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