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037 _ _ |a DKFZ-2021-01969
041 _ _ |a English
082 _ _ |a 610
100 1 _ |a Weykamp, Fabian
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245 _ _ |a Stereotactic body radiotherapy of lymph node metastases under MR-guidance: First clinical results and patient-reported outcomes.
260 _ _ |a Heidelberg
|c 2022
|b Springer Medizin
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500 _ _ |a #LA:E050# / 2022 Jan;198(1):56-65
520 _ _ |a Stereotactic body radiotherapy (SBRT) is a noninvasive treatment option for lymph node metastases (LNM). Magnetic resonance (MR)-guidance offers superior tissue contrast and enables treatment of targets in close vicinity to radiosensitive organs at risk (OAR). However, literature on MR-guided SBRT of LNM is scarce with no report on outcome parameters.We report a subgroup analysis of a prospective observational study comprising patients with LNM. Patients received MR-guided SBRT at our MRIdian Linac (ViewRay Inc., Mountain View, CA, USA) between January 2019 and February 2020. Local control (LC), progression-free survival (PFS) and overall survival (OS) analysis were performed using the Kaplan-Meier method with log rank test to test for significance (p < 0.05). Our patient-reported outcome questionnaire was utilized to evaluate patients' perspective. The CTCAE (Common Terminology Criteria for Adverse Events) v. 5.0 was used to describe toxicity.Twenty-nine patients (72.4% with prostate cancer; 51.7% with no distant metastases) received MR-guided SBRT for in total 39 LNM. Median dose was 27 Gy in three fractions, prescribed to the 80% isodose. At 1‑year, estimated LC, PFS and OS were 92.6, 67.4 and 100.0%. Compared to baseline, six patients (20.7%) developed new grade I toxicities (mainly fatigue). One grade II toxicity occurred (fatigue), with no adverse event grade ≥III. Overall treatment experience was rated particularly positive, while the technically required low room temperature still represents the greatest obstacle in the pursuit of the ideal patient acceptance.MR-guided SBRT of LNM was demonstrated to be a well-accepted treatment modality with excellent preliminary results. Future studies should evaluate the clinical superiority to conventional SBRT.
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700 1 _ |a Herder-Wagner, Charlotte
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700 1 _ |a Regnery, Sebastian
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700 1 _ |a Hoegen, Philipp
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700 1 _ |a Renkamp, C Katharina
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700 1 _ |a Liermann, Jakob
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700 1 _ |a Rippke, Carolin
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700 1 _ |a Koerber, Stefan A
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700 1 _ |a König, Laila
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700 1 _ |a Buchele, Carolin
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700 1 _ |a Klüter, Sebastian
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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 10.1007/s00066-021-01834-w
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