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Πέμπτη 10 Αυγούστου 2017

Salvage high-dose-rate brachytherapy and external beam radiotherapy for isolated vaginal recurrences of endometrial cancer with no prior adjuvant therapy

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Publication date: Available online 10 August 2017
Source:Brachytherapy
Author(s): Christopher H. Chapman, Kaveh Maghsoudi, Ramey D. Littell, Lee-May Chen, I-Chow Hsu
PurposeTo evaluate clinical outcomes for isolated vaginal recurrence of endometrial cancer without adjuvant therapy treated with salvage external beam radiation therapy (EBRT) and high-dose-rate CT-based inverse-planned brachytherapy.Methods and MaterialsThirty women were included in this retrospective study. Median time to first recurrence was 16.7 months, and median age at recurrence was 73 years. Initial grade was 1 or 2 in 19 patients (63%), and 2009 FIGO stage IA in 19 patients. All patients received pelvic EBRT in 1.8 Gy daily fractions to a total of 45 or 50.4 Gy. Interstitial brachytherapy was used in 27 patients (90%). The median total EQD2 dose was 68.3 Gy. Kaplan-Meier estimates of overall survival (OS), cause-specific survival (CSS), progression free survival (PFS), locoregional failure-free survival, and distant failure–free survival (DFFS) were calculated.ResultsMedian follow-up was 76.4 months for vital status and 57.7 months for disease status after salvage therapy. The 5-year OS, CSS, PFS, locoregional failure-free survival, and DFFS after salvage therapy were 77%, 83%, 75%, 87%, and 86%. Initial high-grade disease was prognostic for OS, CSS, and DFFS (5-year OS 95% vs. 29%, p = 0.005). Initial stage beyond IA was prognostic for CSS, PFS, and DFFS (5-year CSS 93% vs. 74%, p = 0.025).ConclusionsSalvage EBRT and high-dose-rate brachytherapy resulted in a high rate of locoregional control. Initial high-grade and advanced stage disease were associated with greater distant failure and cancer-related mortality after salvage therapy.



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