Childhood Cancer is the leading cause of death in children under 18 years of age. Cancer is actually a collection of diseases which affects the bones, muscle, blood, liver, kidney, brain, eyes etc. Children are diagnosed with many forms of cancer. Leukemia, brain tumors, solid tumors outside the CNS, lymphomas are some of the common childhood cancers. 1 in every 750 children alive today is a survivor of childhood cancer in France.