The cancer treatment centre Gustave Roussy brings together all the skills required to develop integrated research on cancer- from basic research to technological work, from epidemiology to clinical research, and from sociology to psycho-oncology. GR has expertise in medical oncology, chemotherapy, radiotherapy, surgery, radiology and reconstructive surgery, and the largest departments for paediatric tumours and medical physics in France. The Department of Child and Adolescent Cancer focuses on the diagnosis and treatment of cancers and solid tumours in childhood and adolescence.