3-year progression-free survival rate 2 years follow-up after initiation of radiation therapy for the last patient enrolled [clinicaltrials_resource:69a48a2703bd7357ad6ffe0e0470ab16]

Evaluation will be in children and young adults with ependymoma treated with a second course of irradiation. Outcomes will be reported by p-values.

3-year progression-free survival rate 2 years follow-up after initiation of radiation therapy for the last patient enrolled [clinicaltrials_resource:69a48a2703bd7357ad6ffe0e0470ab16]

Evaluation will be in children and young adults with ependymoma treated with a second course of irradiation. Outcomes will be reported by p-values.