ESTRO 2023 - Abstract Book

S701

Monday 15 May 2023

ESTRO 2023

duration of tube feeding was 36 days (interquartile range (IQR): 23-55) in the dose reduction arm and 34 days (IQR 22-39) in the control arm (p=0.307). Conclusion Radiation dose de-escalation to the elective neck in patients with head and neck cancer, resulted in a significantly lower rate of patients requiring tube feeding and a faster recovery of mucositis and dysphagia.

OC-0830 Accelerated partial breast irradiation: 10-year results of a randomized GEC-ESTRO phase III trial V. Strnad 1 , C. Polgár 2 , O. Ott 3 , G. Hildebrandt 4 , D. Kauer-Dorner 5 , H. Knauerhase 4 , T. Major 6 , J. Lyczek 7 , J.L. Guinot 8 , C. Gutierrez Miguelez 9 , P. Slampa 10 , P. Niehoff 11 , M. Allgäuer 12 , K. Lössl 13 , B. Polat 14 , R. Fietkau 15 , A. Schlamann 16 , A. Resch 5 , A. Kulik 17 , L. Arribas 18 , F. Guidea 9 , C. Gall 19 , W. Uter 19 1 University Hospital Erlangen, Dept. of Radiation Oncology, Erlangen, Germany; 2 National Institute of Oncology Budapest, Dept.of Radiation Oncology, Budapest, Hungary; 3 University Hospital Erlangen, Dept. of Radiation Oncology, Erlangen, Germany; 4 University Hospital Rostock, Dept. of Radiation Oncology, Rostock, Germany; 5 University Hospital AKH, Dept. of Radiation Oncology, Vienna, Austria; 6 National Institute of Oncoogy Budapest, Dept. of Radiation Oncology, Budapest, Hungary; 7 Podkarpacki Hospital Cancer Center , Dept. of Radiation Oncology, Brzozów, Poland; 8 Valencian Institute of Oncology , Dept. of Radiation Oncology, Valencia, Spain; 9 Catalan Institute of Oncology , Dept. of Radiation Oncology, Barcelona, Spain; 10 Masaryk Memorial Cancer Institute , Dept. of Radiation Oncology, Brno, Czech Republic; 11 Sana Hospital Offenbach, Dept. of Radiation Oncology, Offenbach, Germany; 12 Hospital Barmherzige Brüder Regensburg, Dept. of Radiation Oncology, Regensburg, Germany; 13 University Hospital Bern, Inselspital, Dept. of Radiation Oncology, Bern, Switzerland; 14 University Hospital Würzburg, Dept.of Radiation Oncology, Würzburg, Germany; 15 University Hospital Erlangen, Dept.of Radiation Oncology, Erlangen, Germany; 16 University Hosital Leipzig, Dept.of Radiation Oncology, Leipzig, Germany; 17 Instytut im Marii Sk ł odowskej , Dept. of Radiation Oncology, Warsaw, Poland; 18 Valencian Institute of Oncology, Depr. of Radiation Oncology, Valencia, Spain; 19 University Erlangen- Nuremberg, Department of Medical Informatics, Biometry and Epidemiology, Erlangen, Germany