Are childhood extracranial germ cell tumors a common type of cancer?

About 16% of all teenagers who get any type of cancer between ages 15 and 19 will have extracranial germ cell tumors. This percentage drops to 7% if you consider all children under 20 and to 3.5% if you consider only children under 15. Rate of incidence for all children under 20 (ratio of people who get extracranial germ cell tumors to those who do not) is 10-12 children per 1,000,000.