Cancers in children (0–14 years of age) differ from those occurring in adults in both their site of origin and their behaviour. Generally, tumours in children often grow rapidly and frequently spread to other parts of the body. Relative to adults, cancers in children include a higher proportion of blood and lymphatic malignancies, most commonly leukemia. Between 2006 and 2010, the most commonly diagnosed childhood cancer was leukemia, which accounted for 32% of all newly diagnosed cases, followed by cancers of the central nervous system (CNS) and lymphomas (19% and 11% respectively).
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Canadian Childhood Cancer Organizations