Our consensus on re-irradiation aims to assist in re-irradiation decision-making and to standardise the classification of different forms of re-irradiation and reporting. The consensus has been endorsed by the European Society for Radiotherapy and Oncology and the European Organisation for Research and Treatment of Cancer. The use of this classification in daily clinical practice and research will facilitate an accurate understanding of the clinical implications of re-irradiation and allow for cross-study comparisons. Data gathered in a uniform manner could be used in the future to make recommendations for re-irradiation on the basis of clinical evidence. The consensus document is based on an adapted Delphi process and a systematic review of the literature was done according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA).
European Society for Radiotherapy and Oncology and European Organisation for Research and Treatment of Cancer consensus on re-irradiation: definition, reporting, and clinical decision making: Nicolaus Andratschke, Jonas Willmann, Ane L. Appelt, Najlaa Alyamani, Panagiotis Balermpas, Brigitta G. Baumer, Coen Hurkmans, Morten Høyer, Johannes A. Langendijk, Orit Kaidar-Person, Yvette van der Linden, Icro Meattini, Maximilian Niyazi, Nick Reynaert, Dirk De Ruysscher, Stephanie Tanadini-Lang, Peter Hoskin, Philip Poortmans, Carsten Nieder; The Lancet Oncology. 2022.