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- W2730486430 abstract "Purpose The role of radiotherapy (RT) was largely deserted after the introduction of platinum-based chemotherapy, but still survival rates are disappointingly low. This study focuses on assessing the clinical efficacy of RT in relation to chemotherapy resistance. Materials and Methods From October 2002 to January 2015, 44 patients were diagnosed with epithelial ovarian cancer (EOC) and treated with palliative RT for persistent or recurrent EOC. All patients received initial treatment with optimal debulking surgery and adjuvant platinum-based chemotherapy. The biologically effective dose (BED) was calculated with α/β set at 10. Ninety-four sites were treated with RT with a median BED of 50.7 Gy (range 28.0 to 79.2 Gy). The primary end-point was the in-field local control (LC) interval, defined as the time interval from the date RT was completed to the date any progressive or newly recurring disease within the RT field was detected on radiographic imaging. Results The median follow-up duration was 52.3 months (range 7.7 to 179.0 months). The 1-year and 2-year in-field LC rates were 66.0% and 55.0%, respectively. Comparisons of percent change of in-field tumor response showed similar distribution of responses among chemoresistant and chemosensitive tumors. On multivariate analysis of predictive factors for in-field LC analyzed by sites treated, BED ⥠50 Gy (hazard ratio, 0.4; confidence interval, 0.2â0.9; p = 0.025) showed better outcomes. Conclusion Regardless of resistance to platinum-based chemotherapy, RT can be a feasible treatment modality for patients with persistent of recurrent EOC. The specific role of RT using updated approaches needs to be reassessed. Keywords: Ovarian neoplasms, Palliative treatment, Radiotherapy" @default.
- W2730486430 created "2017-07-14" @default.
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- W2730486430 date "2017-06-30" @default.
- W2730486430 modified "2023-10-16" @default.
- W2730486430 title "Radiation for persistent or recurrent epithelial ovarian cancer: a need for reassessment" @default.
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- W2730486430 doi "https://doi.org/10.3857/roj.2017.00213" @default.
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