I have worked as a clinical oncology specialist for three years and as a radiation oncology specialist for ten years. I have spent the last five years as Head of the Brachytherapy Department at the Saint John's Oncology Centre in Lublin, while also working as an Assistant Professor at the Radiotherapy Clinic of the Medical University of Lublin. My specialisms include brachytherapy for gynaecological, urological, skin, head and neck, and liver cancers. My main research interests include the combined treatment of various cancers, particularly the role of brachytherapy. My research primarily focuses on brachytherapy for liver metastases from colorectal cancer.