The 7th Conference on Experimental and Translational Oncology (CETO), was held in Portorož, Slovenia. Substantial part of the conference was devoted to the results of WG 3 on Medical applications of electroporation. Selected papers from the participating experts are collected in special issue of Radiology and Oncology, international open access journal publishing in the field of oncology. In this issue we have 10 interesting papers from different fields of oncology, including three clinical papers on electrochemotherapy;