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A Systematic Review and Meta-Analysis of Oncologic Outcomes of Pre- Versus Postoperative Radiation in Localized Resectable Soft-Tissue Sarcoma

  • Bone and Soft Tissue Sarcomas
  • Published:
Annals of Surgical Oncology Aims and scope Submit manuscript

Abstract

Background

The goal of this study was to determine the oncologic outcomes in localized resectable soft-tissue sarcoma after pre- versus postoperative radiation.

Methods

Literature searches through MEDLINE, EMBASE, CancerLit, and the Cochrane Database were performed with the following search terms: sarcoma, radiation, preoperative, and postoperative. Two reviewers independently assessed all eligible publications with the Detsky Quality Scale for Randomized Trials and the Newcastle-Ottawa Quality Assessment Scale for case–control studies. The primary outcome measure was the pooled odds ratio and 95% confidence intervals (95% CI) for the risk of local recurrence calculated through the fixed- and random-effects methods. Time-dependent survival data were calculated as an average across all studies.

Results

Five eligible studies were identified including a total of 1,098 patients. The P value for heterogeneity was 0.259, and the variability (I 2) in results across studies due to true differences in treatment effect was 25%. The risk for local recurrence was lower in the preoperative group with an odds ratio of 0.61 (95% CI 0.42–0.89) by means of the fixed-effects method, and an odds ratio of 0.67 (95% CI 0.39–1.15) by means of the random-effects method. Average survival was 76% (range 62–88%) in the preoperative group and 67% (range 41–83%) in the post-operative group.

Conclusions

The delay in surgical resection necessary to complete preoperative radiation does not seem to increase the risk of lethal metastatic spread. The risk of local recurrence may be lower after preoperative radiation. These findings must be interpreted with caution because of the heterogeneity and bias in the available studies.

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Author information

Authors and Affiliations

  1. McMaster University and Hamilton Health Sciences, Hamilton, ON, Canada

    Emad Al-Absi MD, Forough Farrokhyar PhD, Rajrish Sharma MD & Kaitlyn Whelan

  2. McMaster University and Hamilton Health Sciences, Juravinski Cancer Centre, Hamilton, ON, Canada

    Tom Corbett MD, Malti Patel MD & Michelle Ghert MD, FRCSC

Authors
  1. Emad Al-Absi MD
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  2. Forough Farrokhyar PhD
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  3. Rajrish Sharma MD
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  4. Kaitlyn Whelan
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  5. Tom Corbett MD
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  6. Malti Patel MD
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  7. Michelle Ghert MD, FRCSC
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Corresponding author

Correspondence to Michelle Ghert MD, FRCSC.

Appendix

Appendix

See Tables 3, 4 and 5.

Table 3 Detsky Quality Scale for randomized trials
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Table 4 Newcastle-Ottawa Quality Assessment Scale for case–control studies
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Table 5 Newcastle-Ottawa Quality Assessment Scale for cohort studies
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Al-Absi, E., Farrokhyar, F., Sharma, R. et al. A Systematic Review and Meta-Analysis of Oncologic Outcomes of Pre- Versus Postoperative Radiation in Localized Resectable Soft-Tissue Sarcoma. Ann Surg Oncol 17, 1367–1374 (2010). https://doi.org/10.1245/s10434-009-0885-7

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  • DOI: https://doi.org/10.1245/s10434-009-0885-7

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