Unfortunately the pediatric population is susceptible to malignancies. The most common entities, in overall order of frequency, are :
- leukemia/lymphoma: ~35% *
- central nervous system malignancies: ~20%
- see brain tumors in infancy
- see brain tumors in childhood
- solid tumors
It is important to note that the incidence of various tumors varies with age, and thus the order above is not true throughout childhood .