It is the pleasure of the European Society for Hyperthermic Oncology to invite you to participate in the 13th International Congress of Hyperthermic Oncology (ICHO), which will be held 27–30 September 2020, in the Doelen, Rotterdam, The Netherlands. The ICHO-2020 congress is organized every four years and is the combined international meeting of the Asian Society of Hyperthermic Oncology, the Society of Thermal Medicine (USA) and the European Society for Hyperthermic