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037 _ _ |a DKFZ-2019-02258
041 _ _ |a eng
082 _ _ |a 610
100 1 _ |a Forster, Tobias
|b 0
245 _ _ |a Second breast conserving therapy after ipsilateral breast tumor recurrence - a 10-year experience of re-irradiation.
260 _ _ |a Poznań
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520 _ _ |a The aim of this study is to evaluate the efficacy and toxicity of post-operative partial breast re-irradiation with multi-catheter brachytherapy after second breast conserving therapy (BCT) in patients with small, low-risk ipsilateral breast tumor recurrence (IBTR).Between 2008 and 2018, 19 consecutive patients with low-risk IBTR (max. rpT1 cN0 cM0, Her2 negative, preferably positive hormone receptor status) who refused mastectomy were treated with salvage lumpectomy, followed by post-operative partial breast re-irradiation with multi-catheter brachytherapy. Eight patients were irradiated using PDR brachytherapy (49.8-50.4 Gy in pulses of 0.5-0.7 Gy) and 11 patients using HDR brachytherapy (34.2 Gy in fractions of 3.8 Gy or 32 Gy in fractions of 4 Gy). All patients had undergone prior BCT for their primary tumor, followed by adjuvant whole breast radiotherapy. Local control (LC), locoregional control (LRC), overall survival (OS), disease-free survival (DFS) as well as toxicity were evaluated in the present study.After a median follow-up of 65 months following IBTR (18-120 months), only one second IBTR in 19 patients was diagnosed 77 months after re-irradiation, resulting in a LC rate of 100% at 5 years. DFS and OS rates were both 100% at 5 years following re-irradiation. Except for the above mentioned second IBTR, no regional or distant relapse was recorded. Regarding toxicity, 63% of patients developed adverse events (CTCAE grade ≤ 2), with fibrosis detected in 37% (7/19) of patients, necrosis in 11% (2/19), hyperpigmentation in 47% (9/19), and telangiectasia in 11% (2/19), respectively. No patient showed a high-grade (CTCAE grade ≥ 3) adverse event.In case of small, low-risk IBTR, adjuvant re-irradiation using multi-catheter brachytherapy is a feasible, safe, and effective treatment method after repeated lumpectomy, and an alternative to mastectomy.
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700 1 _ |a Akbaba, Sati
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700 1 _ |a Schmitt, Daniela
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700 1 _ |a Krug, David
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700 1 _ |a El Shafie, Rami
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700 1 _ |a Oelmann-Avendano, Jan
|b 5
700 1 _ |a Lindel, Katja
|b 6
700 1 _ |a König, Laila
|b 7
700 1 _ |a Arians, Nathalie
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700 1 _ |a Bernhardt, Denise
|b 9
700 1 _ |a Marmé, Frederik
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700 1 _ |a Schneeweiss, Andreas
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700 1 _ |a Heil, Jörg
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700 1 _ |a Sohn, Christof
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700 1 _ |a Debus, Jürgen
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700 1 _ |a Hörner-Rieber, Juliane
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773 _ _ |a 10.5114/jcb.2019.87001
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