RecruitingPhase 2Drug trialApatinib Combined with Temozolomide and Etoposide Capsules in the Treatment of Recurrent Medulloblastoma in ChildrenThis study is a prospective single-center clinical study, which aims to observe and evaluate the efficacy and safety of apatinib combined with temozolomide and oral etoposide in the treatment of recurrent medulloblastoma in children.