What are Childhood Extracranial Germ Cell Tumors?
Germ cells are the reproductive cells that develop into testicles in boys and ovaries in girls. Sometimes, but rarely, these cells travel to other areas of the body and may develop into a rare type of cancer called germ cell tumor (this page covers germ cell tumors that occur extracranially – everywhere but in the brain). Most germ cell tumors are benign (noncancerous) and are very rare in children under age 15.