Cancer in children is different than adults:
https://www.cancer.org/cancer/cancer-in-children/differences-adults-children.html
The types of cancers that develop in children are often different from the types that develop in adults. Unlike many cancers in adults, childhood cancers are not strongly linked to lifestyle or environmental risk factors. Only a small number of childhood cancers are caused by DNA changes that are passed from parents to their child.
https://www.cancer.org/cancer/cancer-in-children/key-statistics.html#written_by
Childhood cancers make up less than 1% of all cancers diagnosed each year. About 10,590 children in the United States under the age of 15 will be diagnosed with cancer in 2018. Childhood cancer rates have been rising slightly for the past few decades
Keywords: Cytosine Methylation, Acute Myeloid Leukemia, 5-hydroxymethylcytosine, 
Types of Cancer in Children

https://en.wikipedia.org/wiki/Childhood_cancer

Two girls with acute lymphocytic leukemia demonstrating intravenous access for chemotherapy.