The official name of this Society is the “Société Internationale d'Oncologie Pédiatrique” with the acronym SIOP. It is also known by the English translation; namely, the International Society of Paediatric Oncology.
SIOP (Société Internationale d'Oncologie Pédiatrique) was established in the late 1960s. Under the name of International Society of Paediatric Oncology there exists an association governed by the present statutes and by the provisions of articles 60ff. of the Swiss Civil Code. Its registered office is in Zürich, Switzerland. The first annual general meeting was held in Madrid (Spain) in 1969 and was devoted to neuroblastoma, nephroblastoma, lymphosarcoma and immunology. Beginning with a few members in the late 1960s, the Society has now grown to ± 1,150 members living and working all over the world.
Each year the Society runs a scientific meeting on all aspects of paediatric oncology. Besides the annual meetings, SIOP sponsors regional and continental meetings to promote the exchange of information and good practice in paediatric oncology all over the world.
To keep in touch with all its members, the Society publishes a newsletter twice a year, has its Annual General Assembly once a year and has set up this web site of which parts are for members only.
From a few enthusiastic Founding members to more than 1,450 active members, SIOP remains a friendly Society in which all the challenges of treating patients with malignancies are discussed in depth.