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Evaluation of adaptive radiotherapy (ART) by use of replanning the tumor bed boost with repeated computed tomography (CT) simulation after whole breast irradiation (WBI) for breast cancer patients having clinically evident seroma

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Abstract

Purpose

The aim of this study is to evaluate adaptive radiotherapy (ART) by use of replanning the tumor bed boost with repeated computed tomography (CT) simulation after whole breast irradiation (WBI) for breast cancer patients having clinically evident seroma.

Materials and methods

Forty-eight patients with clinically evident seroma at the time of planning CT simulation for WBI were included. Two RT treatment plannings were generated for each patient based on the initial CT simulation and tumor bed boost CT simulation to assess seroma and boost target volume (BTV) changes during WBI. Also, dosimetric impact of ART was analyzed by comparative evaluation of critical organ doses in both RT treatment plannings.

Results

Median time interval between the two CT simulations was 35 days. Statistically significant reduction was detected in seroma volume and BTV during the conventionally fractionated WBI course along with statistically significant reduction in critical organ doses with ART (p < 0.0001).

Conclusion

Our data suggest significant benefit of ART by use of replanning the tumor bed boost with repeated CT simulation after WBI for patients with clinically evident seroma.

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Abbreviations

WBI:

Whole breast irradiation

BCS:

Breast conserving surgery

RT:

Radiotherapy

CT:

Computed tomography

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Authors and Affiliations

  1. Department of Radiation Oncology, Gulhane Medical Faculty, University of Health Sciences, Gn.TevfikSaglam Cad., Etlik, 06018, Kecioren, Ankara, Turkey

    Omer Sager, Ferrat Dincoglan, Bora Uysal, Selcuk Demiral, Hakan Gamsiz, Yelda Elcim, Esin Gundem, Bahar Dirican & Murat Beyzadeoglu

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  1. Omer Sager
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  2. Ferrat Dincoglan
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  3. Bora Uysal
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  4. Selcuk Demiral
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  5. Hakan Gamsiz
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  6. Yelda Elcim
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  7. Esin Gundem
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  8. Bahar Dirican
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  9. Murat Beyzadeoglu
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Corresponding author

Correspondence to Omer Sager.

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The authors declare that they have no conflict of interest.

Informed consent

Informed consent was obtained from all individual participants included in the study. The study was performed in compliance with the Declaration of Helsinki principles.

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Sager, O., Dincoglan, F., Uysal, B. et al. Evaluation of adaptive radiotherapy (ART) by use of replanning the tumor bed boost with repeated computed tomography (CT) simulation after whole breast irradiation (WBI) for breast cancer patients having clinically evident seroma. Jpn J Radiol 36, 401–406 (2018). https://doi.org/10.1007/s11604-018-0735-2

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  • DOI: https://doi.org/10.1007/s11604-018-0735-2

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