Luis González–Bayón MD, PhD., Professor of Surgical Pathology at the Faculty of Medicine of the Complutense University of Madrid, Spain (UCM). Head of the Peritoneal, Retroperitoneal, and Complex Pelvis Unit of the General Gregorio Marañón University Hospital (HGUGM). Graduated from medical school in 1982 and residency in General Surgery was completed in May 1990. Fellowship in Surgical Oncology at the Free University of Amsterdam, Netherlands, in 1992. Ph.D., UCM, March 2000. Associate Professor of Surgical Pathology, 2000. European Board of Surgery Qualification in Surgical Oncology obtained in Paris, France, in 2005. Head of the Surgical Oncology Research Group of the Gregorio Marañón Health Research Institute in 2005. Research interests: peritoneal malignant disease, hyperthermic intraperitoneal intraoperative chemotherapy, and intraoperative radiotherapy for local treatment of abdominal tumors. Member of the Spanish Society of Surgical Oncology (SEOQ), Spanish Association of Surgeons, and the European Society of Oncological Surgery (ESSO).