October 3rd, 2025, 11:45-14:00, Crowne Plaza Hotel, Athens. Dr Rigakos will participate as a speaker at the conference “Oncology in 2025”, titled: “New developments, prospects and challenges”. Which is organized by the Hellenic Organization for Cancer Prevention and Education (HOPEGK) in collaboration with the 5th Medical Oncology Clinic of “Hygeia” Hospital and the Oncology Unit of the General Hospital of Mytilene “Vostaneio”, where he will give a lecture titled: “Brain tumors – Treatment of recurrence. Oncological perspective”. The event will take place at the Crowne Plaza Hotel, in Athens.