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860 Salvage treatment for vaginal recurrence of endometrial cancer using image-guided adaptive brachytherapy
  1. Vincent Dick,
  2. Johannes Knoth,
  3. Nicole Eder-Nesvacil,
  4. Christian Kirisits,
  5. Joachim Widder,
  6. Maximilian Schmid and
  7. Alina Sturdza
  1. Medical University of Vienna, Wien, Austria


Introduction/Background To evaluate local control (LC), locoregional control (LRC), distant control (DC) and overall survival (OS) for patients with vaginal recurrence of endometrial cancer (EC) receiving salvage radiotherapy with image-guided adaptive brachytherapy (IGABT) +/- external beam radiotherapy (EBRT).

Methodology We retrospectively evaluated all consecutive patients treated with curative intent with IGABT +/- EBRT for vaginal recurrence of EC at our department between 2001 and 2020. Patients with superficial recurrences (tumour ≤ 7 mm) were treated with IGABT alone. Patients with more advanced tumours received pelvic EBRT + IGABT. Actuarial LC, LRC, DC and OS were calculated using the Kaplan-Meier method; long-term G3–5 toxicity was recorded (CTCAE v5 criteria).

Results We identified 46 patients. Radiotherapy for recurrence consisted of IGABT alone for 15 patients and EBRT+IGABT for 31 patients. Three patients received concurrent or sequential platinum-based chemotherapy.

Median follow-up for survival was 61 months for the entire cohort. OS was 76.5% at 5 years. Median follow-up for disease control was 41 months. LC, LRC and DC at 5 years were 92.0%, 83.7% and 81.4%, respectively. Maximum toxicity was G3 and occurred in 9 patients.

Survival and disease control outcome based on treatment type is shown in table 1.

Conclusion IGABT +/- EBRT can effectively salvage vaginal recurrences of EC with acceptable toxicity rates.

Disclosures The authors have no conflicts of interest to disclose.

Abstract 860 Table 1

Outcome based on the treatment type

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