 0.027) were prognostic and were used to define SPI for DPFS: favorable (6-month cumulative incidence failure [CIF], 10.9%), intermediate (6-month CIF, 16.7%), and unfavorable (6-month CIF, 26.0%) (P < 0.001). For LPFS, graded prognostic assessment (P = 0.0012) and tumor volume (P = 0.0004) were significant, and defined 2 groups in the LPFS SPI: unfavorable (6-month CIF, 12.3%) and favorable (6-month CIF, 6%) (P < 0.001). CONCLUSIONS:This is the largest series of patients with SBM treated with SRS analyzed for OS, LPFS, and DPFS. SPI was devised for end points. Tumor volume had a significant association with all 3 end points. Neurologic symptoms, age, and previous whole-brain radiotherapy were also found to be prognostic.

journal_name

World Neurosurg

journal_title

World neurosurgery

authors

Bennett EE,Angelov L,Vogelbaum MA,Barnett GH,Chao ST,Murphy ES,Yu JS,Suh JH,Jia X,Stevens GHJ,Ahluwalia MS,Mohammadi AM

doi

10.1016/j.wneu.2017.04.156

subject

Has Abstract

pub_date

2017-08-01 00:00:00

pages

229-238

eissn

1878-8750

issn

1878-8769

pii

S1878-8750(17)30664-2

journal_volume

104

pub_type

杂志文章

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