Childhood extracranial germ cell tumors usually do not come back after treatment.

Recurrent childhood extracranial germ cell tumor is cancer that has come back after it has been treated. The cancer may come back in the same place or in other parts of the body.

Most germ cell tumors do not recur (come back) after treatment. If they do recur, they usually come back within 3 years of surgery. About half of the teratomas that recur in the sacrum or coccyx are cancer, so follow-up is important.