AUTHOR=Filippou Panagiota S. , Karagiannis George S. TITLE=Editorial: Revisiting the Metastatic Cascade—Putting Myeloid Cells Into Context JOURNAL=Frontiers in Oncology VOLUME=10 YEAR=2020 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2020.631278 DOI=10.3389/fonc.2020.631278 ISSN=2234-943X