Cancer care for Ukrainian refugees during the first 6 weeks of 2022 Russian invasion – An experience of a cancer reference centre in Poland

•We defined the profile of Ukrainian cancer refugee patients.•Women with breast cancer accounted for majority of refugee patients.•Literature regarding the refugees' cancer care impact on the health care system is missing.•National and local solutions introduced to improve cancer care for Refugees are shown.•Efforts should be directed at creating procedures and engaging international societies.