Professor of oncology at the University of Toulouse Paul-Sabatier and head of the department of surgery at the Institut Claudius Regaud cancer center in Toulouse. Denis Querleu also acts as a visiting professor at McGill University, Montreal, Canada.
He has acted as the director of experimental research at the University of Lille, France. His expertise field is gynaecologic cancer surgery. He pioneered in the 90's the laparoscopic approach for cancer surgery.
He is the coordinator of a multidisciplinary team including clinicians and researchers, in collaboration with units at Cornell University and the Institute of Cellular Biology in Singapore that focuses on ovarian cancers, from natural history of tumor dissemination to advances in intraoperative diagnosis.