<unk>  is<unk>  in a child. In the United States, an arbitrarily adopted standard of the ages used are 0–14 years inclusive, that is, up to 14 years 11.9 months of age. However, the definition of<unk>  sometimes includes adolescents between 15 and 19 years old. Pediatric oncology is the branch of medicine<unk> ned with the diagnosis and treatment of<unk>  in children. Worldwide, it is estimated that<unk>  has an incidence of more than 175,000 per year, and a mortality rate of approximately 96,000 per year. In developed countries,<unk>  has a mortality of approximately 20% of cases. In low resource settings, on the other hand, mortality is approximately 80%, or even 90% in the world's poorest countries. In many developed countries the incidence is slowly increasing, as rates of<unk>  increased by 0.6% per year between 1975 and 2002 in the United States and by 1.1% per year between 1978 and 1997 in Europe. Unlike<unk> s in adults, which typically arise from years of DNA damage,<unk> s are caused by a misappropriation of normal developmental processes.
Childhood cancer
Childhood leukemia
Trauma in children
Childhood acquired brain injury
Undernutrition in children
Pediatric stroke
Learning problems in childhood cancer
Pediatric end-stage liver disease