The concept of a care unit responds to organizational and management criteria and must meet requirements related to the complexity and volume of care offered to ensure that the care provided is safe and efficient.

The cancer care unit for childhood and adolescence can therefore be defined as an organization of health professionals offering multidisciplinary care. This unit must meet functional, structural, and organizational requirements in a way that guarantees the safety conditions necessary to meet the health care needs of children and adolescents with cancer.